St. Johns County, Florida: Diversifying Metro county. In 2024, voted R+31%. Democratic peak: D+95 in 1892.
Key facts
- 2024 presidential margin
- R+31MIT Election Lab
- Political typology
- Diversifying MetroAkashic typology
- Population
- 306,9342024 5-year
- Median household income
- $109,8392024 5-year
- White (non-Hispanic)
- 79.2%2024 5-year
- Black
- 5.1%2024 5-year
- Hispanic / Latino
- 9.1%2024 5-year
- Peak Democratic margin
- D+95 in 1892MIT Election Lab
- Peak Republican margin
- R+55 in 1972MIT Election Lab
- Most similar
- Okaloosa County, FL · similarity 1.00
2024 results by precinct
2024 precinct map of St. Johns CountyPrecinct-level 2024 presidential results for St. Johns County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | +17.2% |
| 1888 | No data |
| 1892 | +95.5% |
| 1896 | +78.7% |
| 1900 | +49.2% |
| 1904 | +35.7% |
| 1908 | +30.6% |
| 1912 | +69.1% |
| 1916 | +47.1% |
| 1920 | +18.3% |
| 1924 | +26.9% |
| 1928 | +25.9% |
| 1932 | +45.1% |
| 1936 | +51.7% |
| 1940 | +52.0% |
| 1944 | +40.8% |
| 1948 | +2.4% |
| 1952 | −3.7% |
| 1956 | −12.9% |
| 1960 | +15.0% |
| 1964 | −26.2% |
| 1968 | −10.0% |
| 1972 | −55.3% |
| 1976 | +5.2% |
| 1980 | −23.0% |
| 1984 | −42.5% |
| 1988 | −40.8% |
| 1992 | −19.7% |
| 1996 | −21.8% |
| 2000 | −33.0% |
| 2004 | −38.0% |
| 2008 | −31.6% |
| 2012 | −37.7% |
| 2016 | −33.4% |
| 2020 | −26.7% |
| 2024 | −31.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 66,828 | 128,728 | 197,389 | ||
| R | 63,850 | 110,946 | 176,622 | ||
| R | 43,099 | 88,684 | 136,514 | ||
| R | 35,190 | 78,513 | 114,795 | ||
| R | 35,791 | 69,222 | 105,844 | ||
| R | 26,399 | 59,196 | 86,290 | ||
| R | 19,509 | 39,564 | 60,771 | ||
| R | 16,716 | 27,318 | 48,549 | ||
| R | 12,291 | 20,188 | 39,986 | ||
| R | 8,029 | 19,228 | 27,415 | ||
| R | 6,652 | 16,500 | 23,154 | ||
| R | 6,898 | 11,234 | 18,826 | ||
| D | 7,412 | 6,660 | 14,371 | ||
| R | 2,549 | 8,919 | 11,511 | ||
| O | 2,748 | 3,880 | 11,310 | ||
| R | 4,357 | 7,450 | 11,807 | ||
| D | 5,583 | 4,125 | 9,708 | ||
| R | 3,940 | 5,104 | 9,044 | ||
| R | 4,366 | 4,702 | 9,068 | ||
| O | 1,994 | 1,840 | 6,305 | ||
| D | 3,764 | 1,582 | 5,346 | ||
| D | 4,122 | 1,303 | 5,425 | ||
| D | 3,411 | 1,085 | 4,496 | ||
| D | 3,344 | 1,265 | 4,609 | ||
| D | 3,307 | 1,939 | 5,291 | ||
| D | 1,023 | 517 | 1,884 | ||
| D | 1,810 | 1,221 | 3,215 | ||
| D | 1,133 | 326 | 1,713 | ||
| D | 836 | 45 | 1,144 | ||
| D | 758 | 344 | 1,352 | ||
| D | 550 | 204 | 969 | ||
| D | 764 | 234 | 1,077 | ||
| D | 561 | 50 | 649 | ||
| D | 589 | 0 | 617 | ||
| — | — | — | — | ||
| D | 727 | 514 | 1,241 | ||
| — | — | — | — | ||
| — | — | — | — |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
15.2%
Irish
13.6%
German
13.2%
Italian
7.8%
American
6.9%
Polish
3.0%
French
2.6%
African American
4.1%
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. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
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.
2024 ACS
Median household income
Inflation-adjusted dollars
$109,839
St. Johns County ranks in the top 5% of US counties.
St. Johns County$109,839
Florida$74,568
United States$80,734
St. Johns County ranks in the top 5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
6.5%
Child poverty is below the national average.
Children under 186.5%
Working age (18–64)6.3%
Seniors (65+)8.5%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
88.6%
speak English only
Spanish5.0%
Other Indo-European4.1%
Asian & Pacific Islander1.9%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 63.6% of residents not counted as adherents by any reporting body.
St. Johns sits south of Jacksonville along the St. Augustine coast and has nearly doubled in population since 2010, drawing suburban and exurban migrants who have reinforced its already wide Republican presidential margins.
The Democratic margin here reached ninety-five points in 1892. Between 2020 and 2024 the county moved five points toward the Republican candidate; the 2024 margin was thirty-one points.
A population of 306,934, a 79% non-Hispanic-white share, and a median household income of $109,839 describe the county. The county's voting pattern over the last decade is most similar to that of Okaloosa County and Santa Rosa County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
St. Johns County, Florida. Akashic. https://akashic.app/county/12109/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
More diversifying metro counties
Frequently asked questions
How did St. Johns County, Florida vote in 2024?
In 2024, St. Johns County, Florida voted Republican by 31.4 points (R+31), carried by the Republican candidate. Out of 197,389 votes cast, 66,828 went Democratic and 128,728 went Republican.
What is St. Johns County, Florida's political typology?
Akashic places St. Johns County, Florida in the "Diversifying Metro" typology — Mid-size metropolitan counties growing more diverse and trending Democratic. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 17 times, Republican 16 times, and other 2 times.
When did St. Johns County, Florida last vote Democratic?
The most recent presidential election in which St. Johns County, Florida voted Democratic was 1976.
How many people live in St. Johns County, Florida?
St. Johns County, Florida has a population of 306,934 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in St. Johns County, Florida?
Median household income in St. Johns County, Florida is $109,839 — above the national median of $80,734. The Florida state median is $74,568.
What is the political history of St. Johns County, Florida?
Akashic tracks 38 presidential elections in St. Johns County, Florida from 1876 to 2024. Of those, 17 went Democratic and 16 went Republican. The county's typology — "Diversifying Metro" — captures where that record, its demographics, and its recent swing place it among American communities.