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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
IowaState2,776,7552,926,3243,046,3553,190,369
AdairCounty8,4098,2437,6827,496
AdamsCounty4,8664,4824,0293,704
AllamakeeCounty13,85514,67514,33014,061
AppanooseCounty13,74313,72112,88712,317
AudubonCounty7,3346,8306,1195,674
BentonCounty22,42925,30826,07625,575
Black HawkCounty123,798128,012131,090131,144
BooneCounty25,18626,22426,30626,715
BremerCounty22,81323,32524,27624,988
BuchananCounty20,84421,09320,95820,565
Buena VistaCounty19,96520,41120,26020,823
ButlerCounty15,73115,30514,86714,334
CalhounCounty11,50811,1159,6709,927
CarrollCounty21,42321,42120,81620,760
CassCounty15,12814,68413,95613,127
CedarCounty17,38118,18718,49918,505
Cerro GordoCounty46,73346,44744,15143,127
CherokeeCounty14,09813,03512,07211,658
ChickasawCounty13,29513,09512,43912,012
ClarkeCounty8,2879,1339,2869,748
ClayCounty17,58517,37216,66716,384
ClaytonCounty19,05418,67818,12917,043
ClintonCounty51,04050,14949,11646,460
CrawfordCounty16,77516,94217,09616,525
DallasCounty29,75540,75066,13599,678
DavisCounty8,3128,5418,7539,110
DecaturCounty8,3388,6898,4577,645
DelawareCounty18,03518,40417,76417,488
Des MoinesCounty42,61442,35140,32538,910
DickinsonCounty14,90916,42416,66717,703
DubuqueCounty86,40389,14393,65399,266
EmmetCounty11,56911,02710,3029,388
FayetteCounty21,84322,00820,88019,509
FloydCounty17,05816,90016,30315,627
FranklinCounty11,36410,70410,68010,019
FremontCounty8,2268,0107,4416,605
GreeneCounty10,04510,3669,3368,771
GrundyCounty12,02912,36912,45312,329
GuthrieCounty10,93511,35310,95410,623
HamiltonCounty16,07116,43815,67315,039
HancockCounty12,63812,10011,34110,795
HardinCounty19,09418,81217,53416,878
HarrisonCounty14,73015,66614,92814,582
HenryCounty19,22620,33620,14520,482
HowardCounty9,8099,9329,5669,469
HumboldtCounty10,75610,3819,8159,597
IdaCounty8,3657,8377,0897,005
IowaCounty14,63015,67116,35516,662
JacksonCounty19,95020,29619,84819,485
JasperCounty34,79537,21336,84237,813
JeffersonCounty16,31016,18116,84315,663
JohnsonCounty96,119111,006130,882152,854
JonesCounty19,44420,22120,63820,646
KeokukCounty11,62411,40010,51110,033
KossuthCounty18,59117,16315,54314,828
LeeCounty38,68738,05235,86233,555
LinnCounty168,767191,701211,226230,299
LouisaCounty11,59212,18311,38710,837
LucasCounty9,0709,4228,8988,634
LyonCounty11,95211,76311,58111,934
MadisonCounty12,48314,01915,67916,548
MahaskaCounty21,52222,33522,38122,190
MarionCounty30,00132,05233,30933,414
MarshallCounty38,27639,31140,64840,105
MillsCounty13,20214,54715,05914,484
MitchellCounty10,92810,87410,77610,565
MononaCounty10,03410,0209,2438,751
MonroeCounty8,1148,0167,9707,577
MontgomeryCounty12,07611,77110,74010,330
MuscatineCounty39,90741,72242,74543,235
O'BrienCounty15,44415,10214,39814,182
OsceolaCounty7,2677,0036,4626,192
PageCounty16,87016,97615,93215,211
Palo AltoCounty10,66910,1479,4218,996
PlymouthCounty23,38824,84924,98625,698
PocahontasCounty9,5258,6627,3107,078
PolkCounty327,140374,601430,640492,401
PottawattamieCounty82,62887,70493,15893,667
PoweshiekCounty19,03318,81518,91418,662
RinggoldCounty5,4205,4695,1314,663
SacCounty12,32411,52910,3509,814
ScottCounty150,979158,668165,224174,669
ShelbyCounty13,23013,17312,16711,746
SiouxCounty29,90331,58933,70435,872
StoryCounty74,25279,98189,54298,537
TamaCounty17,41918,10317,76717,135
TaylorCounty7,1146,9586,3175,896
UnionCounty12,75012,30912,53412,138
Van BurenCounty7,6767,8097,5707,203
WapelloCounty35,68736,05135,62535,437
WarrenCounty36,03340,67146,22552,403
WashingtonCounty19,61220,67021,70422,565
WayneCounty7,0676,7306,4036,497
WebsterCounty40,34240,23538,01336,999
WinnebagoCounty12,12211,72310,86610,679
WinneshiekCounty20,84721,31021,05620,070
WoodburyCounty98,276103,877102,172105,941
WorthCounty7,9917,9097,5987,443
WrightCounty14,26914,33413,22912,943
USA [United States of America]Federal Republic248,709,873281,421,906308,745,538331,449,281

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

Explanation: All population totals refer to 2020 boundaries.


Further information about the population structure:

Gender (E 2019)
Males1,571,075
Females1,583,995
Age Groups (E 2019)
0-14 years604,131
15-64 years1,997,985
65+ years552,954
Age Distribution (E 2019)
0-9 years395,792
10-19 years420,543
20-29 years430,266
30-39 years394,368
40-49 years361,158
50-59 years395,127
60-69 years381,748
70-79 years229,378
80+ years146,690
»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