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					Land Area (in square miles) and Population Density (persons per square mile) in Iowa's Counties: 1900 - 2000

                        2000                  1990                 1980                 1970                 1960                  1950                 1940                 1930                 1920                 1910                 1900
                Land     Population   Land     Population   Land    Population   Land    Population   Land    Population    Land    Population   Land    Population   Land    Population   Land    Population   Land    Population   Land    Population
County          Area      Density     Area      Density     Area     Density     Area     Density     Area     Density      Area     Density     Area     Density     Area     Density     Area     Density     Area     Density     Area     Density

Adair           569.3      14.5       569.3      14.8       569       16.7       569       16.7       569       19.1         569      21.6       569       23.2       573       24.2       573       24.9       573        25.2      576        28.1
Adams           423.5      10.6       423.6      11.5       425       13.5       426       14.8       426       17.5         426      20.5       426       23.8       427       24.4       427       24.6       427        25.8      432        31.5
Allamakee       639.6      22.9       639.6      21.7       633       23.9       636       23.5       639       25.0         639      25.6       639       26.9       639       25.6       639       27.1       639        27.1      615        30.4
Appanoose       496.2      27.6       496.3      27.7       498       31.2       523       28.7       523       30.6         523      37.6       523       46.4       513       48.4       513       59.5       513        55.9      500        51.9
Audubon         443.1      15.4       443.2      16.5       444       19.3       448       21.4       448       24.4         448      25.8       448       26.3       443       27.7       443       28.3       443        28.6      432        31.5
Benton          716.4      35.3       716.5      31.3       719       32.9       718       31.9       718       32.6         718      31.6       718       31.9       712       32.1       712       33.8       712        32.5      720        35.0
Black Hawk      567.1      225.7      567.4      218.2      573       240.9      568       234.0      567       216.0        567      177.2      567       141.0      565       122.4      565       100.1      565        79.4      576        56.2
Boone           571.4      45.9       571.5      44.1       573       45.7       573       46.2       573       48.9         573      49.1       573       52.0       569       51.4       569       52.5       569        48.6      576        49.0
Bremer          437.9      53.3       437.9      52.1       439       56.5       439       51.8       439       48.1         439      43.0       439       40.8       434       39.3       434       38.5       434        36.5      432        37.7
Buchanan        571.3      36.9       571.3      36.5       572       40.0       568       38.3       569       39.2         569      38.5       569       36.9       567       34.5       567       35.1       567        34.8      576        37.1
Buena Vista     574.8      35.5       574.8      34.7       575       36.1       572       36.2       573       37.0         573      36.8       573       34.6       571       32.7       571       32.5       571        28.0      576        29.4
Butler          580.4      26.4       580.4      27.1       582       30.4       582       29.1       582       30.0         582      29.9       582       30.9       577       30.5       577       30.9       577        39.7      576        31.1
Calhoun         570.1      19.5       570.2      20.2       571       23.7       571       25.0       572       27.8         572      29.6       572       30.7       568       31.0       568       31.3       568        30.1      576        32.2
Carroll         569.3      37.6       569.3      37.6       570       40.3       574       39.9       574       40.8         574      40.2       574       39.7       571       39.1       571       37.7       571        35.2      576        35.2
Cass            564.3      26.0       564.3      26.8       565       30.0       559       30.4       559       32.1         559      33.2       559       33.4       564       34.4       564       34.4       564        33.8      576        36.9
Cedar           579.5      31.4       579.6      30.0       582       32.0       585       30.2       585       30.4         585      28.9       585       28.9       570       29.4       570       30.8       570        31.2      576        33.6
Cerro Gordo     568.3      81.7       568.4      82.2       569       85.1       575       85.8       576       86.6         576      80.0       576       76.1       567       67.9       567       61.2       567        44.1      566        35.5
Cherokee        577.1      22.6       577.2      24.4       577       28.1       573       30.1       573       32.5         573      33.2       573       33.6       573       32.7       573       31.0       573        29.2      576        28.8
Chickasaw       504.6      25.9       504.7      26.3       505       30.6       505       29.6       505       29.8         505      30.2       505       30.2       497       29.5       497       31.0       497        30.9      485        35.1
Clarke          431.1      21.2       431.2      19.2       431       20.0       429       17.7       429       19.2         429      21.8       429       23.9       428       24.3       428       24.5       428        25.1      432        28.8
Clay            568.9      30.5       568.9      30.9       569       34.4       570       32.4       571       32.4         571      31.7       571       31.1       563       28.6       563       27.8       563        22.7      566        23.7
Clayton         778.8      24.0       778.8      24.5       778       27.1       779       26.5       778       28.2         778      28.9       778       31.3       762       32.2       762       32.9       762        33.6      745        37.2
Clinton          695       72.2       695.0      73.4       695       82.2       693       81.9       695       79.2         695      71.5       695       64.3       691       64.2       691       62.8       691        65.7      668        65.6
Crawford        714.4      23.7       714.4      23.5       714       26.5       716       26.2       716       25.9         716      27.6       716       28.7       715       29.4       715       28.8       715        28.0      720        30.1
Dallas          586.5      69.5       586.5      50.7       591       50.0       597       43.7       597       40.4         597      39.6       597       41.3       589       43.3       589       42.6       589        40.1      576        40.0
Davis           503.2      17.0       503.3      16.5       504       18.1       509       16.1       509       18.1         509      19.6       509       21.9       501       22.3       501       25.1       501        26.6      500        31.2
Decatur         531.8      16.3       532.3      15.7       535       18.3       530       18.4       530       19.9         530      23.8       530       26.4       533       28.0       533       31.1       533        30.7      534        34.0
Delaware        577.9      31.8       577.9      31.2       578       32.8       572       32.8       573       32.3         573      30.9       573       32.3       571       31.7       571       31.8       571        31.3      576        33.3
Des Moines      416.1      101.8      416.2      102.4      414       111.6      408       115.2      409       109.1        409      102.8      409       90.0       409       93.3       409       86.8       409        88.4      400        90.0
Dickinson       381.1      43.1       381.1      39.1       381       41.1       380       33.1       376       33.4         382      33.4       382       31.9       376       29.2       376       27.2       376        21.6      398        20.1
Dubuque         608.2      146.6      608.2      142.1      607       154.5      612       148.1      608       131.7        608      117.3      608       104.9      601       10.2       601       96.9       601        95.6      604        93.4
Emmet           395.7      27.9       395.8      29.2       394       33.9       394       35.6       395       37.6         395      35.7       395       33.9       393       32.7       393       32.1       393        25.0      398        25.0
Fayette         730.9      30.1       731.0      29.9       731       34.9       728       36.9       728       39.3         728      38.9       728       40.0       724       40.3       724       40.4       724        38.6      720        41.5
Floyd           500.6      33.8       500.6      34.1       502       39.1       503       39.5       503       42.0         503      42.8       503       40.1       495       39.4       495       38.1       495        34.6      494        35.9
Franklin        582.4      18.4       582.5      19.5       583       22.4       586       22.6       586       26.4         586      27.8       586       28.0       578       28.3       578       27.3       578        25.6      576        26.0
Fremont         511.1      15.7       511.3      16.1       515       18.3       524       17.7       523       19.7         523      23.6       512       28.6       507       30.6       507       30.5       507        30.8      487        38.1
Greene          568.4      18.2       568.4      17.7       571       21.2       569       22.3       569       25.3         569      27.3       569       29.2       574       28.8       574       28.7       574        27.9      570        31.3
Grundy          502.5      24.6       502.6      23.9       501       28.7       501       28.2       501       28.2         501      27.4       501       27.0       501       28.2       501       28.8       501        27.1      504        27.3
Guthrie         590.6      19.2       590.6      18.5       590       20.3       596       20.5       596       22.8         596      25.5       596       28.9       595       29.1       595       29.6       595        29.2      576        32.5
Hamilton        576.7      28.5       576.7      27.9       576       31.0       577       31.9       577       34.7         577      34.1       577       34.5       570       36.8       570       34.3       570        33.8      576        33.9
Hancock         571.1      21.2       571.1      22.1       571       24.2       570       23.2       570       25.6         570      26.5       570       27.0       570       26.0       570       25.8       570        22.3      566        24.3
Hardin          569.3      33.0       569.3      33.5       569       38.3       574       38.8       574       39.3         574      38.7       574       39.3       569       40.3       569       41.0       569        36.8      576        39.6
Harrison        696.7      22.5       696.9      21.1       698       23.4       696       23.3       695       25.3         695      28.1       693       32.9       691       36.0       691       35.4       691        33.5      684        37.4
Henry           434.4      46.8       434.5      44.2       436       43.3       440       41.2       440       41.3         440      42.5       440       40.9       427       41.4       427       42.9       427        43.7      432        46.3
Howard          473.4      21.0       473.4      20.7       473       23.5       471       24.3       471       27.0         471      27.8       471       28.7       468       28.0       468       29.3       468        27.6      460        31.5
Humboldt        434.4      23.9       434.4      24.8       437       28.1       435       28.8       435       30.2         435      30.2       435       30.9       431       30.6       431       30.0       431        28.3      432        29.3
Ida             431.7      18.2       431.7      19.4       432       20.6       431       21.3       431       23.8         431      24.8       431       25.6       430       27.8       430       27.2       430        26.2      432        28.5
Iowa            586.4      26.7       586.5      24.9       587       26.3       584       26.4       584       28.1         584      27.1       584       29.1       583       29.7       583       31.9       583        31.6      576        28.5
Jackson         636.1      31.9       636.1      31.4       638       35.3       644       32.4       644       32.2         644      28.9       644       29.8       632       29.2       632       31.5       632        33.6      619        38.1
Jasper           730       51.0       730.0      47.7       731       49.8       731       48.5       736       47.9         736      43.9       736       42.8       730       45.1       730       38.2       730        37.0      720        37.4
Jefferson       435.3      37.2       435.4      37.5       440       37.1       436       36.2       436       36.3         436      36.0       436       36.2       431       37.7       431       38.1       431        37.0      432        40.4
Johnson         614.5      180.7      614.5      156.4      614       133.1      619       116.5      617       87.0         620      73.8       620       53.5       610       49.6       610       43.4       610        42.5      614        40.4
Jones           575.3      35.1       575.4      33.8       576       35.4       585       34.0       585       35.4         585      33.2       585       34.1       569       33.8       569       32.7       569        33.5      576        38.1
Keokuk          579.2      19.7       579.2      20.1       580       22.3       579       24.1       579       26.8         579      29.0       579       31.8       578       33.1       578       36.3       578        36.6      576        43.4




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Land Area (in square miles) and Population Density (persons per square mile) in Iowa's Counties: 1900 - 2000

                            2000                       1990                      1980                      1970                       1960                     1950                 1940                 1930                 1920                 1910                 1900
                     Land    Population        Land     Population       Land     Population       Land     Population        Land     Population       Land    Population   Land    Population   Land    Population   Land    Population   Land    Population   Land    Population
County               Area     Density          Area      Density         Area      Density         Area      Density          Area      Density         Area     Density     Area     Density     Area     Density     Area     Density     Area     Density     Area     Density

Kossuth              973          17.6         973.1        19.1          974         22.5          979         23.4           979         25.9          979      26.8       979       27.2       973       26.2       973       25.8       973       22.6       964       23.6
Lee                 517.4         73.5         517.4        74.8          522         82.6          527         81.6           522         84.7          522      82.6       522       78.7       511       80.8       511       77.6       511       71.8       490       81.1
Linn                717.4         267.2        717.5        235.2         724         234.5         717         227.6          713         192.0         713      146.2      713       125.0      709       116.1      709       104.4      709       85.6       720       76.9
Louisa              401.9         30.3         401.9        28.8          402         30.0          403         26.5           403         25.5          403      27.5       403       28.2       396       29.2       396       30.8       396       32.5       396       34.1
Lucas               430.5         21.9         430.6        21.1          432         23.8          434         23.4           433         25.2          434      27.8       434       33.6       432       35.0       432       36.3       432       31.2       432       37.3
Lyon                587.5         20.0         587.6        20.3          588         21.9          588         22.7           588         24.6          588      25.0       588       26.1       582       26.3       582       26.5       582       25.1       555       23.7
Madison             561.1         25.0         561.2        22.2          563         22.4          564         20.5           565         21.8          565      23.2       565       25.7       563       25.5       563       26.7       563       27.7       576       30.7
Mahaska             570.9         39.1         570.9        37.7          571         40.0          572         38.8           572         41.3          572      43.1       572       46.3       568       45.4       568       46.3       568       52.6       576       59.5
Marion              554.2         57.8         554.3        54.1          560         53.0          498         52.9           568         45.6          568      45.7       568       47.6       563       45.7       563       44.3       563       40.8       576       41.9
Marshall            572.3         68.7         572.4        66.9          573         72.7          574         71.6           574         66.2          574      62.0       574       61.7       572       59.0       572       57.0       572       52.9       576       52.1
Mills               436.5         33.3         436.6        30.2          439         30.5          447         26.0           446         29.3          446      31.5       431       35.0       438       36.2       438       35.2       438       36.1       415       40.4
Mitchell            468.9         23.2         469.0        23.3          469         26.3          467         28.1           467         30.1          467      29.9       467       30.2       463       30.4       463       30.1       463       29.0       470       31.7
Monona              693.1         14.5         693.2        14.5          697         16.8          699         17.3           697         20.0          697      23.4       689       26.5       686       26.5       686       25.0       686       24.2       684       26.3
Monroe              433.4         18.5         433.4        18.7          434         21.2          435         21.5           435         24.1          435      27.2       435       33.5       432       34.7       432       54.3       432       58.9       432       41.6
Montgomery          423.9         27.8         423.9        28.5          424         31.6          422         30.3           422         34.3          422      37.2       422       37.2       424       39.5       424       40.2       424       39.2       432       41.2
Muscatine           438.7         95.1         438.7        91.0          442         91.6          443         83.9           439         77.1          439      73.2       439       71.3       432       68.0       432       67.2       432       68.3       420       67.2
O'Brien             573.1         26.4         573.1        26.9          573         29.6          575         30.5           575         32.8          575      33.0       575       33.6       569       32.4       569       33.5       569       30.3       566       30.0
Osceola             398.8         17.6         398.8        18.2          398         21.0          398         21.5           397         25.4          398      25.6       398       26.7       395       25.8       395       25.9       395       22.7       398       21.9
Page                534.8         31.7         534.9        31.5          535         35.6          535         34.6           535         39.3          535      44.7       535       46.5       531       48.8       531       45.5       531       45.2       528       45.8
Palo Alto           563.8         18.0         563.9        18.9          562         22.6          561         23.7           561         26.3          561      28.3       561       28.8       561       27.4       561       27.6       561       24.7       566       25.4
Plymouth            863.6         28.8         863.6        27.1          864         28.6          863         28.2           863         27.7          863      26.9       863       27.2       856       28.2       856       27.6       856       27.0       840       26.4
Pocahontas          577.7         15.0         577.7        16.5          577         19.7          581         21.9           580         24.5          580      26.7       580       28.0       576       27.2       576       27.1       576       25.7       576       26.6
Polk                569.3         657.9        569.5        574.4         582         521.0         578         495.0          594         448.3         594      380.5      594       329.7      582       297.0      582       264.7      582       189.8      576       143.4
Pottawattamie       954.3         91.9         954.3        86.6          953         90.8          963         90.3           964         86.2          964      72.3       946       70.6       942       74.2       942       65.3       942       59.3       926       58.7
Poweshiek            585          32.2         585.1        32.5          585         33.0          589         31.9           589         32.8          589      32.8       589       31.8       580       32.3       580       34.3       580       33.8       576       33.7
Ringgold            537.7         10.2         537.7        10.1          536         11.4          538         11.8           538         14.7          538      17.7       538       20.7       540       22.2       540       23.9       540       23.9       545       28.1
Sac                 575.8         20.0         575.8        21.4          576         24.5          578         26.9           578         29.4          578      30.3       578       30.5       574       30.7       574       30.5       574       28.8       576       30.6
Scott               457.9         346.5        457.9        329.7         459         348.6         454         314.3          453         262.8         453      222.3      453       187.1      449       172.2      449       164.7      449       133.6      432       119.3
Shelby              590.8         22.3         590.9        22.4          591         25.5          587         26.5           587         27.0          587      27.2       587       28.5       589       29.1       589       27.3       589       28.1       576       31.1
Sioux               767.9         41.1         767.9        38.9          769         40.1          766         36.5           766         34.4          766      34.4       766       35.5       760       35.3       760       34.8       760       33.2       738       31.6
Story               572.9         139.6        572.9        129.6         574         126.1         568         110.5          568         86.8          568      78.0       568       58.9       567       54.9       567       46.2       567       42.5       576       40.2
Tama                721.3         25.1         721.4        24.1          722         27.1          720         28.0           720         29.7          720      30.1       720       31.2       720       30.5       720       30.4       720       30.8       720       34.1
Taylor               534          13.0         534.0        13.3          537         15.6          528         16.6           528         19.5          528      23.5       528       27.0       534       27.8       534       29.1       534       30.5       540       34.8
Union               424.4         29.0         424.4        30.0          426         32.5          425         31.9           426         32.2          426      36.7       426       38.2       427       40.8       427       40.4       427       38.9       432       46.1
Van Buren           484.8         16.1         485.3        15.8          484         17.8          487         17.7           487         20.1          487      22.6       487       24.7       477       26.4       477       29.5       477       31.5       502       34.6
Wapello             431.8         83.5         431.8        82.6          434         92.7          437         96.5           437         105.6         437      108.5      437       101.3      428       94.6       428       88.6       428       88.2       432       82.0
Warren              571.6         71.1         571.7        63.0          573         60.9          558         49.2           572         36.4          572      31.0       572       30.9       570       31.1       570       31.7       570       31.9       576       35.4
Washington          568.7         36.3         568.8        34.5          570         35.3          568         33.4           568         34.2          568      34.4       568       35.3       559       35.5       559       36.5       559       35.6       576       36.0
Wayne               525.6         12.8         525.6        13.4          527         15.6          532         15.8           532         18.4          532      22.1       532       25.0       524       26.3       524       29.3       524       30.9       528       33.1
Webster             715.2         56.3         715.3        56.4          718         64.0          718         67.4           718         66.6          718      61.6       718       57.8       714       56.6       714       52.7       714       48.5       720       44.1
Winnebago           400.5         29.3         400.5        30.3          401         32.5          401         32.4           401         32.7          402      33.5       402       34.8       399       32.9       399       33.8       399       29.9       398       32.0
Winneshiek          689.6         30.9         689.7        30.2          690         31.7          688         31.6           688         31.5          688      31.5       688       32.4       686       31.5       686       32.2       686       31.7       671       35.4
Woodbury            872.6         119.0        872.7        112.6         873         115.5         871         118.3          871         123.8         871      119.3      866       119.7      864       117.7      864       106.7      864       78.3       864       63.2
Worth                400          19.8         400.0        20.0          401         22.6          400         22.4           400         25.6          401      27.6       401       28.6       399       28.0       399       29.1       399       24.9       398       27.4
Wright              580.7         24.7         580.8        24.6          578         28.2          577         30.0           577         33.7          577      34.1       577       34.7       575       35.2       575       35.4       575       31.2       576       31.6

Source: U.S. Bureau of the Census, Decennial Census
Prepared By: State Library of Iowa, State Data Center Program, 800-248-4483, http://www.silo.lib.ia.us/specialized-services/datacenter/index.html




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