St. Johns County Demographics

A map of St. Johns County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	237,648	214,428	77.4%	78.4%
Hispanic	27,846	22,607	9.1%	8.3%
Black	14,918	12,940	4.9%	4.7%
Multiracial	13,008	11,766	4.2%	4.3%
Asian	11,455	9,764	3.7%	3.6%
Native American/Other	2,059	1,920	0.7%	0.7%

St. Johns County, Florida has an estimated population of 306,934, a large increase from the 273,425 recorded in the 2020 Census. The population is 77.4% White, 9.1% Hispanic, 4.9% Black, 4.2% Multiracial, 3.7% Asian, and 0.7% Native American/Other. This demographic dot map shows the population of St. Johns County, with one dot drawn for each person counted by the Census, color-coded by race.

St. Johns has become more racially diverse since the 2020 Census. It is considerably less diverse than Florida overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In St. Johns County, that probability was 37.3% in 2020 and 38.7% in the most recent ACS estimates.

St. Johns County is ranked the 22nd most populous county in Florida, out of 67 counties. St. Johns County was ranked the 24th most populous county in the 2020 Census.

St. Johns County's White Population

237,648 residents of St. Johns County, or 77.4% of the population, identify as White. The share of White residents in St. Johns County is significantly higher than in Florida overall, where 50.4% of the population is White. St. Johns County ranks 14th statewide in terms of White residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's White population has grown by an estimated 10.8%. White residents' share of St. Johns County's population has decreased from 78.4% to 77.4%.

St. Johns County is more White than neighboring Putnam County (69.3% White), Clay County (67.8% White), Flagler County (72.4% White), Duval County (48.4% White), and Bradford County (72.9% White).

St. Johns County's Black Population

14,918 residents of St. Johns County, or 4.9% of the population, identify as Black. The share of Black residents in St. Johns County is lower than in Florida overall, where 14.6% of the population is Black. St. Johns County ranks 62nd statewide in terms of Black residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's Black population has grown by an estimated 15.3%. Black residents' share of St. Johns County's population has remained roughly unchanged at 4.9%.

St. Johns County is less Black than neighboring Putnam County (14.7% Black), Clay County (11.6% Black), Flagler County (8.8% Black), Duval County (28.2% Black), and Bradford County (15.4% Black).

St. Johns County's Asian Population

11,455 residents of St. Johns County, or 3.7% of the population, identify as Asian. The share of Asian residents in St. Johns County is comparable to the share in Florida overall, where 2.9% of the population is Asian. St. Johns County ranks 8th statewide in terms of Asian residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's Asian population has grown by an estimated 17.3%. Asian residents' share of St. Johns County's population has remained roughly unchanged at 3.7%.

St. Johns County is more Asian than neighboring Putnam County (0.5% Asian), Clay County (3% Asian), Flagler County (2.4% Asian), and Bradford County (0.7% Asian). St. Johns County is less Asian than neighboring Duval County (4.9% Asian).

St. Johns County's Hispanic Population

27,846 residents of St. Johns County, or 9.1% of the population, identify as Hispanic. The share of Hispanic residents in St. Johns County is significantly lower than in Florida overall, where 27.4% of the population is Hispanic. St. Johns County ranks 41st statewide in terms of Hispanic residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's Hispanic population has grown by an estimated 23.2%. Hispanic residents' share of St. Johns County's population has increased from 8.3% to 9.1%.

St. Johns County is more Hispanic than neighboring Bradford County (5% Hispanic). St. Johns County is less Hispanic than neighboring Putnam County (11.2% Hispanic), Clay County (11.4% Hispanic), Flagler County (11.6% Hispanic), and Duval County (12.4% Hispanic).

St. Johns County's Native American/Other Population

2,059 residents of St. Johns County, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in St. Johns County is comparable to the share in Florida overall, where 0.8% of the population is Native American/Other. St. Johns County ranks 42nd statewide in terms of Native American/Other residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's Native American/Other population has grown by an estimated 7.2%. Native American/Other residents' share of St. Johns County's population has remained roughly unchanged at 0.7%.

St. Johns County is more Native American/Other than neighboring Putnam County (0.6% Native American/Other), and Bradford County (0.1% Native American/Other). St. Johns County is less Native American/Other than neighboring Clay County (1.1% Native American/Other), and Duval County (0.9% Native American/Other).

St. Johns County's Multiracial Population

13,008 residents of St. Johns County, or 4.2% of the population, identify as Multiracial. The share of Multiracial residents in St. Johns County is comparable to the share in Florida overall, where 3.8% of the population is Multiracial. St. Johns County ranks 15th statewide in terms of Multiracial residents as a share of the population, out of 67 counties.

Since the 2020 Census, St. Johns County's Multiracial population has grown by an estimated 10.6%. Multiracial residents' share of St. Johns County's population has remained roughly unchanged at 4.2%.

St. Johns County is more Multiracial than neighboring Putnam County (3.6% Multiracial), and Flagler County (4% Multiracial). St. Johns County is less Multiracial than neighboring Clay County (5.1% Multiracial), Duval County (5.2% Multiracial), and Bradford County (5.9% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.