St. Louis city: Demographics & People
Census counts 288,512 people in St. Louis city. Median age 36.8 years. (2.4y younger than Missouri). Population is 42% Black and 5% Hispanic or Latino. County is losing 13,473 residents per year (2022-2023). County health: 36% adult obesity, 20% smoke.
Population & Trend
Current population 288,512; figures track the most recent Census ACS 5-year estimates.
| Population | 288,512 people |
|---|---|
| Total Town Population | 301,578 people |
Age Distribution
Median age 36.8y is 2.1 years younger than the U.S. median (38.9y).
| Age Summary · Total Pop | 288,512 |
|---|---|
| Age Summary · Under 18 | 52,870 |
| Age Summary · 18 To 34 | 81,731.0× |
| Age Summary · 35 To 64 | 109,204.0× |
| Age Summary · 65 Plus | 44,707 |
| Age Summary · Pct Under 18 | 18.3% |
| Age Summary · Pct 18 To 34 | 28.3% |
| Age Summary · Pct 35 To 64 | 37.9% |
| Median age | 36.8 years (vs Missouri 39.2y) |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Race, Ethnicity & Diversity
Of 288,512 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| Census Demographics · Total Population | 288,512 people |
|---|---|
| White residents | 131,235 |
| Black residents | 121,932 |
| Asian residents | 10,200 |
| Census Demographics · Aian | 723 |
| Census Demographics · Nhpi | 77 |
| Census Demographics · Other Race | 5,695 |
| Census Demographics · Two Or More Races | 18,650 |
| Diversity Index | 60.9% |
| Asian population | 3.5% |
| Black population | 42.3% |
| Hispanic or Latino population | 5.3% |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS).
| Census Citizenship · Total | 288,512 |
|---|---|
| Census Citizenship · Native | 268,062 |
| Residents born in this state | 186,277 |
| Residents born in another state | 79,976 |
| Census Citizenship · Foreign Born | 25,965 |
| Census Citizenship · Naturalized | 10,001 |
| Census Citizenship · Non Citizen | 1,809 |
| Foreign-born residents | 9.0% |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Residential Stability & Migration
How long residents have lived here and where they came from. The surrounding county is losing 13,473 residents per year on net (IRS migration data).
| Migration · People moving in (annual) | 223,682 |
|---|---|
| Migration · People moving out (annual) | 237,155 |
| Migration · Net migration (in − out) | -13,473 |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2022-2023
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Census Disability · Total Pop | 284,915 |
|---|---|
| With Disability | 47,830 |
| Pct With Disability | 16.8% |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 0 residents live in group quarters.
| Census Group Quarters · Total | 10,329 |
|---|
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Other
| Census Mobility · Total | 285,113 |
|---|---|
| Census Mobility · Same House | 243,847 |
| Census Mobility · Same County | 19,395 |
| Census Mobility · Diff County Same State | 10,532 |
| Census Mobility · Diff State | 9,296 |
| Census Mobility · From Abroad | 2,043 |
| Census Mobility · Moved Total | 41,266 |
| Census Mobility · Pct Moved In Year | 14.5% |
| Pct White | 45.5% |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28