What is the population of Saint Johns County?

The population of Saint Johns County, FL is 278,715.

Where is Saint Johns County located?

Saint Johns County, FL is located at latitude 29.9121800 and longitude -81.4098900. It is in United States.

What is the area of Saint Johns County?

The area of Saint Johns County, FL is 2127 km².

What is the elevation of Saint Johns County?

Saint Johns County, FL has an elevation of 13 meters (43 feet) above sea level.

What time zone is Saint Johns County in?

Saint Johns County, FL is in the America/New_York time zone.

How has the population of Saint Johns County changed?

The population of Saint Johns County, FL has increased from 190,039 (2010) to 278,715 (2020), a change of 46.7%.

Saint Johns County, Florida

Saint Johns County: county in Florida, United States

About

Saint Johns County is a county located in the U.S. state of Florida. As of the 2010 census, the population was 190,039 and a population density of 89 people per km². After 10 years in 2020 county had an estimated population of 278,715 inhabitants. Its county seat is St. Augustine. The county was created 204 years ago in 1821.

Saint Johns County locator map — Location of Saint Johns County on Florida map.

County Snapshot

Saint Johns County at a glance

Saint Johns County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Florida counties

Open related pages

Largest city

Fruit Cove

Population 29,362

Quick Facts about Saint Johns County

Population	278,715 (2020)
Country	United States of America
State	Florida (United States)
Area	2127 km²
Water as percent of area	26.9%
Land as percent of area	73.1%
Latitude & Longitude	29.9122,-81.4099
Altitude	39 feet / 12 meters
Capital	St. Augustine
Establishment	July 21, 1821
Time Zone	America/New_York
Local time	05:40:40 (18th April 2026)
Density	131 Pop. per km² as of 2020
Population growth	31.82% (2010-2020)
Weather	91℉ Sunny 7-days weather

St. Augustine FL Courthouse St. Johns County 08-09-2010 '3' image

Geography

Saint Johns County is located at 29°54'44"N 81°24'36"W (29.9121800, -81.4098900). It has 4 neighbors: Clay County, Duval County, Flagler County and Putnam County.

Saint Johns County map

Click "full screen"

icon to open full mode. View satellite images

The largest city of Saint Johns County is Palm Valley with a population of 20,019. Other cities include, Saint Augustine population 16,518, Saint Augustine Beach population 7,138 and Villano Beach population 2,678. See all Saint Johns County cities & populated places.

Saint Johns County Populated Places

Cities, towns, neighborhoods & other populated places in Saint Johns County.

City Name	Population	Title
Fruit Cove	29,362	Census designated place
Palm Valley	20,019	City in Cameron County, Texas, United States of America
Saint Augustine	16,518	County seat of St.
Saint Augustine Shores	7,359	Census-designated place in St.
Saint Augustine Beach	7,138	City in St.
Butler Beach	4,951	Census-designated place in St.
Sawgrass	4,880	Census-designated place in St.
Villano Beach	2,678	City in St.

Weather

91°F

Sunny

2 to 9 mph S Saturday

Sunny, with a high near 91.

7-Day Forecast

Official website of Saint Johns County

Official Website

Saint Johns County has 4 neighbours.

Clay County county in Florida, United States
Duval County county in Florida, United States of America
Flagler County county in Florida, United States of America
Putnam County county in Florida, United States

St. Augustine

Demographics

The population of Saint Johns County increased by 31.82% in 10 years.

Year	Population	% Change	Method
2010	190,039	-	census
2011	196,106	3.09%	estimation process
2012	202,066	2.95%	estimation process
2013	209,439	3.52%	estimation process
2014	217,836	3.85%	estimation process
2015	226,362	3.77%	estimation process
2016	234,828	3.61%	estimation process
2017	243,693	3.64%	estimation process
2018	253,814	3.99%	estimation process
2019	264,672	4.1%	estimation process
2020	278,715	5.04%	estimation process

Comte de Saint Johns, Comté de Saint Johns, Saint Johns

Florida Other Counties (more counties)

County Name	Population	Title
Miami-Dade County	2,707,303	County in Florida, United States
Broward County	1,958,105	County in Florida, United States
Palm Beach County	1,507,600	County in Florida, United States of America
Hillsborough County	1,497,957	County in New Hampshire, United States
Orange County	1,404,396	County in Florida, United States
Pinellas County	976,802	County in Florida, United States of America
Duval County	966,728	County in Florida, United States of America
Jacksonville	920,570	The thirteenth most populous city in the United States and the center of the Jacksonville metropolitan area.
Lee County	790,767	County in Florida, United States
Polk County	744,552	County in Minnesota, United States
Brevard County	608,459	County in Florida, United States
Pasco County	570,412	County in Florida, United States of America
Volusia County	561,497	County in Florida, United States of America
Seminole County	474,171	County in Florida, United States of America
Miami	471,525	The most populous city in Florida, Miami is a major center for tourism, finance, and culture.
Sarasota County	443,465	County in Florida, United States of America