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Clayton, MO
City in St. Louis County, Missouri. ZIP codes: 63105.
Population
17,380
Land area
2.5sq mi
People per sq mi
6,933
ZIP codes
1
Clayton and its ZIP codes
Clayton at a glance
- Clayton is about 77 times as dense as Missouri as a whole.
- By population, it ranks 50th among 1,062 cities and towns in Missouri.
- The median household income is $123,000, 74% above the Missouri median of $70,702.
- A typical owner-occupied home is valued at $830,000 (about 3.6 times the Missouri figure) and median rent is $1,692 a month.
Local data for Clayton, MO
Counts from official public data
Housing and community stats
Clayton, MO, American Community Survey 2020-2024
Median household income
$123,000
Poverty rate
8.0%
Median home value
$830,000
Median rent
$1,692/mo
Homeownership
54.9%
Bachelor's or higher
84.9%
Median age
30.0
Average commute
16.6 min
Largest reported origins and ancestries: German Americans (3,395), Irish Americans (2,316), Chinese Americans (985).
Economy and federal money
Jobs, pay, income and spending are for St. Louis County. PPP loans are for Clayton.
Unemployment rate
4.2%
Aug 2026, -0.3 pts in a year
Average annual pay
$78,741
589,803 jobs, 2025
Income per person
$104,775
BEA, 2024
Federal spending
$15.6B
FY 2026, $15,488 per person
PPP loans
$201M
1,537 loans, 17,323 jobs reported
How people get to work
Clayton, MO, workers 16 and older. American Community Survey 5-year estimates
- Drove alone57.4%
- Carpooled5.6%
- Public transit1.5%
- Walked10.1%
- Bicycle1.8%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home23.4%
Average one-way commute: 16.6 minutes for people who do not work from home.
Environment and hazard risk
Clayton, MO, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: heat wave
Storm events since 1996
1,321
Countywide, mostly hail
Flood insurance policies
2,070
0.6% of homes, county
July high / Jan low
90° / 25°F
43.9 inches of rain a year
Hazards, floods and storm historyCheck a flood zone4 historic places
Health statistics
Share of adults in Clayton, MO, CDC PLACES estimates
Obesity
23.9%
U.S. 33.3% -9.4 pts
Diabetes
6.9%
U.S. 12.1% -5.2 pts
Smoking
8.2%
U.S. 12.8% -4.6 pts
Uninsured (18-64)
5.4%
U.S. 11.1% -5.7 pts
ZIP codes in Clayton
1 in or overlapping Clayton. Population shown
Cities near Clayton
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Richmond HeightsCity | 1.1 mi | 2.3 |
| University CityCity | 1.3 mi | 5.9 |
| BrentwoodCity | 2.1 mi | 2 |
| MaplewoodCity | 2.5 mi | 1.6 |
| PagedaleCity | 2.8 mi | 1.2 |
| LadueCity | 2.8 mi | 8.6 |
| Hanley HillsVillage | 2.8 mi | 0.4 |
| WellstonCity | 2.9 mi | 0.9 |
| OlivetteCity | 3 mi | 2.8 |
| Vinita ParkCity | 3.1 mi | 0.8 |
| Rock HillCity | 3.1 mi | 1.1 |
| GreendaleCity | 3.6 mi | 0.2 |
| HillsdaleVillage | 3.7 mi | 0.3 |
| OverlandCity | 3.8 mi | 4.4 |
| CharlackCity | 3.9 mi | 0.3 |
| Velda CityCity | 3.9 mi | 0.2 |
Frequently asked questions
- What county is Clayton, MO in?
- Clayton is in St. Louis County, Missouri.
- What ZIP codes are in Clayton, MO?
- ZIP codes in or overlapping Clayton include 63105.
- What is the population of Clayton, MO?
- About 17,380 people live in Clayton, based on American Community Survey 5-year estimates.
- What cities are near Clayton?
- Nearby places include Richmond Heights (1.1 mi), University City (1.3 mi), Brentwood (2.1 mi), Maplewood (2.5 mi), Pagedale (2.8 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023