Akashic

2024StatewideR+13.2

Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab

County99 areas · 2024 presidential vote

Johnson58,84626,087D+37.886,644 Polk140,075112,240D+10.8256,838 Story26,76521,665D+10.349,526 Linn66,35854,237D+9.9122,959 Black Hawk31,29930,572D+1.262,906 Scott42,47945,976R+3.990,133 Dallas29,40232,374R+4.762,961 Jefferson3,7884,353R+6.88,346 Dubuque23,70528,224R+8.652,770 Winneshiek5,3216,427R+9.211,979 Cerro Gordo9,95512,627R+11.623,020 Muscatine8,21211,152R+14.919,752 Des Moines7,93510,794R+15.019,054 Marshall7,1349,815R+15.517,270 Poweshiek4,0675,758R+16.910,013 Clinton9,47213,964R+18.823,878 Pottawattamie17,46826,335R+19.944,559 Warren12,71219,486R+20.632,804 Boone5,8959,199R+21.515,403 Cedar4,0756,390R+21.710,644 Bremer5,5718,799R+22.114,607 Woodbury16,14525,969R+22.942,921 Washington4,2977,119R+24.411,588 Floyd2,7824,744R+25.67,650 Jones3,9426,820R+26.210,980 Tama3,0705,379R+26.88,616 Jasper7,14112,701R+27.520,198 Iowa3,4006,068R+27.79,639 Lee5,65910,152R+27.716,198 Buchanan3,7666,790R+28.110,750 Worth1,5082,715R+28.24,287 Fayette3,3346,325R+30.49,848 Winnebago1,9093,636R+30.65,642 Mitchell1,9433,736R+31.15,771 Webster5,64110,850R+31.116,748 Wapello4,8969,479R+31.414,583 Howard1,6193,157R+31.74,850 Jackson3,5677,074R+32.510,801 Greene1,6033,211R+32.94,881 Benton4,7399,549R+33.214,509 Buena Vista2,4624,962R+33.27,537 Hamilton2,4825,004R+33.27,597 Allamakee2,3504,857R+34.37,318 Clayton3,0176,255R+34.49,400 Henry2,9956,439R+35.99,600 Union1,8744,044R+36.16,013 Wright1,7703,853R+36.45,723 Chickasaw1,9194,234R+37.16,239 Marion5,92813,289R+37.619,566 Guthrie1,9744,446R+37.86,543 Hardin2,5535,790R+38.38,460 Audubon9702,214R+38.33,249 Madison3,0086,864R+38.510,028 Mills2,4565,671R+39.08,253 Montgomery1,5083,486R+39.05,074 Delaware2,9786,984R+39.510,138 Dickinson3,2977,775R+39.911,234 Cass2,0775,007R+40.67,217 Louisa1,4803,584R+40.95,142 Franklin1,3933,431R+41.64,900 Grundy2,0194,998R+41.77,146 Harrison2,2455,566R+41.77,959 Carroll3,1537,814R+41.811,140 Clarke1,2653,140R+41.94,479 Page2,0605,153R+42.27,322 Shelby1,8114,600R+42.96,505 Clay2,3676,047R+43.18,541 Crawford1,8124,651R+43.46,545 Emmet1,3153,422R+43.94,798 Kossuth2,2845,983R+44.18,397 Adams5761,517R+44.12,135 Fremont1,0232,711R+44.53,795 Adair1,0862,916R+44.94,080 Palo Alto1,3383,576R+44.94,982 Monona1,2363,331R+45.24,637 Butler2,1445,784R+45.28,046 Cherokee1,6114,398R+45.76,105 Appanoose1,6864,704R+46.56,484 Calhoun1,3283,708R+46.75,097 Decatur9572,711R+46.93,739 Hancock1,5234,336R+47.45,939 Lucas1,1693,400R+48.04,646 Humboldt1,2363,770R+49.95,083 Monroe1,0023,104R+50.64,158 Ringgold6382,015R+51.32,686 Mahaska2,5778,207R+51.410,946 Keokuk1,2193,869R+51.55,150 Sac1,2894,100R+51.55,460 Ida8262,771R+53.23,655 Pocahontas7962,727R+53.93,582 Plymouth3,10410,661R+54.113,971 Davis8783,027R+54.43,954 Van Buren7782,785R+55.43,625 Taylor6662,381R+55.73,081 Wayne6432,426R+57.13,124 O'Brien1,4285,998R+60.77,525 Osceola5552,623R+64.03,229 Lyon1,0235,899R+69.67,002 Sioux2,62616,053R+70.719,001

Iowa was a swing state for a generation, and then it was not. Barack Obama carried it twice — by 9.5 points in 2008 and 5.8 in 2012 — before it turned to Donald Trump three straight times: by 9.3 points in 2016, 8.2 in 2020, and 13.2 in 2024, the widest of the three. The 2024 result marks a 19-point move in the margin from 2012, among the largest of any state across those twelve years. Iowa had backed the winner of every presidential race from 2000 through 2020; in 2024 it sat thirteen points to the right of the national result.

The Democratic vote pulled back to a few eastern river towns and college counties. Only five of the ninety-nine counties voted Democratic in 2024: Johnson, home to the University of Iowa, the strongest at D+37.8; Polk, which holds Des Moines, at D+10.8; Story, home to Iowa State at Ames, at D+10.3; Linn, around Cedar Rapids, at D+9.9; and Black Hawk, around Waterloo, at D+1.2. Scott County, on the Mississippi at Davenport, went Republican by 3.9 points after backing the Democrat in 2020. Johnson and Sioux mark the spread — D+37.8 against R+70.7, a gap of more than a hundred points.

The move was sharpest in the farm counties along the Mississippi and across the north. Clinton County, on the river, went from Obama by 22.8 points in 2012 to Trump by 18.8 in 2024 — a 41-point reversal in a dozen years; Jackson County, just upriver, swung from D+16.9 to R+32.5. Iowa is older and less college-educated than the country: 31.8 percent of adults hold a bachelor’s degree, 35th of fifty states. Both top offices are open in 2026 — Governor Reynolds and Senator Ernst both declined re-election — pairing Rob Sand against Zach Lahn for governor and Ashley Hinson against Josh Turek for the Senate seat.

presidential margin

2004–2024 · Democratic minus Republican

2004R+0.7

2008D+9.5

2012D+5.8

2016R+9.3

2020R+8.2

2024R+13.2

full record · 1892 → 2024

presidential returns

2024 turnout 69.8% of 2,381,746 citizens 18+

Year	Democrat	Republican	Others	Total	CVAP	Turnout
2024	707,278	927,019	29,209	1,663,506	2,381,746	69.8%
2020	759,061	897,672	34,138	1,690,871	2,331,653	72.5%
2016	653,669	800,983	126,719	1,581,371	2,295,040	68.9%
2012	822,544	730,617	29,019	1,582,180	2,249,702	70.3%
2008	828,940	682,379	25,501	1,536,820	2,206,632	69.6%
2004	741,898	751,957	13,053	1,506,908	2,163,562^†	69.6%

^† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.

People and households

Who lives here

Exact values for this place, its state, and the United States.

Race · ethnicity · ancestry

Communities and origins

German30.5%12.5%

Irish12.8%9.4%

English10.2%9.5%

American4.6%5.3%

Norwegian4.1%—

Dutch2.7%—

Swedish1.9%—

Italian1.6%4.8%

Mexican5.0%11.3%

Guatemalan0.4%0.5%

Puerto Rican0.3%1.8%

Salvadoran0.3%0.7%

Honduran0.2%0.3%

African American†2.6%9.9%

African0.3%0.5%

Sudanese0.2%—

Asian Indian0.5%1.4%

Burmese0.3%—

Vietnamese0.3%0.6%

Chinese0.3%1.3%

Korean0.2%0.4%

Filipino0.2%0.9%

Laotian0.2%—

Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.

Age and life stage

Measure	Iowa	United States
Median age	38.8	39.1
Age 18–24	10.0%	9.2%
Age 65 and older	18.1%	17.2%

Household economy

Measure	Iowa	United States
Median household income	$75,059	$84,427
Poverty rate	11.1%	12.5%
Bachelor's degree or higher (25+)	31.8%	35.6%

Languages at home

Measure	Iowa	United States
Speaks a non-English language at home	9.2%	22.3%
Spanish	4.7%	13.6%
Other Asian & Pacific Island	1.0%	1.1%

Religious landscape

Measure	Iowa	United States
Catholic	14.7%	18.6%
Evangelical Protestant	10.9%	16.5%
Unclaimed / not counted	55.2%	51.5%
Mainline Protestant	15.8%	5.2%

American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.

current representation

Current officeholders

RKim ReynoldsGovernor

RChris CournoyerLieutenant Governor

RPaul PateSecretary of State

RBrenna BirdAttorney General

RRoby SmithState Treasurer

DRob SandState Auditor

RMike NaigSecretary of Agriculture

RChuck GrassleyU.S. Senate+0.36

RJoni ErnstU.S. Senate+0.54

U.S. House4 seats · R 4

RIA-01Mariannette Miller-Meeks

RIA-02Ashley Hinson

RIA-03Zach Nunn

RIA-04Randy Feenstra

Statewide officers curated as of 2026-06-27 (Ballotpedia / state SoS); U.S. delegation from Voteview HSall_members.csv.

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