Annual Estimates of the Total Population for Counties

Source: U.S. Census Bureau
Units: Number of residents, as of July 1st each year unless otherwise noted
Additional data: Download all data for the current decade in Excel
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FipsAreaEstimates Base
(4/1/2010)		20162017
19000State of Iowa3,046,8693,130,8693,145,711
19001Adair County7,6827,0107,054
19003Adams County4,0293,7163,686
19005Allamakee County14,32813,86913,884
19007Appanoose County12,88712,49712,352
19009Audubon County6,1195,6355,578
19011Benton County26,07625,64125,642
19013Black Hawk County131,090132,813132,648
19015Boone County26,30626,41926,484
19017Bremer County24,27624,78424,911
19019Buchanan County20,95821,03421,202
19021Buena Vista County20,26020,26820,110
19023Butler County14,86714,68714,606
19025Calhoun County10,1779,7999,746
19027Carroll County20,81620,36620,320
19029Cass County13,95613,18013,145
19031Cedar County18,49518,40718,543
19033Cerro Gordo County44,15143,06443,006
19035Cherokee County12,07211,40411,316
19037Chickasaw County12,43912,06312,005
19039Clarke County9,2869,2869,374
19041Clay County16,66716,32516,170
19043Clayton County18,12917,64717,637
19045Clinton County49,11647,23647,010
19047Crawford County17,09617,03617,056
19049Dallas County66,13784,18587,235
19051Davis County8,7538,9018,966
19053Decatur County8,4578,0457,950
19055Delaware County17,76417,26917,153
19057Des Moines County40,32539,62539,417
19059Dickinson County16,66717,10417,199
19061Dubuque County93,65396,70497,041
19063Emmet County10,3029,5589,432
19065Fayette County20,88019,98619,796
19067Floyd County16,30315,83515,744
19069Franklin County10,68010,20010,164
19071Fremont County7,4416,9606,948
19073Greene County9,3379,0098,981
19075Grundy County12,45312,29712,333
19077Guthrie County10,95410,65010,670
19079Hamilton County15,67315,10015,115
19081Hancock County11,34110,89310,771
19083Hardin County17,53417,19317,048
19085Harrison County14,93714,07214,136
19087Henry County20,14519,80119,863
19089Howard County9,5669,2729,228
19091Humboldt County9,8149,5319,564
19093Ida County7,0896,9576,865
19095Iowa County16,35516,18416,103
19097Jackson County19,84819,39019,366
19099Jasper County36,84236,66136,966
19101Jefferson County16,84018,17218,422
19103Johnson County130,882146,633149,210
19105Jones County20,63620,38420,536
19107Keokuk County10,51110,17710,153
19109Kossuth County15,54315,13314,999
19111Lee County35,86234,45634,295
19113Linn County211,229221,900224,115
19115Louisa County11,38711,18811,184
19117Lucas County8,8988,5568,534
19119Lyon County11,58111,78811,792
19121Madison County15,67915,79416,013
19123Mahaska County22,38122,20622,235
19125Marion County33,30933,14933,105
19127Marshall County40,64840,16040,288
19129Mills County15,05915,04415,068
19131Mitchell County10,77210,65710,631
19133Monona County9,2428,7998,740
19135Monroe County7,9707,8537,845
19137Montgomery County10,74010,13410,137
19139Muscatine County42,74942,90442,880
19141O'Brien County14,39813,92113,801
19143Osceola County6,4626,0846,045
19145Page County15,94315,33515,224
19147Palo Alto County9,4219,0429,092
19149Plymouth County24,98125,20525,220
19151Pocahontas County7,3106,8486,846
19153Polk County430,635474,768481,830
19155Pottawattamie County93,14993,50893,386
19157Poweshiek County18,91418,29218,314
19159Ringgold County5,1314,9895,034
19161Sac County10,3509,8189,817
19163Scott County165,224172,045172,509
19165Shelby County12,16711,67211,628
19167Sioux County33,70434,89134,860
19169Story County89,54296,81697,502
19171Tama County17,76717,17917,058
19173Taylor County6,3176,2376,178
19175Union County12,53412,39012,450
19177Van Buren County7,5737,2557,157
19179Wapello County35,62535,27035,044
19181Warren County46,22849,34350,163
19183Washington County21,70422,10922,281
19185Wayne County6,4036,4376,476
19187Webster County38,01336,75236,605
19189Winnebago County10,86610,60110,587
19191Winneshiek County21,05820,40920,201
19193Woodbury County102,177102,707102,429
19195Worth County7,5987,4757,469
19197Wright County13,22912,81612,784

Notes:

  • The resident population includes all persons who are "usually resident" in a specified geographic area.  It excludes U.S. Armed Forces overseas and civilian U.S. citizens whose usual place of residence is outside the United States.
  • The April 1, 2010 estimates base may differ from the 2010 Census count due to legal boundary updates, Count Question Resolution actions or other changes.
  • The annual estimates are subject to backward revision with each new data release.
  • Last Census Bureau update:  March, 2018