St. Louis County, Missouri Population 2024

983,327

St. Louis County, Missouri's estimated 2024 population is 983,327 with a growth rate of -0.38% 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 998,846 and has seen a growth of -1.55% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
2029964,667-3,732-0.39%
2028968,399-3,732-0.38%
2027972,131-3,732-0.38%
2026975,863-3,732-0.38%
2025979,595-3,732-0.38%
2024983,327-3,732-0.38%
2023987,059-3,732-0.38%
2022990,791-7,648-0.77%
2021998,439-4,691-0.47%
20201,003,1307,6630.77%
2019995,467-433-0.04%
2018995,900-1,216-0.12%
2017997,116-1,277-0.13%
2016998,393-3,192-0.32%
20151,001,5856820.07%
20141,000,9031570.02%
20131,000,746-229-0.02%
20121,000,9758280.08%
20111,000,1471,3010.13%
2010998,84600%
1990993,52919,6332.02%
1980973,89622,5432.37%
1970951,353247,82135.23%
1960703,532297,18373.13%
1950406,349132,11948.18%
1940274,23062,63729.6%
1930211,593110,856110.04%
1920100,73718,32022.23%
191082,41732,37764.7%
190050,04013,73337.82%
189036,3074,41913.86%
188031,888-319,301-90.92%
1870351,189160,66584.33%
1860190,52485,54681.49%
1850104,97868,999191.78%
184035,97921,854154.72%
183014,1254,07640.56%
182010,0494,38277.32%
18105,667-959,000-99.41%
showing: 39 rows
2024 Growth Rate
-0.38% (-3,732)
County Website
St. Louis County
County Seat
2020 Population
1,003,130
Area
508 mi²
Density
1936 people/mi²
Growth Since 2020
-1.97% (-19,803)
Founded
October 1, 1812

St. Louis County, Missouri Population 2024

Population by Race

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Race
Population
Percentage (of total)
White641,47064.17%
Black or African American241,99024.21%
Two or more races55,1985.52%
Asian46,9724.7%
Other race13,0171.3%
Native American8580.09%
Native Hawaiian or Pacific Islander1980.02%

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 2024

St. Louis County, Missouri Median Age

40.2

Total

38.4

Male

42

Female

St. Louis County, Missouri Adults

There are 780,415 adults, (184,287 of whom are seniors) in St. Louis County, Missouri.

St. Louis County, Missouri Age Dependency

67.7

Age Dependency Ratio

30.9

Old Age Dependency Ratio

36.8

Child Dependency Ratio

St. Louis County, Missouri Sex Ratio

Female520,98652.11%
Male478,71747.89%

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
All413,2472.3768.531.5
Married187,0393.0686.913.1
Non Family155,3911.1953.846.2
Female53,4623.1949.950.1
Male17,3553.1159.340.7

3.02

Average Family Size

2.37

Average Household Size

68.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

St. Louis County, Missouri Households and Families

Male

Female

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Education Attained
Count
Percentage
Less Than 9th Grade12,3131.78%
9th to 12th Grade27,9494.03%
High School Graduate144,26020.81%
Some College135,13019.49%
Associates Degree54,1247.81%
Bachelors Degree181,79726.23%
Graduate Degree137,61819.85%

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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Race
Total
High School
Bachelors
White468,308450,144244,578
Black152,621137,55734,253
Asian32,37729,81824,506
2+ Races25,85623,67511,101
Hispanic16,78813,9406,014
Other Race7,2695,5421,900
Native American577503187
Islander10610443

The highest rate of high school graduation is among islander people with a rate of 98.11%.

The highest rate of bachelors degrees is among asian people with a rate of 75.69%.

St. Louis County, Missouri Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Overall$53,321$63,461$45,182
Less Than 9th Grade$30,201$34,689$24,502
High School Graduate$35,141$39,562$30,779
Some College$42,105$49,875$36,605
Bachelors Degree$67,194$84,616$54,807
Graduate Degree$89,933$114,388$72,812

$53,321

Average Earnings

$63,461

Average Male

$45,182

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

90.37% of St. Louis County, Missouri residents speak only English, while 9.63% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 3.44% 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
Black235,79446,76719.83%
White617,66334,8425.64%
Multiple54,2635,57310.27%
Hispanic30,3513,83312.63%
Asian45,7683,4307.49%
Other12,8222,22517.35%
Native83712114.46%
Islander1982311.62%

9.62%

Overall Poverty Rate

8.49%

Male Poverty Rate

10.65%

Female Poverty Rate

Poverty in St. Louis County, Missouri

The race most likely to be in poverty in St. Louis County, Missouri is Black, with 19.83% below the poverty level.

The race least likely to be in poverty in St. Louis County, Missouri is White, with 5.64% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.53%. Among those working part-time, it was 12.87%, and for those that did not work, the poverty rate was 16.17%.

St. Louis County, Missouri Poverty

rate

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Rate
Poverty
Less Than 9th Grade23.32%
High School12.49%
Some College8.59%
Bachelors or Greater3.27%

St. Louis County, Missouri Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed32.46%
Male Unemployed17.65%
Female Employed5.35%
Male Employed3.47%

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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Name
Median
Mean
Households$78,067$116,738
Families$104,371$146,110
Married Families$128,207$175,377
Non Families$46,281$64,996

mean

median

Income by Household Type

St. Louis County, Missouri Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

47.9%

Overall Marriage Rate

51.4%

Male Marriage Rate

44.9%

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

48,668

Number of Veterans

44,750

Male Veterans

3,918

Female Veterans

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War
Veterans
Vietnam18,459
First Gulf War9,038
Second Gulf War7,790
Korea3,611
World War II1,478

St. Louis County, Missouri Veterans by War

count

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Age Group
Veterans
75+15,060
65 to 7412,881
55 to 649,045
35 to 548,912
18 to 342,770

St. Louis County, Missouri Veterans by Age

count

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Name
Veterans
% of Total
White34,9786.68%
Black11,6216.57%
2+ Races1,3614.27%
Hispanic8174.03%
Asian4811.29%
Other Race1301.45%
Islander5332.72%
Native American446.46%

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

5.26%

Veteran Poverty Rate

29.76%

Veteran Disability Rate

St. Louis County, Missouri Veterans by Education

LaborForceParticipation

64.8%

Labor Force Participation

62%

Employment Rate

4.3%

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

67.12%

Born in St. Louis County, Missouri

92.33%

Native Born

7.67%

Foreign Born

3.35%

Non Citizen

4.31%

Naturalized

Place of Birth

92.33% of St. Louis County, Missouri residents were born in the United States, with 67.12% having been born in Missouri. 3.35% 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