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Iowa

State in USA

Contents: Subdivision

The population development in Iowa as well as related information and services (Wikipedia, Google, images).

The Details icon links to further information about a selected division including its population structure (gender, age groups, age distribution, »race«, ethnicity).

NameStatusPopulation
Census
1990-04-01
Population
Census
2000-04-01
Population
Census
2010-04-01
Population
Census
2020-04-01
Population
Estimate
2021-07-01
IowaState2,776,7552,926,3243,046,3553,190,3693,193,079
AdairCounty8,4098,2437,6827,4967,541
AdamsCounty4,8664,4824,0293,7043,641
AllamakeeCounty13,85514,67514,33014,06113,926
AppanooseCounty13,74313,72112,88712,31712,257
AudubonCounty7,3346,8306,1195,6745,635
BentonCounty22,42925,30826,07625,57525,691
Black HawkCounty123,798128,012131,090131,144130,368
BooneCounty25,18626,22426,30626,71526,723
BremerCounty22,81323,32524,27624,98825,081
BuchananCounty20,84421,09320,95820,56520,657
Buena VistaCounty19,96520,41120,26020,82320,771
ButlerCounty15,73115,30514,86714,33414,332
CalhounCounty11,50811,1159,6709,9279,915
CarrollCounty21,42321,42120,81620,76020,692
CassCounty15,12814,68413,95613,12713,050
CedarCounty17,38118,18718,49918,50518,410
Cerro GordoCounty46,73346,44744,15143,12742,706
CherokeeCounty14,09813,03512,07211,65811,503
ChickasawCounty13,29513,09512,43912,01211,887
ClarkeCounty8,2879,1339,2869,7489,785
ClayCounty17,58517,37216,66716,38416,440
ClaytonCounty19,05418,67818,12917,04316,998
ClintonCounty51,04050,14949,11646,46046,463
CrawfordCounty16,77516,94217,09616,52516,193
DallasCounty29,75540,75066,13599,678103,796
DavisCounty8,3128,5418,7539,1109,138
DecaturCounty8,3388,6898,4577,6457,659
DelawareCounty18,03518,40417,76417,48817,510
Des MoinesCounty42,61442,35140,32538,91038,491
DickinsonCounty14,90916,42416,66717,70317,851
DubuqueCounty86,40389,14393,65399,26698,718
EmmetCounty11,56911,02710,3029,3889,321
FayetteCounty21,84322,00820,88019,50919,258
FloydCounty17,05816,90016,30315,62715,413
FranklinCounty11,36410,70410,68010,0199,952
FremontCounty8,2268,0107,4416,6056,567
GreeneCounty10,04510,3669,3368,7718,717
GrundyCounty12,02912,36912,45312,32912,347
GuthrieCounty10,93511,35310,95410,62310,567
HamiltonCounty16,07116,43815,67315,03914,887
HancockCounty12,63812,10011,34110,79510,663
HardinCounty19,09418,81217,53416,87816,708
HarrisonCounty14,73015,66614,92814,58214,669
HenryCounty19,22620,33620,14520,48220,387
HowardCounty9,8099,9329,5669,4699,478
HumboldtCounty10,75610,3819,8159,5979,634
IdaCounty8,3657,8377,0897,0056,956
IowaCounty14,63015,67116,35516,66216,568
JacksonCounty19,95020,29619,84819,48519,368
JasperCounty34,79537,21336,84237,81337,764
JeffersonCounty16,31016,18116,84315,66315,647
JohnsonCounty96,119111,006130,882152,854154,748
JonesCounty19,44420,22120,63820,64620,805
KeokukCounty11,62411,40010,51110,0339,914
KossuthCounty18,59117,16315,54314,82814,529
LeeCounty38,68738,05235,86233,55533,215
LinnCounty168,767191,701211,226230,299228,939
LouisaCounty11,59212,18311,38710,83710,749
LucasCounty9,0709,4228,8988,6348,710
LyonCounty11,95211,76311,58111,93412,011
MadisonCounty12,48314,01915,67916,54816,773
MahaskaCounty21,52222,33522,38122,19021,984
MarionCounty30,00132,05233,30933,41433,380
MarshallCounty38,27639,31140,64840,10539,853
MillsCounty13,20214,54715,05914,48414,465
MitchellCounty10,92810,87410,77610,56510,555
MononaCounty10,03410,0209,2438,7518,574
MonroeCounty8,1148,0167,9707,5777,610
MontgomeryCounty12,07611,77110,74010,33010,322
MuscatineCounty39,90741,72242,74543,23542,688
O'BrienCounty15,44415,10214,39814,18214,015
OsceolaCounty7,2677,0036,4626,1926,159
PageCounty16,87016,97615,93215,21115,197
Palo AltoCounty10,66910,1479,4218,9968,906
PlymouthCounty23,38824,84924,98625,69825,650
PocahontasCounty9,5258,6627,3107,0787,074
PolkCounty327,140374,601430,640492,401496,844
PottawattamieCounty82,62887,70493,15893,66793,304
PoweshiekCounty19,03318,81518,91418,66218,586
RinggoldCounty5,4205,4695,1314,6634,639
SacCounty12,32411,52910,3509,8149,752
ScottCounty150,979158,668165,224174,669174,170
ShelbyCounty13,23013,17312,16711,74611,770
SiouxCounty29,90331,58933,70435,87235,893
StoryCounty74,25279,98189,54298,53799,472
TamaCounty17,41918,10317,76717,13516,867
TaylorCounty7,1146,9586,3175,8965,868
UnionCounty12,75012,30912,53412,13812,018
Van BurenCounty7,6767,8097,5707,2037,243
WapelloCounty35,68736,05135,62535,43735,256
WarrenCounty36,03340,67146,22552,40353,402
WashingtonCounty19,61220,67021,70422,56522,491
WayneCounty7,0676,7306,4036,4976,508
WebsterCounty40,34240,23538,01336,99937,147
WinnebagoCounty12,12211,72310,86610,67910,656
WinneshiekCounty20,84721,31021,05620,07019,892
WoodburyCounty98,276103,877102,172105,941105,607
WorthCounty7,9917,9097,5987,4437,385
WrightCounty14,26914,33413,22912,94312,785
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,449,281331,893,745

Source: U.S. Census Bureau (web).

Explanation: All population totals refer to 2020 boundaries. The 2021 gender and age figures are not fully based on results of the 2020 census.


Further information about the population structure:

Gender (E 2021)
Males1,601,384
Females1,591,695
Age Groups (E 2021)
0-17 years736,376
18-64 years1,891,430
65+ years565,273
Age Distribution (E 2021)
0-9 years391,835
10-19 years435,060
20-29 years427,298
30-39 years400,860
40-49 years373,675
50-59 years388,374
60-69 years396,321
70-79 years244,909
80+ years134,747
»Race« (C 2020)
White2,694,521
Black/African American131,972
Indigenous14,486
Asian75,629
Pacific Islander5,758
Some other88,720
2 or more179,283
Ethnicity (C 2020)
Hispanic or Latino215,986
Other2,974,383

See also:


USA: Counties