St. Louis, MO-IL Metro Area

St. Louis, MO-IL · Metro Area

2,810,850Population

A metropolitan statistical area of 15 counties (7 central, 8 outlying), part of the St. Louis-St. Charles-Farmington, MO-IL combined area. The counties are tied together by commuting: people live in one and work in another.

Median household income: $80,196
Median home value: $244,800
Land area: 7,863 sq mi

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Counties in this metro area

Central counties hold the urban core; outlying counties are linked to it by commuting.

County	Role	Population	Median income	Median home value
St. Louis County, MO	Central	995,569	$82,936	$276,800
St. Charles County, MO	Central	414,535	$104,692	$320,800
St. Louis City, MO	Central	288,512	$56,160	$197,500
Madison County, IL	Central	264,238	$75,793	$173,000
St. Clair County, IL	Central	253,694	$73,854	$180,300
Jefferson County, MO	Central	229,458	$82,851	$237,200
Franklin County, MO	Outlying	105,950	$73,165	$227,600
Lincoln County, MO	Outlying	63,057	$89,278	$244,300
Macoupin County, IL	Outlying	44,350	$70,805	$138,200
Warren County, MO	Outlying	37,177	$81,209	$260,400
Clinton County, IL	Outlying	36,954	$86,588	$192,400
Monroe County, IL	Central	35,036	$102,880	$282,100
Jersey County, IL	Outlying	21,274	$80,361	$171,900
Bond County, IL	Outlying	16,716	$65,959	$145,700
Calhoun County, IL	Outlying	4,330	$93,203	$190,900

Largest cities and towns

410 places in our city pages lie in this area; the 25 largest are shown.

Place	Type	Population	Median income
St. Louis, MO	City	288,512	$56,160
O'Fallon, MO	City	93,801	$110,443
St. Charles, MO	City	71,508	$85,937
St. Peters, MO	City	59,092	$91,637
Florissant, MO	City	51,773	$65,318
Chesterfield, MO	City	49,574	$133,037
Wentzville, MO	City	47,061	$112,394
Belleville, IL	City	41,370	$63,535
Belleville (Township), IL	—	41,370	$63,535
Edwardsville (Township), IL	—	40,522	$92,712
St. Clair, IL	—	35,601	$80,309
Collinsville (Township), IL	—	35,410	$77,785
Oakville, MO	CDP	35,333	$106,362
Wildwood, MO	City	35,133	$161,060
Caseyville (Township), IL	—	35,032	$87,204
University City, MO	City	34,685	$80,694
O'Fallon, IL	City	32,262	$105,982
Ballwin, MO	City	31,279	$124,626
Mehlville, MO	CDP	29,805	$67,071
Wood River (Township), IL	—	29,687	$62,083
Kirkwood, MO	City	29,363	$121,270
Maryland Heights, MO	City	27,880	$86,436
O'Fallon (Township), IL	—	26,785	$100,136
Granite City, IL	City	26,549	$59,205
Edwardsville, IL	City	26,474	$86,721

Also in the St. Louis-St. Charles-Farmington, MO-IL combined area

Farmington, MO · micro · 66,999 Centralia, IL · micro · 37,000

Demographic Rates

Poverty Rate

10.5%

Unemployment

4.2%

College Educated

38.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1701, S2301, S1501

Race & Ethnicity

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table B02001, B03003

Income Profile

Median Household Income

$80,196

Mean Household Income

$109,342

Income Distribution

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1901, S1902, S1903, B19013, B19113

Sex Distribution

Male

48.8%

Female

51.2%

Population Split

Male48.8%

Female51.2%

The sex distribution of a population provides insight into the demographic balance of a community. Significant skews in this ratio can be influenced by local industries (e.g., military bases, mining, or tech hubs), educational institutions, or migration patterns. Understanding this balance is essential for planning public health initiatives and social services.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S0101

Ancestry

German25.4%

Irish12.7%

English10.1%

Italian4.5%

French2.7%

Polish2.4%

Mexican2.4%

Scottish1.6%

African0.9%

Reported ancestry groups representing the cultural heritage of the population. Percentages may not sum to 100% as residents may report multiple ancestries or none.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table B04006

Immigration & Nativity

Nativity Status

5.2%Foreign Born

94.8%Native Born

Citizenship Status

Naturalized53.4%

Non-Citizen46.6%

Period of Entry

2010 or Later38.4%

Before 201061.6%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table B05001, B05002

Housing Characteristics

Total Housing Units

1,273,302

Median Rent

$1,113/mo

Median Home Value

$244,800

Median Year Built

1973

Housing Tenure

Housing Types

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table DP04

Education Enrollment

Total Enrolled

656,148

College Enrollment

17.7%

High School

22.1%

College Educated

38.2%

K-12 Enrollment

Higher Education

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1401, S1501

Transportation & Commute

Mean Commute Time

24.9 min

Drive Alone Rate

73.5%

Public Transit

1.3%

Work From Home

15.5%

Commute Mode

Vehicle Ownership

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S0801, B08141

Age Distribution

Under 18

21.8%

18-34 Years

21.5%

35-64 Years

38.7%

65+ Years

18.0%

Population Composition

Under 1821.8%

18-3421.5%

35-6438.7%

65+18.0%

The age distribution of a community impacts local services, school requirements, and the labor market. A higher percentage of youth suggests a need for schools and family services, while a larger senior population may indicate a retirement destination or a need for healthcare services.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S0101

Household Composition

Married Couples

45.6%

Single Parent

6.2%

Living Alone

31.6%

Avg Size

2.37

Household Types

Married Couples45.6%

Single Parent6.2%

Living Alone31.6%

Household composition offers insights into the social fabric of a community. A high percentage of married couples often correlates with stability and higher household incomes, while a significant number of single-person households may indicate a younger transient population or an aging community.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1101

Economic Profile

Per Capita Income

$45,864

SNAP Usage

10.0%

Health Insurance

94.2%

Household Income Breakdown

Under $25k13.5%

$25k - $50k17.3%

$50k - $100k29.1%

$100k+40.1%

Key Industries

Manufacturing

10.8%

Retail Trade

10.5%

Education & Health Care

24.5%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1901, S2201, DP03

Health & Disability

Disability Rate

13.5%With Disability

Percentage of the civilian noninstitutionalized population with a disability.

Health Insurance Coverage

94.2%With Coverage

Percentage of the civilian noninstitutionalized population with health insurance coverage.

Why this matters: High disability rates may indicate a need for accessible infrastructure and specialized healthcare services. Health insurance coverage is a key indicator of a community's access to preventative care and financial resilience against medical emergencies.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S1810, S2701

Technology Access

Broadband Internet

91.8%vs ~90% National Avg

Computer Ownership

95.3%vs ~95% National Avg

Source: U.S. Census Bureau, ACS 5-Year Estimates (2020–2024) • Table S2801

Cost of Living & Housing

Cost of Living Scale

Lower is better

95.1

0130

Below average< 97

Near average97 - 103

Above average> 103

Prices compared with the US average (100). 105 means about 5% more expensive than average.

Housing Affordability

Higher is better

173.0

0200

Hard to Afford< 80

Moderate80 - 100

Affordable> 100

100 means a family earning the median family income just qualifies to buy the median-value home (20% down, 30-year loan at 6.72%).

Source: BEA Regional Price Parities · NAR affordability formula with Census ACS 2020–2024 incomes and home values and the Freddie Mac 30-year rate (2024)

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