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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, urbanization, »race«, ethnicity).

NameStatusPopulation
Census
1990-04-01		Population
Census
2000-04-01		Population
Census
2010-04-01		Population
Census
2020-04-01		Population
Estimate
2025-07-01
IowaState2,776,7552,926,3243,046,3553,190,5823,238,387
AdairCounty8,4098,2437,6827,5027,403
AdamsCounty4,8664,4824,0293,7083,617
AllamakeeCounty13,85514,67514,33014,06214,238
AppanooseCounty13,74313,72112,88712,31212,077
AudubonCounty7,3346,8306,1195,6745,509
BentonCounty22,42925,30826,07625,58626,004
Black HawkCounty123,798128,012131,090131,146131,532
BooneCounty25,18626,22426,30626,71526,799
BremerCounty22,81323,32524,27624,99225,296
BuchananCounty20,84421,09320,95820,56220,883
Buena VistaCounty19,96520,41120,26020,82020,449
ButlerCounty15,73115,30514,86714,33814,049
CalhounCounty11,50811,1159,6709,9279,562
CarrollCounty21,42321,42120,81620,75820,303
CassCounty15,12814,68413,95613,12912,960
CedarCounty17,38118,18718,49918,49018,359
Cerro GordoCounty46,73346,44744,15143,12342,372
CherokeeCounty14,09813,03512,07211,65011,369
ChickasawCounty13,29513,09512,43912,01811,663
ClarkeCounty8,2879,1339,2869,7489,574
ClayCounty17,58517,37216,66716,38516,202
ClaytonCounty19,05418,67818,12917,04016,845
ClintonCounty51,04050,14949,11646,46546,002
CrawfordCounty16,77516,94217,09616,52416,237
DallasCounty29,75540,75066,13599,721118,457
DavisCounty8,3128,5418,7539,1139,230
DecaturCounty8,3388,6898,4577,7627,655
DelawareCounty18,03518,40417,76417,48117,674
Des MoinesCounty42,61442,35140,32538,93538,077
DickinsonCounty14,90916,42416,66717,71018,077
DubuqueCounty86,40389,14393,65399,28099,381
EmmetCounty11,56911,02710,3029,3879,107
FayetteCounty21,84322,00820,88019,51219,047
FloydCounty17,05816,90016,30315,62914,901
FranklinCounty11,36410,70410,68010,0099,868
FremontCounty8,2268,0107,4416,6096,522
GreeneCounty10,04510,3669,3368,7608,658
GrundyCounty12,02912,36912,45312,33112,361
GuthrieCounty10,93511,35310,95410,62410,782
HamiltonCounty16,07116,43815,67315,04014,944
HancockCounty12,63812,10011,34110,79910,528
HardinCounty19,09418,81217,53416,88016,455
HarrisonCounty14,73015,66614,92814,57214,623
HenryCounty19,22620,33620,14520,48219,349
HowardCounty9,8099,9329,5669,4709,415
HumboldtCounty10,75610,3819,8159,5999,409
IdaCounty8,3657,8377,0897,0036,777
IowaCounty14,63015,67116,35516,66916,504
JacksonCounty19,95020,29619,84819,47719,288
JasperCounty34,79537,21336,84237,81638,153
JeffersonCounty16,31016,18116,84315,66215,291
JohnsonCounty96,119111,006130,882152,864160,044
JonesCounty19,44420,22120,63820,64821,253
KeokukCounty11,62411,40010,51110,0239,797
KossuthCounty18,59117,16315,54314,82214,322
LeeCounty38,68738,05235,86233,55232,306
LinnCounty168,767191,701211,226230,291232,028
LouisaCounty11,59212,18311,38710,83810,416
LucasCounty9,0709,4228,8988,6348,847
LyonCounty11,95211,76311,58111,93212,354
MadisonCounty12,48314,01915,67916,54717,270
MahaskaCounty21,52222,33522,38122,18221,880
MarionCounty30,00132,05233,30933,42234,192
MarshallCounty38,27639,31140,64840,10739,890
MillsCounty13,20214,54715,05914,50014,793
MitchellCounty10,92810,87410,77610,56410,650
MononaCounty10,03410,0209,2438,7568,539
MonroeCounty8,1148,0167,9707,5777,406
MontgomeryCounty12,07611,77110,74010,33210,002
MuscatineCounty39,90741,72242,74543,24641,853
O'BrienCounty15,44415,10214,39814,18714,220
OsceolaCounty7,2677,0036,4626,1945,980
PageCounty16,87016,97615,93215,21414,856
Palo AltoCounty10,66910,1479,4218,9988,899
PlymouthCounty23,38824,84924,98625,70325,697
PocahontasCounty9,5258,6627,3107,0816,819
PolkCounty327,140374,601430,640492,389516,546
PottawattamieCounty82,62887,70493,15893,65992,996
PoweshiekCounty19,03318,81518,91418,66418,368
RinggoldCounty5,4205,4695,1314,6614,642
SacCounty12,32411,52910,3509,8149,525
ScottCounty150,979158,668165,224174,667175,259
ShelbyCounty13,23013,17312,16711,74211,689
SiouxCounty29,90331,58933,70435,86936,774
StoryCounty74,25279,98189,54298,541101,291
TamaCounty17,41918,10317,76717,10216,796
TaylorCounty7,1146,9586,3175,8935,835
UnionCounty12,75012,30912,53412,14211,829
Van BurenCounty7,6767,8097,5707,2067,131
WapelloCounty35,68736,05135,62535,44235,210
WarrenCounty36,03340,67146,22552,40157,331
WashingtonCounty19,61220,67021,70422,56122,667
WayneCounty7,0676,7306,4036,4986,738
WebsterCounty40,34240,23538,01337,00236,838
WinnebagoCounty12,12211,72310,86610,67410,251
WinneshiekCounty20,84721,31021,05620,06519,733
WoodburyCounty98,276103,877102,172105,981106,649
WorthCounty7,9917,9097,5987,4467,338
WrightCounty14,26914,33413,22912,94312,801
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,516,113341,784,857

Source: U.S. Census Bureau.

Explanation: Latest available rebased total population figures are tabulated.

Further information about the population structure:

Gender (E 2024)
Males1,627,465
Females1,614,023
Age Groups (E 2024)
0-17 years730,575
18-64 years1,898,534
65+ years612,379
Age Distribution (E 2024)
80+ years144,926
70-79 years274,766
60-69 years398,176
50-59 years362,609
40-49 years394,862
30-39 years405,989
20-29 years434,495
10-19 years436,999
0-9 years388,666
Urbanization (C 2020)
Rural1,175,538
Urban2,014,831
»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: