Seneca County, Ohio

2024 results by precinct

51 precincts · 25,404 votes cast

Trump · R+37

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−37.3%	7,765	17,241	25,404
2020	R	−34.2%	8,266	17,086	25,810
2016	R	−30.2%	7,404	14,825	24,568
2012	R	−7.4%	11,353	13,243	25,609
2008	R	−2.7%	13,087	13,823	27,553
2004	R	−18.3%	10,957	15,886	26,991
2000	R	−17.9%	9,512	13,863	24,351
1996	D	+1.4%	10,044	9,713	23,511
1992	R	−1.8%	9,280	9,763	26,150
1988	R	−17.9%	9,504	13,704	23,430
1984	R	−35.0%	7,905	16,520	24,642
1980	R	−29.5%	7,303	14,172	23,259
1976	R	−7.4%	10,074	11,730	22,516
1972	R	−25.1%	8,180	13,939	22,918
1968	R	−13.3%	8,970	12,040	23,020
1964	D	+20.7%	14,518	9,536	24,054
1960	R	−22.4%	10,001	15,772	25,773
1956	R	−47.8%	6,260	17,728	23,988
1952	R	−43.1%	7,060	17,750	24,810
1948	R	−18.1%	7,954	11,493	19,524
1944	R	−41.7%	6,224	15,137	21,361
1940	R	−37.1%	7,464	16,272	23,736
1936	R	−4.4%	8,982	9,953	22,259
1932	D	+13.6%	11,894	9,007	21,284
1928	R	−24.2%	8,136	13,369	21,587
1924	R	−18.5%	6,290	9,641	18,091
1920	R	−10.2%	8,175	10,064	18,500
1916	D	+19.3%	6,451	4,301	11,161
1912	D	+26.6%	5,082	2,362	10,240
1908	D	+10.2%	6,138	4,959	11,512
1904	R	−5.1%	4,757	5,291	10,420
1900	D	+9.4%	5,946	4,904	11,090
1896	D	+11.9%	6,347	4,988	11,465
1892	D	+11.7%	5,378	4,195	10,110
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

2.0%

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

Sample size too small to break out by ancestry reliably.

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: 40.2 in this county, 39.1 nationally

Male

Age

Female

0.6%

85+

1.3%

2.6%

75–84

3.0%

5.8%

65–74

6.0%

6.6%

55–64

6.8%

5.8%

45–54

5.9%

35–44

5.5%

6.4%

25–34

5.7%

5.6%

18–24

5.2%

8.1%

5–17

7.8%

2.8%

2.7%

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

Median household income

2024 inflation-adjusted dollars

$66,025

Seneca County ranks near the middle of US counties.

Seneca County$66,025

Ohio$71,389

United States$80,734

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

Poverty rate

All persons below federal poverty line

11.9%

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

27.2%

Mainline Protestant

7.0%

Methodist

4.8%

Other Christian

3.5%

Baptist

1.1%

Pentecostal & Holiness

1.1%

Source · 2020 US Religion Census. Remaining 55.3% of residents not counted as adherents by any reporting body.

Seneca County's mix of small cities like Tiffin and rural farmland anchors a voting pattern that has trended consistently rightward over the past four presidential cycles, with the 2024 margin of R+37.5 among the widest in the state's tier-two counties.

The Republican margin in Seneca County reached its widest at forty-eight points in 1956. The margin in 2024 was thirty-seven points, in line with the county's deep historical pattern.

Seneca County's loyalty is rooted in its place. Median household income of $66,025, a 90% non-Hispanic-white share, and a population of 54,770 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Huron County and Stark County.

Most similar counties

Seneca County has voted Republican for as long as anyone can remember.