Jerome County, Idaho

2024 results by precinct

12 precincts · 7,945 votes cast

Trump · R+54

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−53.7%	1,742	6,012	7,945
2020	R	−49.2%	1,893	5,734	7,812
2016	R	−49.1%	1,329	4,644	6,751
2012	R	−46.5%	1,699	4,804	6,681
2008	R	−45.3%	1,794	4,897	6,847
2004	R	−58.3%	1,344	5,177	6,580
2000	R	−50.9%	1,360	4,418	6,007
1996	R	−27.4%	1,679	3,358	6,125
1992	R	−18.3%	1,739	2,972	6,720
1988	R	−31.0%	1,985	3,830	5,955
1984	R	−58.0%	1,284	4,913	6,259
1980	R	−54.2%	1,368	4,962	6,625
1976	R	−26.9%	1,800	3,188	5,158
1972	R	−56.9%	888	3,661	4,874
1968	R	−39.3%	976	2,785	4,602
1964	R	−26.0%	1,828	3,113	4,941
1960	R	−17.0%	2,151	3,031	5,182
1956	R	−29.4%	1,705	3,127	4,832
1952	R	−48.5%	1,318	3,807	5,130
1948	R	−0.1%	2,124	2,128	4,305
1944	R	−10.7%	1,741	2,157	3,898
1940	R	−14.5%	1,881	2,520	4,408
1936	D	+28.5%	2,374	1,297	3,778
1932	D	+22.5%	2,219	1,393	3,679
1928	R	−45.6%	759	2,050	2,831
1924	R	−31.0%	376	1,117	2,389
1920	R	−37.8%	784	1,738	2,522
1916	—	No data	—	—	—
1912	—	No data	—	—	—
1908	—	No data	—	—	—
1904	—	No data	—	—	—
1900	—	No data	—	—	—
1896	—	No data	—	—	—
1892	—	No data	—	—	—
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%

Sample size too small to break out by ancestry reliably.

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: 34.0 in this county, 39.1 nationally

Male

Age

Female

0.7%

85+

0.8%

1.5%

75–84

1.7%

4.3%

65–74

4.2%

5.7%

55–64

5.7%

45–54

5.0%

7.2%

35–44

6.2%

6.5%

25–34

6.2%

4.6%

18–24

4.1%

11.2%

5–17

11.2%

3.8%

3.5%

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

Median household income

2024 inflation-adjusted dollars

$71,724

Jerome County ranks near the middle of US counties.

Jerome County$71,724

Idaho$77,800

United States$80,734

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

Poverty rate

All persons below federal poverty line

12.6%

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

Other Christian

20.2%

Catholic & Orthodox

7.3%

Mainline Protestant

2.8%

Baptist

0.5%

Methodist

0.5%

Pentecostal & Holiness

0.2%

Source · 2020 US Religion Census. Remaining 68.5% of residents not counted as adherents by any reporting body.

Jerome County sits in the Snake River Plain's intensive agricultural corridor, where a substantial Latino workforce tied to the dairy and food-processing industries creates a demographic tension with its lopsided Republican presidential margins.

The Republican margin in Jerome County reached its widest at fifty-eight points in 2004. The margin in 2024 was fifty-four points, in line with the county's deep historical pattern.

Jerome County's loyalty is rooted in its place. Median household income of $71,724, a 65% non-Hispanic-white share, and a population of 25,173 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 Twin Falls County and Klamath County.

Most similar counties

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