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US
MO
Jefferson County
Demographics

Demographics in Jefferson County with map view

Metro Area

231,230

Population

2,795,504

St. Louis Metro Area

342

Population Density

Median Age

St. Louis Metro Area

Age Distribution

Metro Area

Baby Boomers (Age 55+)

38%

Gen X (Age 41-55)

13%

12%

Millennials (Age 20-40)

25%

26%

Gen Z (Age 0-19)

24%

Gender

Male

50%

Female

50%

Race & Ethnicity

Metro Area

White

89%

71%

Asian

Black

17%

Two or more races

Community

Metro Area

Married

57%

50%

Single

28%

33%

Divorced

11%

Widowed

Language

English Only

97%

Spanish

Indo-European

Health Insurance Coverage By Age

Total Coverage

99%

Under 19 years

23%

19 to 60 years

59%

60 years and over

17%

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