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Keystone Heights, Florida
Images top, left to right: Lake Geneva, City Hall, Keystone Heights Junior/Senior High School
Images top, left to right: Lake Geneva, City Hall, Keystone Heights Junior/Senior High School
Location in Clay County and the state of Florida
Location in Clay County and the state of Florida
Country  United States
State  Florida
County Clay
 • Total 1.09 sq mi (2.82 km2)
 • Land 1.07 sq mi (2.78 km2)
 • Water 0.01 sq mi (0.04 km2)
141 ft (43 m)
 • Total 1,446
 • Density 1,345.12/sq mi (519.52/km2)
Time zone UTC-5 (Eastern (EST))
 • Summer (DST) UTC-4 (EDT)
ZIP code
Area code(s) 352
FIPS code 12-36475
GNIS feature ID 0285088

Keystone Heights is a city located in southwestern Clay County, Florida, United States. The population of the city was 1,446 at the 2020 census.


The city was founded by Pennsylvanians who named it after their home state's nickname, the "Keystone State".

Residents began relocating here in the early 1920s, and the city was chartered in April 1925.


Keystone Heights is located in northeast Florida in the southwest corner of Clay County, at 29°47′14″N 82°1′59″W / 29.78722°N 82.03306°W / 29.78722; -82.03306 (29.787243, -82.033026). The city overlooks the north shore of Lake Geneva. State Road 21 leads northeast 30 miles (48 km) (via SR 16 to Green Cove Springs, the Clay County seat, and south 18 miles (29 km) to Hawthorne. SR 100 crosses SR 21 and leads north 12 miles (19 km) to Starke and southeast 26 miles (42 km) to Palatka.

According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.9 km2), of which 0.012 square miles (0.03 km2), or 1.16%, is water.

Some of the attractions that can be found in the historic town of Keystone include a weekly farmers' market, Keystone Beach (where one can stumble upon a sprightly young nesting alligator), a bike path that runs through the town center, Keystone Heights Fighting Indians football team, the Santa Fe College Watson Center, and the Donald Ross designed Lakeside Links Golf Club.


Historical population
Census Pop.
1930 107
1940 145 35.5%
1950 307 111.7%
1960 655 113.4%
1970 800 22.1%
1980 1,056 32.0%
1990 1,315 24.5%
2000 1,349 2.6%
2010 1,350 0.1%
2020 1,446 7.1%
U.S. Decennial Census

As of the census of 2000, there were 1,349 people, 515 households, and 374 families residing in the city. The population density was 296.9 people per square mile (114.7/km2). There were 562 housing units at an average density of 123.7 per square mile (47.8/km2). The racial makeup of the city was 96.07% White, 0.44% African American, 0.52% Native American, 0.52% Asian, 0.30% Pacific Islander, 1.19% from other races, and 0.96% from two or more races. Hispanic or Latino people of any race were 2.67% of the population.

There were 515 households, out of which 36.5% had children under the age of 18 living with them, 56.7% were married couples living together, 12.6% had a female householder with no husband present, and 27.2% were non-families. 24.1% of all households were made up of individuals, and 14.0% had someone living alone who was 65 or older. The average household size was 2.62 and the average family size was 3.09.

In the city, the population was spread out, with 28.1% under the age of 18, 8.1% from 18 to 24, 25.0% from 25 to 44, 21.5% from 45 to 64, and 17.3% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 86.1 males. For every 100 females age 18 and over, there were 81.3 males.

The median income for a household in the city was $39,519, and the median income for a family was $47,404. Males had a median income of $37,500 versus $24,886 for females. The per capita income for the city was $19,157. About 5.1% of families and 8.3% of the population were below the poverty line, including 10.5% of those under age 18 and 7.5% of those age 65 or over.

City Council

Keystone Heights has a city manager form of government, with a mayor and four council members, all elected at large. They serve three year terms.

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