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QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.
Chart
Population estimates, July 1, 2024, (V2024)
0
52,000
104,000
156,000
208,000
260,000
312,000
364,000
416,000
468,000
520,000
Polk County, Iowa
516,185
Linn County, Iowa
231,762
Scott County, Iowa
175,601
Johnson County, Iowa
160,080
Black Hawk County, Iowa
132,348
Dallas County, Iowa
115,343
Woodbury County, Iowa
107,257
Story County, Iowa
102,498
Dubuque County, Iowa
99,242
Pottawattamie County, Iowa
93,529
Warren County, Iowa
56,343
Clinton County, Iowa
46,015
Cerro Gordo County, Iowa
42,493
Muscatine County, Iowa
42,132
Marshall County, Iowa
40,392
Des Moines County, Iowa
38,411
Jasper County, Iowa
38,107
Webster County, Iowa
36,909
Sioux County, Iowa
36,554
Wapello County, Iowa
35,681
Marion County, Iowa
34,048
Lee County, Iowa
32,376
Boone County, Iowa
26,729
Plymouth County, Iowa
25,825
Benton County, Iowa
25,799
Bremer County, Iowa
25,328
Washington County, Iowa
22,631
Mahaska County, Iowa
22,034
Jones County, Iowa
21,116
Buena Vista County, Iowa
20,816
Buchanan County, Iowa
20,733
Carroll County, Iowa
20,407
Winneshiek County, Iowa
19,723
Jackson County, Iowa
19,390
Henry County, Iowa
19,361
Fayette County, Iowa
19,152
Poweshiek County, Iowa
18,454
Cedar County, Iowa
18,231
Dickinson County, Iowa
18,158
Delaware County, Iowa
17,609
Madison County, Iowa
17,161
Clayton County, Iowa
16,931
Tama County, Iowa
16,738
Clay County, Iowa
16,474
Hardin County, Iowa
16,464
Iowa County, Iowa
16,423
Crawford County, Iowa
16,378
Jefferson County, Iowa
15,781
Page County, Iowa
15,038
Floyd County, Iowa
15,008
Hamilton County, Iowa
14,856
Mills County, Iowa
14,717
Harrison County, Iowa
14,626
Kossuth County, Iowa
14,408
O'Brien County, Iowa
14,260
Allamakee County, Iowa
14,184
Butler County, Iowa
14,156
Cass County, Iowa
13,024
Wright County, Iowa
12,729
Grundy County, Iowa
12,405
Lyon County, Iowa
12,378
Appanoose County, Iowa
12,106
Union County, Iowa
11,955
Shelby County, Iowa
11,821
Chickasaw County, Iowa
11,719
Cherokee County, Iowa
11,658
Guthrie County, Iowa
10,774
Mitchell County, Iowa
10,632
Louisa County, Iowa
10,630
Hancock County, Iowa
10,616
Winnebago County, Iowa
10,383
Montgomery County, Iowa
10,063
Franklin County, Iowa
10,024
Keokuk County, Iowa
9,855
Calhoun County, Iowa
9,711
Humboldt County, Iowa
9,617
Sac County, Iowa
9,533
Clarke County, Iowa
9,524
Howard County, Iowa
9,360
Davis County, Iowa
9,193
Emmet County, Iowa
9,162
Palo Alto County, Iowa
8,809
Lucas County, Iowa
8,758
Greene County, Iowa
8,662
Monona County, Iowa
8,429
Decatur County, Iowa
7,656
Adair County, Iowa
7,431
Monroe County, Iowa
7,373
Worth County, Iowa
7,307
Van Buren County, Iowa
7,217
Pocahontas County, Iowa
7,006
Ida County, Iowa
6,810
Wayne County, Iowa
6,622
Fremont County, Iowa
6,494
Osceola County, Iowa
6,036
Taylor County, Iowa
5,825
Audubon County, Iowa
5,562
Ringgold County, Iowa
4,608
Adams County, Iowa
3,606
0
52,000
104,000
156,000
208,000
260,000
312,000
364,000
416,000
468,000
520,000
Value Notes
Methodology differences may exist between data sources, and so estimates from different sources are not comparable.
Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically
indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.
The vintage year (e.g., V2024) refers to the final year of the series (2020 thru 2024). Different vintage years of estimates are not comparable.
Users should exercise caution when comparing 2019-2023 ACS 5-year estimates to other ACS estimates. For more information, please visit
the 2023 5-year ACS Comparison Guidance page.
Fact Notes
(a)Includes persons reporting only one race
(b)Hispanics may be of any race, so also are included in applicable race categories
(c)Economic Census - Puerto Rico data are not comparable to U.S. Economic Census data
Value Flags
DSuppressed to avoid disclosure of confidential information
FFewer than 25 firms
FNFootnote on this item in place of data
NANot available
SSuppressed; does not meet publication standards
XNot applicable
ZValue greater than zero but less than half unit of measure shown
-Either no or too few sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest or upper interval of an open ended distribution.
NData for this geographic area cannot be displayed because the number of sample cases is too small.
QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Survey of Business Owners, Building Permits.
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