Where does this demographic data come from?

All demographic data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates, which samples about 3.5 million households annually. The 5-year estimates provide the most reliable data for small geographies like municipalities.

What is the difference between Census data and ACS data?

The decennial Census (conducted every 10 years) is a full population count focusing on basic demographics. The ACS is an ongoing survey that collects detailed data on income, education, housing, commute patterns, and more. ACS data is updated annually but represents averages over a 5-year period.

How accurate is this data for small towns?

For smaller municipalities, ACS estimates have wider margins of error because fewer residents are sampled. The 5-year estimates reduce this uncertainty by averaging over a longer period. For towns under 5,000 people, treat specific numbers as approximations rather than precise counts.

St. Marks, FL Population, Income & Demographics 2026

CSATallahassee-Bainbridge MSATallahassee#2/10 Income

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Demographics — 2024 ACS 5-Year Estimatesi

Census

Populationi

243

Median Agei

Race & Ethnicityi

White

95.9%233

Two or More

4.1%10

Educational Attainment (Age 25+)i

GED/Alternative

9.5%22

High School Diploma

28.4%66

Some College (<1 yr)

3.9%9

Some College (1+ yr)

42.7%99

Associate's Degree

0.9%2

Bachelor's Degree

5.2%12

Master's Degree

3%7

HS or Higher

93.5%

BA or Higher

8.2%

Graduate+

Housingi

Median Home Valuei

$256,300

Median Renti

—

Tenure

Owner-Occupied

93.4%113

Renter-Occupied

6.6%8

Total Units

160

Homeownership

93.4%

Vacancy Rate

24.4%

Home Values

$50K–$100K

8.8%10

$100K–$150K

23.9%27

$150K–$200K

13.3%15

$200K–$300K

7.1%8

$300K–$500K

44.2%50

$500K–$1M

2.7%3

Rent Distribution

$500–$750

$750–$1,000

Year Built

2010–2019

11.2%18

2000–2009

51.9%83

1990–1999

1.2%2

1980–1989

5.6%9

1970–1979

12.5%20

1960–1969

1.9%3

1950–1959

7.5%12

1940–1949

7.5%12

1939 or earlier

0.6%1

Heating Fuel

Electricity

95%115

Bottled/LP Gas

2.5%3

Utility Gas

1.7%2

Fuel Oil

0.8%1

Economyi

Median Household Incomei

$62,321

Mean Household Incomei

$66,890

Per Capita Incomei

$34,062

Poverty Ratei

3.7%

Unemploymenti

Labor Forcei

Federally Subsidized Housingi

HUD

The federal government helps low-income families, seniors, and people with disabilities afford housing through several programs. Residents typically pay about 30% of their income toward rent, with the government covering the rest. This data shows how many households in this community receive that assistance.

Subsidized Homesi

Programs in this community

Housing Choice Vouchers4 homes

Rental vouchers (Section 8) that help tenants pay for private-market housing

Ancestry & Heritage

Self-reported ancestry groups. Residents may report multiple ancestries, so totals may exceed 100%.

Commute & Transportationi

Workersi

Avg. Commutei

38.1 min

How People Get to Work

Travel Time to Work

Workforce

Total Employed

Occupations

Industries

Social Characteristicsi

Veteransi

49(20.5% of civilian adults)

Health Insurancei

79%Insured

21%Uninsured