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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
2023-07-01
IowaState2,776,7552,926,3243,046,3553,190,4273,207,004
AdairCounty8,4098,2437,6827,4977,389
AdamsCounty4,8664,4824,0293,7073,544
AllamakeeCounty13,85514,67514,33014,06414,074
AppanooseCounty13,74313,72112,88712,31612,119
AudubonCounty7,3346,8306,1195,6765,534
BentonCounty22,42925,30826,07625,58425,796
Black HawkCounty123,798128,012131,090131,143130,471
BooneCounty25,18626,22426,30626,70926,590
BremerCounty22,81323,32524,27624,99025,307
BuchananCounty20,84421,09320,95820,56220,691
Buena VistaCounty19,96520,41120,26020,82520,567
ButlerCounty15,73115,30514,86714,33514,172
CalhounCounty11,50811,1159,6709,9319,763
CarrollCounty21,42321,42120,81620,75920,522
CassCounty15,12814,68413,95613,13413,130
CedarCounty17,38118,18718,49918,50018,302
Cerro GordoCounty46,73346,44744,15143,12942,406
CherokeeCounty14,09813,03512,07211,65711,605
ChickasawCounty13,29513,09512,43912,01111,658
ClarkeCounty8,2879,1339,2869,7549,588
ClayCounty17,58517,37216,66716,38016,511
ClaytonCounty19,05418,67818,12917,04716,969
ClintonCounty51,04050,14949,11646,45946,158
CrawfordCounty16,77516,94217,09616,51916,013
DallasCounty29,75540,75066,13599,732111,092
DavisCounty8,3128,5418,7539,1099,169
DecaturCounty8,3388,6898,4577,6407,665
DelawareCounty18,03518,40417,76417,48417,600
Des MoinesCounty42,61442,35140,32538,91038,253
DickinsonCounty14,90916,42416,66717,70318,056
DubuqueCounty86,40389,14393,65399,27598,887
EmmetCounty11,56911,02710,3029,3939,229
FayetteCounty21,84322,00820,88019,51019,210
FloydCounty17,05816,90016,30315,63815,326
FranklinCounty11,36410,70410,68010,0199,875
FremontCounty8,2268,0107,4416,6006,458
GreeneCounty10,04510,3669,3368,7648,584
GrundyCounty12,02912,36912,45312,32612,384
GuthrieCounty10,93511,35310,95410,62110,722
HamiltonCounty16,07116,43815,67315,03714,729
HancockCounty12,63812,10011,34110,78910,615
HardinCounty19,09418,81217,53416,87916,463
HarrisonCounty14,73015,66614,92814,58214,670
HenryCounty19,22620,33620,14520,48219,547
HowardCounty9,8099,9329,5669,4659,376
HumboldtCounty10,75610,3819,8159,5999,500
IdaCounty8,3657,8377,0897,0036,833
IowaCounty14,63015,67116,35516,66516,381
JacksonCounty19,95020,29619,84819,48519,342
JasperCounty34,79537,21336,84237,80537,919
JeffersonCounty16,31016,18116,84315,66515,440
JohnsonCounty96,119111,006130,882152,862157,528
JonesCounty19,44420,22120,63820,64420,900
KeokukCounty11,62411,40010,51110,0269,914
KossuthCounty18,59117,16315,54314,82614,396
LeeCounty38,68738,05235,86233,55932,565
LinnCounty168,767191,701211,226230,296228,972
LouisaCounty11,59212,18311,38710,83010,513
LucasCounty9,0709,4228,8988,6338,747
LyonCounty11,95211,76311,58111,93612,324
MadisonCounty12,48314,01915,67916,54616,971
MahaskaCounty21,52222,33522,38122,19021,874
MarionCounty30,00132,05233,30933,41833,770
MarshallCounty38,27639,31140,64840,10640,014
MillsCounty13,20214,54715,05914,48314,633
MitchellCounty10,92810,87410,77610,57010,518
MononaCounty10,03410,0209,2438,7538,493
MonroeCounty8,1148,0167,9707,5707,504
MontgomeryCounty12,07611,77110,74010,32910,139
MuscatineCounty39,90741,72242,74543,24042,218
O'BrienCounty15,44415,10214,39814,18114,012
OsceolaCounty7,2677,0036,4626,1915,978
PageCounty16,87016,97615,93215,20715,014
Palo AltoCounty10,66910,1479,4218,9948,810
PlymouthCounty23,38824,84924,98625,69925,722
PocahontasCounty9,5258,6627,3107,0756,976
PolkCounty327,140374,601430,640492,410505,255
PottawattamieCounty82,62887,70493,15893,66693,179
PoweshiekCounty19,03318,81518,91418,65918,453
RinggoldCounty5,4205,4695,1314,6604,642
SacCounty12,32411,52910,3509,8229,686
ScottCounty150,979158,668165,224174,671174,270
ShelbyCounty13,23013,17312,16711,76011,806
SiouxCounty29,90331,58933,70435,86336,246
StoryCounty74,25279,98189,54298,53398,566
TamaCounty17,41918,10317,76717,13316,833
TaylorCounty7,1146,9586,3175,8935,924
UnionCounty12,75012,30912,53412,14211,906
Van BurenCounty7,6767,8097,5707,2067,266
WapelloCounty35,68736,05135,62535,43635,166
WarrenCounty36,03340,67146,22552,39855,205
WashingtonCounty19,61220,67021,70422,56622,560
WayneCounty7,0676,7306,4036,5026,557
WebsterCounty40,34240,23538,01337,00236,485
WinnebagoCounty12,12211,72310,86610,68310,571
WinneshiekCounty20,84721,31021,05620,06419,815
WoodburyCounty98,276103,877102,172105,939105,951
WorthCounty7,9917,9097,5987,4457,297
WrightCounty14,26914,33413,22912,94212,656
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,464,948334,914,895

Source: U.S. Census Bureau.

Explanation: Latest available rebased total population figures are tabulated.


Further information about the population structure:

Gender (C 2020)
Males1,586,092
Females1,604,277
Age Groups (C 2020)
0-17 years740,266
18-64 years1,875,650
65+ years574,453
Age Distribution (C 2020)
80+ years146,128
70-79 years242,360
60-69 years396,700
50-59 years393,425
40-49 years361,951
30-39 years402,483
20-29 years414,206
10-19 years437,185
0-9 years395,931
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:


USA: Counties