St. Stephen: Demographics & People
Census counts 1,462 people in St. Stephen, in 426 households. Population grew 0.1% from 1,460 (2022) to 1,462 (2024). Median age 33.8 years. (3.1y younger than Berkeley County; 6.7y younger than South Carolina). Children under 18 are 32% of the population. Population is 64% White (non-Hispanic) and 31% Black. The community is somewhat diverse (Simpson index 0.38). 77% of households are family-led. County is gaining 17,858 residents per year (2022-2023). County health: 37% adult obesity, 15% smoke.
- 3.4 people per household.
- 23% non-family households (singles, roommates).
Population & Trend
Population grew 0.1% from 1,460 (2022) to 1,462 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~1,464 (extrapolated at 0.1%/yr trend).
| Census data vintage | 2024 |
|---|---|
| Population | 229,861 people |
| Annual growth rate · Population change | 0.1% |
| Annual growth rate · Population (2022) | 1,460 |
| Annual growth rate · Population (2024) | 1,462 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 1,462 people |
| Population Estimate | 1,466 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 33.8y is 5.1 years younger than the U.S. median (38.9y). Children under 18 make up 32% — above the U.S. share of ~22%.
| Age Summary · Median age | 33.8 years (vs South Carolina 40.5y) |
|---|---|
| Age Summary · Children Pct | 32.0% |
| Age Summary · Character | young professional |
| Population under 18 | 468 |
| Median age | 33.8 years (vs South Carolina 40.5y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 1,462 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.38 (0 = single group, 1 = perfectly even distribution); this is read as somewhat diverse.
| White residents | 1,050 |
|---|---|
| Black residents | 353 |
| Hispanic or Latino residents | 2 |
| Diversity Index · Diversity index (Simpson) | 37.8% |
| Diversity Index · Diversity label | somewhat diverse |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 74.7% |
| Black population | 30.7% |
| White (non-Hispanic) population | 64.5% |
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). 1.0% are foreign-born — below the U.S. average of 13.9%. 1% have naturalized to U.S. citizenship.
| Residents born in this state | 1,127 |
|---|---|
| Residents born in another state | 310 |
| Share born in this state | 77.1% |
| Share born in another state | 22.9% |
| Native-born U.S. citizens | 21.2% |
| Foreign-born residents | 1.0% |
| Naturalized citizens | 0.7% |
| Total foreign-born residents | 16 |
| From Europe | 10 |
| From Africa | 3 |
Households & Family Composition
426 households. Averaging 3.1 people each — larger than the U.S. average of 2.5. 77% are family households — above the U.S. share of ~65%. Of 334 families, 24% are married couples with children.
| Children under 18 | 421 |
|---|---|
| Total families | 334 |
| Married couples with children | 79 |
| Single-parent households | 16 |
| Average household size | 3.08 |
| Women who gave birth (past year) | 9.0% |
| Grandparents living with grandchildren | 140 |
| Grandparents responsible for grandchildren | 125 |
| Family households | 329 households |
| Households that are families | 77.2% |
| Total households | 426 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. 16.0% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 17,858 residents per year on net (IRS migration data).
| Moved within the county (past year) | 16.0% |
|---|---|
| Migration · People moving in (annual) | 256,834 |
| Migration · People moving out (annual) | 238,976 |
| Migration · Net migration (in − out) | 17,858 |
| 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 | 58 |
|---|---|
| Disability rate | 4.5% |
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. 88 residents live in group quarters (6.0% of population).
| Living in group quarters | 88 |
|---|
Other
| Congressional District · District | 6 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 45,015 |
| Cdc Birth Rate · State Fips | 45 |
| Cdc Birth Rate · County Fips | 15 |
| Cdc Birth Rate · County | Berkeley |
| Cdc Birth Rate · Birth Rate | 17.8% |
| Cdc Birth Rate · Lower Ci | 16.30 |
| Cdc Birth Rate · Upper Ci | 19.50 |
| Cdc Mortality · Fips | 45,015 |
| Cdc Mortality · County | Berkeley County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 5,908 |
| Cdc Vaccination · Fips | 45,015 |
| Cdc Vaccination · County | Berkeley County |
| Cdc Vaccination · Dose1 Pop Pct | 66.1% |
| Cdc Vaccination · Series Complete Pct | 55.0% |
| Cdc Vaccination · Booster Pct | 40.8% |
| Cdc Vaccination · Population 2019 | 227,907 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.50 |
| Family Score · Schools | 3 |
| Family Score · Children Pct | 32.0% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 1,462, stable, young professional, middle-class, blue collar |
| Town Summary · Population | 1,462 people |
| Town Summary · County | Berkeley County |
Sources: NCES school congressional district assignment · federal dataset cascade