Dubuque County, Iowa

2024 results by precinct

34 precincts · 52,770 votes cast

Trump · R+9

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−8.6%	23,705	28,224	52,770
2020	R	−2.9%	25,657	27,214	53,926
2016	R	−1.2%	22,850	23,460	50,221
2012	D	+14.7%	28,768	21,280	50,894
2008	D	+20.8%	28,611	18,651	47,953
2004	D	+13.7%	26,561	20,100	47,043
2000	D	+14.6%	22,341	16,462	40,323
1996	D	+19.6%	20,839	13,391	38,051
1992	D	+15.2%	20,539	14,007	42,968
1988	D	+24.0%	23,797	14,530	38,547
1984	D	+6.4%	21,876	19,239	41,491
1980	D	+0.1%	18,689	18,649	41,539
1976	D	+7.9%	20,548	17,459	39,049
1972	D	+3.1%	18,417	17,272	36,521
1968	D	+12.8%	18,664	14,197	34,863
1964	D	+40.2%	23,695	10,104	33,823
1960	D	+26.7%	22,007	12,740	34,766
1956	R	−15.2%	13,174	17,923	31,247
1952	R	−10.8%	14,542	18,075	32,845
1948	D	+20.9%	15,521	10,111	25,913
1944	D	+1.4%	12,867	12,502	25,458
1940	R	−2.8%	13,805	14,590	28,441
1936	D	+29.3%	16,291	8,275	27,378
1932	D	+46.2%	19,210	6,747	26,999
1928	D	+33.1%	19,437	9,744	29,262
1924	R	−10.1%	5,718	8,280	25,267
1920	R	−22.9%	7,636	12,436	21,000
1916	D	+2.4%	6,063	5,772	12,223
1912	D	+39.4%	6,237	1,620	11,724
1908	D	+16.3%	6,645	4,708	11,855
1904	R	−5.0%	4,913	5,485	11,353
1900	D	+16.5%	6,655	4,752	11,564
1896	D	+11.0%	6,510	5,203	11,898
1892	D	+31.4%	6,831	3,526	10,513
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

African American

2.4%

Multiple ancestry combinations reported; no single grouping above 1%.

American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.

Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 39.1 in this county, 39.1 nationally

Male

Age

Female

0.9%

85+

1.8%

2.4%

75–84

3.2%

5.4%

65–74

5.7%

6.6%

55–64

6.6%

5.3%

45–54

5.3%

6.2%

35–44

6.0%

6.4%

25–34

6.0%

5.2%

18–24

4.6%

8.3%

5–17

8.3%

3.1%

2.8%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$77,630

Dubuque County ranks in the top 25% of US counties.

Dubuque County$77,630

Iowa$75,059

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

9.7%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

43.8%

Mainline Protestant

5.6%

Other Christian

3.1%

Methodist

2.2%

Non-Christian

0.3%

Baptist

0.2%

Pentecostal & Holiness

0.2%

Source · 2020 US Religion Census. Remaining 44.6% of residents not counted as adherents by any reporting body.

Dubuque County, long anchored by its Catholic, union-influenced workforce in Iowa's oldest city, has moved steadily toward Republican margins over the past decade — a shift that mirrors broader realignment among working-class voters in the Midwest.

The Democratic margin in Dubuque County has rarely exceeded forty-six points in modern history; the Republican margin has rarely exceeded twenty-three points. 2024 delivered the county to the Republican candidate by nine points.

Dubuque County's demographics resemble the country more than they resemble most counties. A 89% non-Hispanic-white share, a 10% poverty rate, and a median household income of $77,630 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Mower County and Carlton County.

Most similar counties

Dubuque County votes the way the country votes.