2024 results by precinct
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 3,030 | 6,694 | 9,975 | |
| 2020 | R | 3,194 | 6,334 | 9,782 | |
| 2016 | R | 2,518 | 5,213 | 8,440 | |
| 2012 | R | 2,977 | 4,827 | 8,013 | |
| 2008 | R | 3,542 | 5,220 | 8,950 | |
| 2004 | R | 3,253 | 5,408 | 8,793 | |
| 2000 | R | 3,000 | 4,423 | 7,877 | |
| 1996 | R | 2,757 | 3,781 | 7,668 | |
| 1992 | R | 2,538 | 2,569 | 7,780 | |
| 1988 | R | 2,810 | 3,605 | 6,492 | |
| 1984 | R | 1,990 | 4,524 | 6,563 | |
| 1980 | R | 1,776 | 4,046 | 6,263 | |
| 1976 | R | 2,470 | 3,225 | 5,851 | |
| 1972 | R | 1,237 | 3,679 | 5,061 | |
| 1968 | R | 1,355 | 2,781 | 4,915 | |
| 1964 | R | 2,066 | 2,380 | 4,485 | |
| 1960 | R | 1,739 | 3,353 | 5,101 | |
| 1956 | R | 1,536 | 3,677 | 5,235 | |
| 1952 | R | 1,411 | 3,980 | 5,417 | |
| 1948 | R | 2,010 | 2,986 | 5,058 | |
| 1944 | R | 1,575 | 3,504 | 5,098 | |
| 1940 | R | 2,212 | 4,330 | 6,580 | |
| 1936 | R | 3,105 | 3,711 | 6,841 | |
| 1932 | D | 3,185 | 2,974 | 6,271 | |
| 1928 | R | 1,601 | 4,810 | 6,433 | |
| 1924 | R | 1,320 | 4,422 | 6,082 | |
| 1920 | R | 1,535 | 3,463 | 5,029 | |
| 1916 | R | 2,919 | 3,174 | 6,286 | |
| 1912 | D | 1,537 | 1,155 | 3,882 | |
| 1908 | R | 1,720 | 2,270 | 4,085 | |
| 1904 | R | 1,199 | 2,568 | 3,935 | |
| 1900 | R | 1,912 | 2,374 | 4,343 | |
| 1896 | R | 2,276 | 2,322 | 4,645 | |
| 1892 | R | 0 | 1,973 | 4,056 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
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: 44.2 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$81,278
Jefferson County ranks in the top 25% of US counties.
Jefferson County$81,278
Kansas$74,275
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
5.6%
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
Source · 2020 US Religion Census. Remaining 63.4% of residents not counted as adherents by any reporting body.
Jefferson County sits in the northeastern corner of Kansas, where a predominantly rural, white population has produced consistent double-digit Republican presidential margins since at least 2000, reaching R+36.9 in 2024.
The Republican margin in Jefferson County reached its widest at fifty-one points in 1924. The margin in 2024 was thirty-seven points, in line with the county's deep historical pattern.
Jefferson County's loyalty is rooted in its place. Median household income of $81,278, a 93% non-Hispanic-white share, and a population of 18,349 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 Wright County and Cowley County.
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