County · Missouri

St. Louis County, Missouri

St. Louis County, Missouri. St. Louis County had 990,911 residents in 2025 by the Census Bureau's estimate, down 1.4% since 2020, while Missouri grew 1.9%. It holds 99 places (88 cities, villages and boroughs and 11 census-designated) and 236 census tracts. GEOID 29189.

St. Louis County is one of the 15 counties of the St. Louis, MO-IL metropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

990,911

Census Bureau estimate (no margin published)
2020 Census count: 1,004,125 · ACS 2020-2024: 995,569

Median household income

$82,936

±$1,390 (90% margin)
Missouri: $70,702

Median home value

$276,800

±$2,745 (90% margin)
Missouri: $230,300

Median gross rent

$1,209

±$12 (90% margin)
Missouri: $1,033

How many people live in St. Louis County, and is it growing?

The 2020 Census counted 1,004,125 residents in St. Louis County. The Census Bureau estimates 990,911 for July 1, 2025, down 1.4% since 2020, while Missouri grew 1.9%. The 2020-2024 American Community Survey puts the population at 995,569 over 508 square miles of land.

July 2020→2021 −4,515 (998,850)
2021→2022 −7,131 (991,719)
2022→2023 −1,742 (989,977)
2023→2024 +1,689 (991,666)
2024→2025 −755 (990,911)

St. Louis County in Missouri. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	St. Louis County	Missouri	Change since 2015-2019
Total population	995,569	6,191,814	−1,350
Households	413,849±1,712	2,508,227	+7,865
Average household size	2.36±0.01	2.40	−0.05
Housing units	446,192±189	2,825,287	+5,232

St. Louis County's population since 2000

From 1,016,315 in 2000 to 990,911 in 2025: down 2.5%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 1,016,315
2005 (estimate) 1,004,109
2010 Census 998,954
2015 (estimate) 1,001,585
2020 Census 1,004,125
2025 (estimate) 990,911

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in St. Louis County?

St. Louis County holds 99 places: 88 cities, villages and boroughs (incorporated places) and 11 census-designated places. The largest is Florissant with 51,124 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in St. Louis County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Florissant	city	52,533	51,773±99	$65,318	$148,800	10.1%	100%
Chesterfield	city	49,999	49,574±48	$133,037	$472,500	3.9%	100%
Oakville	CDP	36,301	35,333±1,793	$106,362	$318,600	6.4%	100%
Wildwood	city	35,417	35,133±55	$161,060	$495,800	2.2%	100%
University City	city	35,065	34,685±42	$80,694	$306,700	14.5%	100%
Ballwin	city	31,103	31,279±51	$124,626	$377,100	4.8%	100%
Kirkwood	city	29,461	29,363±40	$121,270	$451,400	5.3%	100%
Mehlville	CDP	28,955	29,805±2,166	$67,071	$218,400	7.8%	100%
Maryland Heights	city	28,284	27,880±58	$86,436	$227,000	4.7%	100%
Hazelwood	city	25,458	25,114±36	$55,908	$167,400	15.9%	100%
Webster Groves	city	24,010	23,712±27	$115,227	$387,600	4.2%	100%
Affton	CDP	20,417	19,052±1,216	$79,539	$212,400	6.6%	100%
Old Jamestown	CDP	19,790	20,651±1,626	$99,521	$236,100	7.4%	100%
Creve Coeur	city	18,834	18,643±45	$127,188	$614,000	6.1%	100%
Ferguson	city	18,527	18,213±30	$47,524	$109,900	24.2%	100%
Spanish Lake	CDP	18,413	17,873±1,543	$55,920	$135,600	14.8%	100%
Manchester	city	18,333	18,160±52	$97,801	$323,100	6.4%	100%
Concord	CDP	17,668	18,368±1,277	$89,038	$303,600	3.9%	100%
Clayton	city	17,355	17,380±44	$123,000	$830,000	8.0%	100%
Lemay	CDP	17,117	16,228±1,765	$60,399	$152,200	14.7%	100%
Overland	city	15,955	15,695±29	$61,773	$131,900	9.7%	100%
St. Ann	city	13,019	12,811±30	$52,323	$126,600	13.0%	100%
Jennings	city	12,895	12,918±46	$38,984	$68,800	25.2%	100%
Crestwood	city	12,404	12,295±43	$107,169	$319,600	5.5%	100%
Town and Country	city	11,640	11,607±33	$232,534	$928,500	1.7%	100%
Eureka	city	11,646	13,081±308	$108,394	$379,200	7.9%	99%
Bridgeton	city	11,445	11,369±40	$72,005	$237,700	11.5%	100%
Bellefontaine Neighbors	city	10,740	10,498±26	$49,170	$99,700	21.4%	100%
Ellisville	city	9,985	10,002±32	$113,309	$366,600	4.6%	100%
Richmond Heights	city	9,286	9,153±33	$94,460	$358,700	5.5%	100%
Sunset Hills	city	9,198	9,112±37	$138,144	$523,800	3.7%	100%
Des Peres	city	9,193	9,170±40	$224,327	$609,200	2.0%	100%
Ladue	city	8,989	8,940±25	$250,000 or more	$1,056,300	1.1%	100%
Olivette	city	8,504	8,645±24	$111,660	$460,800	4.3%	100%
Maplewood	city	8,269	8,156±26	$65,125	$237,000	8.7%	100%
Brentwood	city	8,233	8,144±22	$99,719	$299,700	5.1%	100%
Berkeley	city	8,228	8,123±29	$44,265	$82,300	35.1%	100%
Sappington	CDP	7,995	7,367±729	$77,650	$297,600	3.9%	100%
Valley Park	city	6,885	6,795±24	$67,898	$251,000	9.8%	100%
St. John	city	6,643	6,527±33	$53,755	$106,300	15.4%	100%
Black Jack	city	6,634	6,589±19	$78,331	$193,000	5.0%	100%
Shrewsbury	city	6,406	6,316±18	$80,757	$269,800	10.0%	100%
GlendaleGEOID 2927334	city	6,176	6,114±19	$170,700	$494,000	2.0%	100%
Dellwood	city	4,914	4,847±26	$72,540	$83,700	21.7%	100%
Rock Hill	city	4,750	4,693±20	$95,372	$278,700	5.2%	100%
Glasgow Village	CDP	4,584	5,504±1,306	$29,530	$69,000	46.7%	100%
Breckenridge Hills	city	4,458	4,402±27	$40,958	$96,100	25.9%	100%
Normandy	city	4,287	4,239±21	$29,379	$87,300	36.9%	100%
Fenton	city	3,989	4,088±24	$101,000	$374,500	3.5%	100%
Woodson Terrace	city	3,950	3,908±17	$47,417	$104,000	26.9%	100%
Northwoods	city	3,687	3,623±25	$45,330	$76,000	24.8%	100%
Frontenac	city	3,612	3,701±25	$233,425	$979,800	2.0%	100%
Castle Point	CDP	2,815	2,340±596	$37,679	$62,600	34.1%	100%
Pine Lawn	city	2,754	2,716±17	$24,837	$66,800	42.6%	100%
Green Park	city	2,705	2,690±17	$79,141	$238,800	7.9%	100%
Clarkson Valley	city	2,609	2,584±35	$247,000	$867,000	3.0%	100%
Pagedale	city	2,554	2,531±13	$31,250	$75,200	26.1%	100%
Riverview	village	2,397	2,731±651	$48,482	$72,700	24.9%	100%
Marlborough	village	2,221	2,157±563	$50,300	$191,600	4.6%	100%
Moline Acres	city	2,156	2,843±658	$55,132	$90,000	18.9%	100%
Bel-Ridge	village	2,132	2,432±673	$38,049	$90,700	17.7%	100%
Warson Woods	city	2,018	2,393±332	$206,979	$612,800	1.3%	100%
Hanley Hills	village	2,009	2,178±528	$52,828	$73,300	33.9%	100%
Vinita Park	city	1,970	2,042±367	$53,995	$99,300	20.8%	100%
Lakeshire	city	1,554	1,396±210	$62,115	$258,700	9.9%	100%
St. George	CDP	1,553	1,458±438	$68,091	$161,100	7.5%	100%
WellstonGEOID 2978370	city	1,537	1,628±388	$44,957	not published	35.4%	100%
Winchester	city	1,447	1,939±658	$87,917	$216,500	4.5%	100%
Bel-Nor	village	1,399	1,556±267	$110,667	$218,000	5.8%	100%
Oakland	city	1,390	1,562±189	$114,861	$410,700	6.4%	100%
Charlack	city	1,304	1,596±541	$54,792	$119,000	17.0%	100%
Hillsdale	village	1,216	873±241	$37,583	$52,700	27.3%	100%
Velda City	city	1,188	1,158±258	$37,105	$49,500	21.6%	100%
Calverton Park	city	1,143	1,546±435	$68,021	$128,400	21.0%	100%
Pacific	city	7,414	7,475±122	$62,860	$249,300	5.5%	15%
Cool Valley	city	1,039	1,411±451	$53,560	$102,800	28.8%	100%
Country Club Hills	city	1,014	854±233	$47,519	$49,200	10.4%	100%
Grantwood Village	town	941	1,058±234	$153,947	$535,300	1.4%	100%
Pasadena Hills	city	912	1,190±301	$70,341	$252,800	4.2%	100%
Norwood CourtGEOID 2953462	town	890	797±324	$42,882	$87,000	13.7%	100%
Velda Village Hills	city	881	858±250	$45,000	$51,200	19.3%	100%
Edmundson	city	860	975±267	$49,213	$92,900	28.1%	100%
Bella Villa	city	757	691±195	$59,583	$161,800	9.4%	100%
Flordell Hills	city	724	1,195±499	$36,410	$51,800	41.1%	100%
Greendale	city	642	794±353	$56,500	$115,400	40.8%	100%
Twin Oaks	village	605	734±228	$120,151	$298,800	2.7%	100%
Sycamore Hills	village	561	672±205	$85,962	$137,500	14.1%	100%
Crystal Lake Park	city	508	553±136	$159,554	$627,600	1.1%	100%
Beverly Hills	city	475	488±237	$47,381	$70,900	14.1%	100%
Wilbur Park	village	439	491±132	$91,667	$204,900	11.2%	100%
Pasadena ParkGEOID 2956414	village	435	710±280	$91,964	$170,100	13.5%	100%
HuntleighGEOID 2933850	city	361	366±137	$250,000 or more	$2,000,000 or more	1.6%	100%
Westwood	village	316	338±77	$237,500	$1,017,900	0.6%	100%
Uplands Park	village	312	322±143	$50,250	$85,200	13.7%	100%
KinlochGEOID 2938972	city	263	322±135	$44,688	$84,800	33.9%	100%
Bellerive AcresGEOID 2904248	city	191	288±95	$138,438	$329,300	1.4%	100%
Glen Echo ParkGEOID 2927370	village	122	101±40	$67,500	$153,100	7.9%	100%
Country Life AcresGEOID 2916876	village	72	73±31	$250,000 or more	$1,625,000	13.7%	100%
ChampGEOID 2913078	village	10	6±8	not published	not published	0.0%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in St. Louis County?

The median resident of St. Louis County is 40.3 years old; 22.0% are under 18 and 19.1% are 65 or older. The largest group is non-Hispanic white residents at 61.4%, then non-Hispanic Black residents at 24.0%. 8.4% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	St. Louis County	Missouri	Change since 2015-2019
Median age	40.3±0.2	39.0	no clear change
Under 18 years	22.0%±0.1 pts	22.3%	–
65 years and over	19.1%±0.1 pts	17.9%	–
Hispanic or Latino (any race)	3.9%	5.2%	+1.0 pts
White alone, not Hispanic	61.4%±0.3 pts	76.3%	−4.6 pts
Black or African American alone, not Hispanic	24.0%±0.2 pts	10.9%	no clear change
Asian alone, not Hispanic	4.9%±0.1 pts	2.1%	+0.6 pts
American Indian and Alaska Native alone, not Hispanic	0.1%±0.1 pts	0.2%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.1 pts	0.1%	–
Two or more races, not Hispanic	5.3%±0.4 pts	4.8%	–
Some other race alone, not Hispanic	0.5%±0.1 pts	0.4%	–
Born outside the United States	8.4%±0.3 pts	4.5%	+1.0 pts
Speak a language other than English at home (age 5+)	10.5%±0.4 pts	6.7%	–
Civilian veterans (age 18+)	6.0%±0.2 pts	7.3%	–
With a disability	12.1%±0.3 pts	14.9%	–
No health insurance coverage	5.7%±0.3 pts	8.8%	no clear change
High school graduate or higher (age 25+)	94.5%±0.2 pts	91.9%	–
Bachelor's degree or higher (age 25+)	47.4%±0.6 pts	32.4%	+3.8 pts
Graduate or professional degree (age 25+)	20.4%±0.4 pts	12.6%	–
Moved from another state in the past year	2.0%±0.2 pts	2.5%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in St. Louis County earn?

Half of St. Louis County's 413,849 households earn less than $82,936 a year (±$1,390), against $70,702 in Missouri. In 2015-2019 it was $82,973 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.8% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	St. Louis County	Missouri	Change since 2015-2019
Median household income	$82,936±$1,390	$70,702	no clear change
Mean household income	$123,036±$1,614	$96,247	–
Per capita income	$51,977±$680	$39,695	+$994
People below the poverty line	9.8%±0.5 pts	12.6%	no clear change
Children under 18 below the poverty line	13.5%±1.1 pts	15.8%	no clear change
Households receiving SNAP	8.0%±0.4 pts	9.8%	–
Households with a broadband subscription	93.4%±0.3 pts	89.3%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in St. Louis County?

Owners occupy 69.2% of St. Louis County's occupied homes and renters 30.8%. The median owner-occupied home is valued at $276,800 by its owner (±$2,745). The median renter pays $1,209 a month including utilities, and 39.5% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	St. Louis County	Missouri	Change since 2015-2019
Median home value (owner-occupied)	$276,800±$2,745	$230,300	+$32,138
Median gross rent	$1,209±$12	$1,033	no clear change
Renters paying 35% or more of income on rent	39.5%±1.2 pts	36.6%	+1.8 pts
Median monthly owner costs, with a mortgage	$1,753±$20	$1,524	–
Owner-occupied homes	69.2%±0.5 pts	68.1%	no clear change
Housing units	446,192±189	2,825,287	+5,232
Homeowner vacancy rate	0.7%±0.2 pts	0.9%	–
Rental vacancy rate	5.0%±0.7 pts	5.0%	–
Single-family detached homes	72.0%±0.5 pts	70.5%	–
Mobile homes	0.3%±0.1 pts	5.2%	–
Built 2020 or later	0.7%±0.1 pts	1.6%	–
Built 1939 or earlier	9.7%±0.3 pts	13.3%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is St. Louis County building?

Builders took permits for 957 new housing units across St. Louis County in 2025 (496 single-family), 1.0 per 1,000 residents.

2019 1,185 units
2020 1,232 units
2021 1,034 units
2022 1,777 units
2023 1,153 units
2024 1,193 units
2025 957 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in St. Louis County get to work?

71.3% of St. Louis County's workers drive alone and 18.3% work from home. The average trip to work takes 23.1 minutes. The unemployment rate in 2020-2024 averaged 4.3%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	St. Louis County	Missouri	Change since 2015-2019
In the labor force (age 16+)	65.0%±0.4 pts	63.1%	–
Unemployment rate	4.3%±0.3 pts	4.0%	no clear change
Drove alone to work	71.3%±0.6 pts	74.8%	–
Carpooled	6.4%±0.4 pts	8.1%	–
Public transportation	1.4%±0.2 pts	0.8%	–
Walked	1.4%±0.2 pts	1.8%	–
Worked from home	18.3%±0.5 pts	13.0%	+12.7 pts
Mean travel time to work	23.1 min±0.3	23.5 min	−1.3 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are St. Louis County's census tracts?

St. Louis County is divided into 236 census tracts. Among those with a reliable estimate, median household income runs from $26,426 (Tract 2119) to $250,000 or more (Tract 2216.27).

All 236 census tracts of St. Louis County, with their figures

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does St. Louis County compare with Missouri's other counties?

St. Louis County's rank among Missouri's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	1st of 115
Growth 2020-2025	94th of 115
Residents per square mile	2nd of 115
Median household income	7th of 115
Median home value	5th of 115
Median gross rent	4th of 115
Poverty rate	97th of 115
Bachelor's degree or higher	2nd of 115
Median age	67th of 115

Every county in Missouri

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for St. Louis County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.