St. Johns County Population

1830–2026

359.32K

2026 projection

29.7% since 2020 (increase)

0100K200K300K400K1850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for St. Johns County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026359,322+12,9943.75%
2025346,328+12,9943.90%
2024333,334+12,3803.86%
2023320,954+13,3094.33%
2022307,645+14,2934.87%
2021293,352+16,2335.86%
2020277,119+12,0514.55%
2019265,068+11,0614.35%
2018254,007+9,9404.07%
2017244,067+8,8753.77%

Showing 10 of 34 years.

St. Johns County Demographics

44.2median age

Median age

Female44.7 yrs
Male43.7 yrs

Adults

240,741
64,617 seniors (65+) · 27% of adults176,124 other adults

Sex

Female 51.1% · 156,763Male 48.9% · 150,171

Population by age

MaleFemale85+ years, male: 2,37785+ years, female: 3,63380–84 years, male: 3,07680–84 years, female: 4,40575–79 years, male: 6,40975–79 years, female: 6,49970–74 years, male: 8,49370–74 years, female: 9,74865–69 years, male: 9,48965–69 years, female: 10,48860–64 years, male: 10,65960–64 years, female: 11,27055–59 years, male: 10,07055–59 years, female: 10,81450–54 years, male: 10,76050–54 years, female: 10,58145–49 years, male: 10,75845–49 years, female: 10,42840–44 years, male: 11,54740–44 years, female: 11,02335–39 years, male: 9,14835–39 years, female: 10,75130–34 years, male: 7,35630–34 years, female: 8,00025–29 years, male: 6,34025–29 years, female: 6,03120–24 years, male: 6,91720–24 years, female: 6,99915–19 years, male: 9,78515–19 years, female: 9,68310–14 years, male: 10,50210–14 years, female: 10,8955–9 years, male: 9,6965–9 years, female: 8,4300–4 years, male: 6,7890–4 years, female: 7,08585+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 3,069 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

St. Johns County Income

$109,839median household income

Median household income

$109,839

Half of households earn more, half earn less

Median earnings

$63,804

Typical yearly pay for a worker 25 or older.

Poverty rate

6.5%

About 1 in 15 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

St. Johns County Marital Status

60% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married60%63%57%
Never married23%25%22%
Divorced11%9%12%
Widowed5%2%8%
Separated<1%<1%<1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year