St. Matthews: Demographics & People
St. Matthews's population stands at 1,645 people, in 808 households. Population grew 1.2% from 1,626 (2022) to 1,645 (2024). Median age 54.3 years. (7.3y older than Calhoun County; 13.8y older than South Carolina). Children under 18 are 11% of the population. Population is 50% Black and 48% White (non-Hispanic). The community is moderately diverse (Simpson index 0.52). 59% of households are family-led. County is gaining 212 residents per year (2022-2023). County health: 38% adult obesity, 20% smoke.
- 2.0 people per household.
- 41% non-family households (singles, roommates).
Population & Trend
Population grew 1.2% from 1,626 (2022) to 1,645 (2024) — about 1.9× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~1,664 (extrapolated at 0.6%/yr trend). Census Bureau Vintage estimate: 1,690.
| Census data vintage | 2024 |
|---|---|
| Population | 14,119 people |
| Annual growth rate · Population change | 1.2% |
| Annual growth rate · Population (2022) | 1,626 |
| Annual growth rate · Population (2024) | 1,645 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | growing |
| Population | 1,645 people |
| Population Estimate | 1,690 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 54.3y is 15.4 years older than the U.S. median (38.9y). Children under 18 make up 11% — below the U.S. share of ~22%.
| Age Summary · Median age | 54.3 years (vs South Carolina 40.5y) |
|---|---|
| Age Summary · Children Pct | 11.2% |
| Age Summary · Character | retirement community |
| Population under 18 | 185 |
| Median age | 54.3 years (vs South Carolina 40.5y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 1,645 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.52 (0 = single group, 1 = perfectly even distribution); this is read as moderately diverse.
| White residents | 755 |
|---|---|
| Black residents | 830 |
| Asian residents | 8 |
| Hispanic or Latino residents | 22 |
| Diversity Index · Diversity index (Simpson) | 51.7% |
| Diversity Index · Diversity label | moderately diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 51.4% |
| Black population | 50.1% |
| Hispanic or Latino population | 0.7% |
| White (non-Hispanic) population | 47.7% |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 1.8% are foreign-born — below the U.S. average of 13.9%. 4% have naturalized to U.S. citizenship.
| Residents born in this state | 1,199 |
|---|---|
| Residents born in another state | 355 |
| Share born in this state | 72.9% |
| Share born in another state | 27.1% |
| Native-born U.S. citizens | 21.6% |
| Foreign-born residents | 1.8% |
| Naturalized citizens | 3.8% |
| Total foreign-born residents | 47 |
| From Europe | 39 |
| From Africa | 8 |
Households & Family Composition
808 households. Averaging 2.0 people each — smaller than the U.S. average of 2.5. 59% are family households — below the U.S. share of ~65%. Of 374 families, 7% are married couples with children.
| Children under 18 | 217 |
|---|---|
| Total families | 374 |
| Married couples with children | 28 |
| Average household size | 1.99 |
| Women who gave birth (past year) | 6.2% |
| Grandparents living with grandchildren | 18 |
| Grandparents responsible for grandchildren | 9 |
| Family households | 477 households |
| Households that are families | 59.0% |
| Total households | 808 households |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 7.0% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 212 residents per year on net (IRS migration data).
| Moved within the county (past year) | 7.0% |
|---|---|
| Migration · People moving in (annual) | 12,358 |
| Migration · People moving out (annual) | 12,146 |
| Migration · Net migration (in − out) | 212 |
| Migration · Population growing | Yes |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
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.
| Residents with a disability | 100 |
|---|---|
| Disability rate | 5.6% |
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. 164 residents live in group quarters (10.0% of population).
| Living in group quarters | 164 |
|---|
Other
| Congressional District · District | 6 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 45,017 |
| Cdc Birth Rate · State Fips | 45 |
| Cdc Birth Rate · County Fips | 17 |
| Cdc Birth Rate · County | Calhoun |
| Cdc Birth Rate · Birth Rate | 20.0% |
| Cdc Birth Rate · Lower Ci | 14.60 |
| Cdc Birth Rate · Upper Ci | 26.60 |
| Cdc Mortality · Fips | 45,017 |
| Cdc Mortality · County | Calhoun County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 502 |
| Cdc Vaccination · Fips | 45,017 |
| Cdc Vaccination · County | Calhoun County |
| Cdc Vaccination · Dose1 Pop Pct | 50.7% |
| Cdc Vaccination · Series Complete Pct | 43.0% |
| Cdc Vaccination · Booster Pct | 46.9% |
| Cdc Vaccination · Population 2019 | 14,553 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.00 |
| Family Score · Schools | 2 |
| Family Score · Children Pct | 11.2% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 1,645, growing, retirement community, middle-class, mixed |
| Town Summary · Population | 1,645 people |
| Town Summary · County | Calhoun County |
Sources: NCES school congressional district assignment · federal dataset cascade