Statistic Mount Pleasant St. Louis Missouri
Population 3,978 315,543 6,326,040
Population density (sq mi) 6,689 5,093 92
Median age 42.7 36.0 38.3
Male/Female ratio 0.9:1 0.9:1 1.0:1
Married (15yrs & older) n/a 38% 57%
Families w/ Kids under 18 54% 42% 42%
Speak English n/a 90% 94%
Speak Spanish n/a 3% 3%
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Demographics Quick Facts

  • The population density in Mount Pleasant is 31% higher than St. Louis
  • The median age in Mount Pleasant is 19% higher than St. Louis
  • In Mount Pleasant 59.22% of the population is White
  • In Mount Pleasant 29.80% of the population is Black
  • In Mount Pleasant 0.42% of the population is Asian

Compare St. Louis, MO Demographics

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      Mount Pleasant racial demographics

      Race Mount Pleasant St. Louis Missouri
      White 59.22% 46.44% 82.53%
      Black 29.80% 45.66% 11.58%
      Asian 0.42% 3.37% 1.78%
      American Indian 0.08% 0.26% 0.42%
      Native Hawaiian 0.00% 0.04% 0.11%
      Mixed race 6.37% 3.10% 2.44%
      Other race 4.11% 1.13% 1.13%
      In Mount Pleasant, 4.1% 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

      Mount Pleasant age breakdown

      Marital status

      Age of children in married couples

      Source: The Mount Pleasant, St. Louis, MO demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS) and include 2026 modeled data developed using proprietary methodologies.