City in St. Louis County, Missouri · 2.5 sq mi · 7,117 people per sq mi
About 18,000 people live in Clayton. The typical household earns $123,000, and the median resident is 30 years old.
2026 projection
From 17,361 in 2020
Poverty rate 7.97%
Men 29.1 · Women 30.6
1890–2026
17,842
2026 projection
2.8% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1890–2026
17,842
2026 projection
2.8% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 17,842 | +35 | 0.20% |
|---|---|---|---|
| 2025 | 17,807 | +304 | 1.74% |
| 2024 | 17,503 | -7 | 0.04% |
| 2023 | 17,510 | +353 | 2.06% |
| 2022 | 17,157 | -136 | 0.79% |
| 2021 | 17,293 | -68 | 0.39% |
| 2020 | 17,361 | +598 | 3.57% |
| 2019 | 16,763 | -28 | 0.17% |
| 2018 | 16,791 | -44 | 0.26% |
| 2017 | 16,835 | +169 | 1.01% |
Showing 10 of 27 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 174 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 13 residents
38% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 38% | 40% | 36% |
| Never married | 52% | 54% | 50% |
| Divorced | 6% | 4% | 8% |
| Widowed | 4% | 2% | 5% |
| Separated | <1% | 0% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau