St. Clair County: Demographics & People
Census counts 94,166 people in St. Clair County. Median age 41.2 years. (1.8y older than Alabama). Population is 10% Black and 3% Hispanic or Latino. County is gaining 4,119 residents per year (2022-2023). County health: 39% adult obesity, 18% smoke.
Population & Trend
Current population 94,166; figures track the most recent Census ACS 5-year estimates.
| Population | 94,166 people |
|---|---|
| Total Town Population | 50,210 people |
Age Distribution
Median age 41.2y is 2.3 years older than the U.S. median (38.9y).
| Age Summary · Total Pop | 94,166 |
|---|---|
| Age Summary · Under 18 | 20,940 |
| Age Summary · 18 To 34 | 18,876.0× |
| Age Summary · 35 To 64 | 37,518.0× |
| Age Summary · 65 Plus | 16,832 |
| Age Summary · Pct Under 18 | 22.2% |
| Age Summary · Pct 18 To 34 | 20.1% |
| Age Summary · Pct 35 To 64 | 39.8% |
| Median age | 41.2 years (vs Alabama 39.4y) |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Race, Ethnicity & Diversity
Of 94,166 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups).
| Census Demographics · Total Population | 94,166 people |
|---|---|
| White residents | 78,776 |
| Black residents | 9,575 |
| Asian residents | 537 |
| Census Demographics · Aian | 337 |
| Census Demographics · Nhpi | 85 |
| Census Demographics · Other Race | 1,466 |
| Census Demographics · Two Or More Races | 3,390 |
| Diversity Index | 28.8% |
| Asian population | 0.6% |
| Black population | 10.2% |
| Hispanic or Latino population | 3.0% |
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 | 94,166 |
|---|---|
| Census Citizenship · Native | 92,555 |
| Residents born in this state | 71,760 |
| Residents born in another state | 20,191 |
| Census Citizenship · Foreign Born | 12,210 |
| Census Citizenship · Naturalized | 1,990 |
| Census Citizenship · Non Citizen | 604 |
| Foreign-born residents | 13.0% |
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 gaining 4,119 residents per year on net (IRS migration data).
| Migration · People moving in (annual) | 87,393 |
|---|---|
| Migration · People moving out (annual) | 83,274 |
| Migration · Net migration (in − out) | 4,119 |
| Migration · Population growing | Yes |
| 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 | 92,023 |
|---|---|
| With Disability | 15,337 |
| Pct With Disability | 16.7% |
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 | 1,966 |
|---|
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28
Other
| Census Mobility · Total | 93,146 |
|---|---|
| Census Mobility · Same House | 83,585 |
| Census Mobility · Same County | 4,254 |
| Census Mobility · Diff County Same State | 4,066 |
| Census Mobility · Diff State | 1,171 |
| Census Mobility · From Abroad | 70 |
| Census Mobility · Moved Total | 9,561 |
| Census Mobility · Pct Moved In Year | 10.3% |
| Pct White | 83.7% |
Sources: Census ACS 5-Year 2024 — county-level query · Refreshed 2026-04-28