Population in Selected Age Groups

Source: Population Estimates Program, U.S. Census Bureau
Units: Number of residents by age in years, as of July 1, 2016
Additional data: Download more detailed age group estimates in Excel
  Download population counts by 5-year age group and sex from the 2010 Census
FIPSArea NameTotal,
all ages
Under 5
years
5 to 13
years
14 to 17
years
18 to 24
years
25 to 44
years
45 to 64
years
65 years
or older
19000State of Iowa3,134,693199,415367,581163,735322,097761,908805,742514,215
19001Adair7,0923647793704521,4792,0301,618
19003Adams3,6932453981662377661,070811
19005Allamakee13,8848851,5976599852,7543,8983,106
19007Appanoose12,4627461,3976248682,6183,4812,728
19009Audubon5,6783025742604231,0451,6721,402
19011Benton25,6991,4923,1151,4541,9715,6487,4684,551
19013Black Hawk132,9048,58714,1585,93220,60731,78831,16920,663
19015Boone26,5321,4602,8621,5051,9876,4837,5914,644
19017Bremer24,7981,4202,8091,2472,9595,4876,1224,754
19019Buchanan20,9921,4582,7821,3141,5094,8625,4773,590
19021Buena Vista20,3321,5712,5391,0472,4694,6304,9553,121
19023Butler14,7918021,8167789663,2013,9713,257
19025Calhoun9,8466071,0284587912,0812,6782,203
19027Carroll20,4371,3722,4851,0841,6054,2905,5814,020
19029Cass13,1577451,5866759062,7973,5652,883
19031Cedar18,4549462,1551,0421,3044,1675,3553,485
19033Cerro Gordo43,0702,4154,5442,0283,4449,51912,2288,892
19035Cherokee11,5086741,1875407592,3003,3002,748
19037Chickasaw12,0237141,4536669062,4623,4422,380
19039Clarke9,3096591,1984966842,0872,4451,740
19041Clay16,3331,0271,8558301,2223,7334,4173,249
19043Clayton17,5909981,9379071,2253,4475,2173,859
19045Clinton47,3092,8345,4452,5753,69710,39513,3569,007
19047Crawford16,9401,1842,1359741,5803,8794,2972,891
19049Dallas84,5166,81512,1104,8785,72725,55719,41710,012
19051Davis8,8607451,2765357011,9042,1621,537
19053Decatur8,1414978863871,4541,4891,8901,538
19055Delaware17,3271,0802,0879511,3533,5205,0853,251
19057Des Moines39,7392,3874,5832,0312,9399,15910,7387,902
19059Dickinson17,2438601,6737991,0893,5444,9694,309
19061Dubuque97,0036,13511,0595,1019,89922,85725,50116,451
19063Emmet9,6585321,0125388402,1042,6052,027
19065Fayette20,0541,0552,1749751,9964,0815,5724,201
19067Floyd15,8739361,8198911,2463,3064,2693,406
19069Franklin10,1705791,2235487662,1032,8632,088
19071Fremont6,9503688073614871,4042,0141,509
19073Greene9,0115121,0255216511,8022,5541,946
19075Grundy12,3136691,5047128312,7563,3282,513
19077Guthrie10,6255981,2115987432,1033,0712,301
19079Hamilton15,0769531,7647771,0643,3234,1813,014
19081Hancock10,8355761,2476047982,2583,0732,279
19083Hardin17,2269141,6829751,5163,6814,7983,660
19085Harrison14,1498111,6207891,0153,0014,0842,829
19087Henry19,7731,1142,1841,0371,8144,6405,2493,735
19089Howard9,3326131,2054936371,9842,4921,908
19091Humboldt9,4875531,1644726602,0412,6421,955
19093Ida6,9853918903625111,4351,8401,556
19095Iowa16,3119951,9198451,2323,5354,7273,058
19097Jackson19,4721,0842,1571,0651,4763,9515,7453,994
19099Jasper36,7082,1474,0881,9392,7258,74710,2696,793
19101Jefferson18,0907751,4266852,3594,4204,7143,711
19103Johnson146,5478,86814,5556,09131,02340,35229,84715,811
19105Jones20,4391,1002,3261,0381,4414,7675,8153,952
19107Keokuk10,1196361,1425647422,1232,8382,074
19109Kossuth15,1148541,7057711,1622,9484,2473,427
19111Lee34,6152,0883,5861,7022,6817,8839,8726,803
19113Linn221,66114,38026,07212,16120,43058,42257,11733,079
19115Louisa11,1427011,2306259122,6123,1591,903
19117Lucas8,6474839944926701,6812,4741,853
19119Lyon11,7548471,7607268602,6722,8522,037
19121Madison15,8489262,0909861,1033,5354,5372,671
19123Mahaska22,1811,4312,6701,2352,0605,1385,7773,870
19125Marion33,1891,9604,1311,9043,5507,3138,6345,697
19127Marshall40,3122,7645,2092,1633,4779,02010,3787,301
19129Mills14,9728761,8238761,0873,2334,5542,523
19131Mitchell10,7636471,2926398042,1182,9292,334
19133Monona8,8984599564696771,6782,4282,231
19135Monroe7,8704369954155941,6922,1991,539
19137Montgomery10,2256031,1235727512,0492,9352,192
19139Muscatine42,9402,8275,5572,5313,57110,35211,2476,855
19141O'Brien14,0208391,6967621,0572,9923,7852,889
19143Osceola6,0643977372944251,2131,7461,252
19145Page15,3918081,4568111,1953,6514,2113,259
19147Palo Alto9,0475301,0814567381,9442,3321,966
19149Plymouth25,2001,6243,2031,4272,0205,4736,8724,581
19151Pocahontas6,8863918013744831,2761,9821,579
19153Polk474,04534,86159,67724,91441,546137,603117,13458,310
19155Pottawattamie93,5825,93311,2204,9968,22122,60525,32815,279
19157Poweshiek18,5339211,9178942,6853,6264,7523,738
19159Ringgold5,0682766113093319951,2911,255
19161Sac9,8765981,1374816721,8982,8502,240
19163Scott172,47411,32120,9239,10814,52544,99245,38926,216
19165Shelby11,8006451,3486468762,1693,4762,640
19167Sioux34,8982,5484,8812,0284,7617,6257,7925,263
19169Story97,0904,4498,0963,69930,84121,72417,46010,821
19171Tama17,3191,1242,0411,0071,3353,5404,8713,401
19173Taylor6,2164117263254451,3551,6221,332
19175Union12,4206761,4776401,1412,7643,2472,475
19177Van Buren7,2714428374084861,4852,0841,529
19179Wapello34,9822,1254,0141,7133,2268,5319,3726,001
19181Warren49,6913,0246,3323,0244,74111,75713,0657,748
19183Washington22,2811,6022,6971,2901,6624,9115,9014,218
19185Wayne6,4524338283624741,3101,6631,382
19187Webster36,7692,1573,8931,8504,2778,3659,6996,528
19189Winnebago10,6316151,1785411,0312,1842,8852,197
19191Winneshiek20,5618731,9929043,4093,8925,5513,940
19193Woodbury102,7797,53113,6225,89210,29825,63325,22414,579
19195Worth7,5724077813836361,5902,2351,540
19197Wright12,7797671,5347378802,5943,4472,820

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.
  • Last Census Bureau update:  June, 2017