St. Louis County, Missouri Population 2023

1,005,676

St. Louis County, Missouri's estimated 2023 population is 1,005,676 with a growth rate of 0.05% in the past year according to the most recent United States census data. St. Louis County, Missouri is the largest county in Missouri. The 2010 population was 998,954 and has seen a growth of 0.67% since that time.

Note: data after 2021 is projected based on recent change

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Year
Population
Growth
Growth Rate
2010998,954
2011999,4715170.05%
2012999,9885170.05%
20131,000,5055170.05%
20141,001,0225170.05%
20151,001,5395170.05%
20161,002,0565170.05%
20171,002,5735170.05%
20181,003,0905170.05%
20191,003,6075170.05%
20201,004,1255180.05%
20211,004,6425170.05%
20221,005,1595170.05%
20231,005,6765170.05%
showing: 14 rows
2023 Growth Rate
0.05% (517)
County Website
St. Louis County
Founded
October 1, 1812
County Seat
Clayton
2010 Population
998,954
Growth Since 2010
0.67% (6,722)

St. Louis County, Missouri Population 2023

Population by Race

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Race
Population
Percentage (of total)
White653,83765.25%
Black or African American242,23424.18%
Two or more races46,7604.67%
Asian45,5464.55%
Other race12,3031.23%
Native American1,0740.11%
Native Hawaiian or Pacific Islander2280.02%
showing: 7 rows

White

Black or African American

Two or more races

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

St. Louis County, Missouri Population by Race

St. Louis County, Missouri Population Pyramid 2023

St. Louis County, Missouri Median Age

40.3

Total

38.5

Male

42

Female

St. Louis County, Missouri Adults

There are 779,134 adults, (180,675 of whom are seniors) in St. Louis County, Missouri.

St. Louis County, Missouri Age Dependency

67.4

Age Dependency Ratio

30.2

Old Age Dependency Ratio

37.2

Child Dependency Ratio

St. Louis County, Missouri Sex Ratio

Female523,36452.23%
Male478,61847.77%

St. Louis County, Missouri Population by Age

St. Louis County, Missouri Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All412,8582.3868.831.2
Married189,3223.0786.813.2
Non Family153,3511.254.445.6
Female53,4563.1349.150.9
Male16,7293.146040
showing: 5 rows

3.02

Average Family Size

2.38

Average Household Size

68.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

St. Louis County, Missouri Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

St. Louis County, Missouri Educational Attainment by Sex (over 25)

St. Louis County, Missouri Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 84.94%.

The highest rate of bachelors degrees is among asian people with a rate of 64.79%.

St. Louis County, Missouri Educational Attainment by Race

All

Male

Female

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$49,258

Average Earnings

$58,745

Average Male

$41,389

Average Female

St. Louis County, Missouri Earnings by Educational Attainment

St. Louis County, Missouri Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

St. Louis County, Missouri Language

90.51% of St. Louis County, Missouri residents speak only English, while 9.49% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 3.88% of the population.

St. Louis County, Missouri Language

St. Louis County, Missouri Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Black236,50347,22519.97%
White627,68635,6175.67%
Multiple45,7454,88010.67%
Hispanic29,4243,55712.09%
Asian44,6223,0316.79%
Other12,1131,61913.37%
Native1,06329027.28%
Islander2282510.96%
showing: 8 rows

9.58%

Overall Poverty Rate

8.37%

Male Poverty Rate

10.69%

Female Poverty Rate

Poverty in St. Louis County, Missouri

The race most likely to be in poverty in St. Louis County, Missouri is Native, with 27.28% below the poverty level.

The race least likely to be in poverty in St. Louis County, Missouri is White, with 5.67% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.41%. Among those working part-time, it was 13.37%, and for those that did not work, the poverty rate was 15.87%.

St. Louis County, Missouri Poverty

rate

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Rate
Poverty
Less Than 9th Grade22.52%
High School12.08%
Some College8.55%
Bachelors or Greater3.06%
showing: 4 rows

St. Louis County, Missouri Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed32.9%
Male Unemployed18.21%
Female Employed5.39%
Male Employed3.51%
showing: 4 rows

St. Louis County, Missouri Poverty Rate by Employment Status and Sex

St. Louis County, Missouri Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

St. Louis County, Missouri Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

48.6%

Overall Marriage Rate

52.1%

Male Marriage Rate

45.4%

Female Marriage Rate

St. Louis County, Missouri Married by Age and Sex

male

female

St. Louis County, Missouri Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

St. Louis County, Missouri Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

St. Louis County, Missouri Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

51,659

Number of Veterans

47,524

Male Veterans

4,135

Female Veterans

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St. Louis County, Missouri Veterans by War

count

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St. Louis County, Missouri Veterans by Age

count

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St. Louis County, Missouri Veterans by Race

St. Louis County, Missouri Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.65%

Veteran Poverty Rate

28.63%

Veteran Disability Rate

St. Louis County, Missouri Veterans by Education

LaborForceParticipation

65.2%

Labor Force Participation

62.3%

Employment Rate

4.4%

Unemployment Rate

St. Louis County, Missouri Employment by Age

LaborForceParticipation

St. Louis County, Missouri Employment by Race

LaborForceParticipation

St. Louis County, Missouri Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

68.45%

Born in St. Louis County, Missouri

94.36%

Native Born

7.77%

Foreign Born

3.4%

Non Citizen

4.38%

Naturalized

Place of Birth

94.36% of St. Louis County, Missouri residents were born in the United States, with 68.45% having been born in Missouri. 3.4% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

St. Louis County, Missouri Place of Birth

Sources