Statistic St. Marks Florida National
Population 340 21,477,737 328,239,523
Population density (sq mi) 174 410 91
Median age 68.1 41.6 37.7
Male/Female ratio 1.2:1 1.0:1 1.0:1
Married (15yrs & older) 80% 54% 55%
Families w/ Kids under 18 14% 38% 43%
Speak English 99% 72% 79%
Speak Spanish 1% 21% 13%
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Demographics Quick Facts

  • The population density in St. Marks is 58% lower than Florida
  • The median age in St. Marks is 64% higher than Florida
  • In St. Marks 97.94% of the population is White
  • In St. Marks 0.00% of the population is Black
  • In St. Marks 0.00% of the population is Asian

Compare St. Marks, FL Demographics

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      St. Marks racial demographics

      Race St. Marks Florida National
      White 97.94% 75.90% 73.35%
      Black 0.00% 16.14% 12.63%
      Asian 0.00% 2.61% 5.22%
      American Indian 0.00% 0.27% 0.82%
      Native Hawaiian 0.00% 0.06% 0.18%
      Mixed race 2.06% 2.48% 3.06%
      Other race 0.00% 2.54% 4.75%
      In St. Marks, 4.7% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      St. Marks age breakdown

      Marital status

      Age of children in married couples

      Source: The St. Marks, FL demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).