St. Charles: Demographics & People
Census counts 139 people in St. Charles, in 63 households. Population grew 47.9% from 94 (2022) to 139 (2024). Median age 34.9 years. (7.5y younger than Lee County; 5.6y younger than South Carolina). Children under 18 are 36% of the population. Population is 76% Black and 24% White (non-Hispanic). The community is moderately diverse (Simpson index 0.49). 75% of households are family-led. County is losing 436 residents per year (2022-2023). County health: 49% adult obesity, 24% smoke.
- 2.2 people per household.
- 25% non-family households (singles, roommates).
Population & Trend
Population grew 47.9% from 94 (2022) to 139 (2024) — about 79.8× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~213 (extrapolated at 23.9%/yr trend). Census Bureau Vintage estimate: 346.
| Census data vintage | 2024 |
|---|---|
| Population | 16,531 people |
| Annual growth rate · Population change | 47.9% |
| Annual growth rate · Population (2022) | 94 |
| Annual growth rate · Population (2024) | 139 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 139 people |
| Population Estimate | 346 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 34.9y is 4.0 years younger than the U.S. median (38.9y). Children under 18 make up 36% — above the U.S. share of ~22%.
| Age Summary · Median age | 34.9 years (vs South Carolina 40.5y) |
|---|---|
| Age Summary · Children Pct | 36.0% |
| Age Summary · Character | young professional |
| Population under 18 | 50 |
| Median age | 34.9 years (vs South Carolina 40.5y) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Race, Ethnicity & Diversity
Of 139 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.49 (0 = single group, 1 = perfectly even distribution); this is read as moderately diverse.
| White residents | 41 |
|---|---|
| Black residents | 53 |
| Diversity Index · Diversity index (Simpson) | 49.2% |
| Diversity Index · Diversity label | moderately diverse |
| Diversity Index · Groups counted | 2 |
| Diversity Index · Largest group share | 56.4% |
| Black population | 76.3% |
| White (non-Hispanic) population | 23.7% |
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 (3)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS).
| Residents born in this state | 110 |
|---|---|
| Residents born in another state | 29 |
| Share born in this state | 79.1% |
| Share born in another state | 20.9% |
| Native-born U.S. citizens | 20.9% |
| Total foreign-born residents | 361 |
Households & Family Composition
63 households. Averaging 1.9 people each — smaller than the U.S. average of 2.5. 75% are family households — above the U.S. share of ~65%. Of 38 families, 16% are married couples with children.
| Children under 18 | 14 |
|---|---|
| Total families | 38 |
| Married couples with children | 6 |
| Average household size | 1.88 |
| Women who gave birth (past year) | 15.8% |
| Grandparents living with grandchildren | 941 |
| Grandparents responsible for grandchildren | 313 |
| Family households | 47 households |
| Households that are families | 74.6% |
| Total households | 63 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. The surrounding county is losing 436 residents per year on net (IRS migration data).
| Migration · People moving in (annual) | 12,481 |
|---|---|
| Migration · People moving out (annual) | 12,917 |
| Migration · Net migration (in − out) | -436 |
| 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 | 4 |
|---|---|
| Disability rate | 5.3% |
Other
| Congressional District · District | 5 |
|---|---|
| Congressional District · Formatted | SC-05 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 45,061 |
| Cdc Birth Rate · State Fips | 45 |
| Cdc Birth Rate · County Fips | 61 |
| Cdc Birth Rate · County | Lee |
| Cdc Birth Rate · Birth Rate | 32.6% |
| Cdc Birth Rate · Lower Ci | 26.00 |
| Cdc Birth Rate · Upper Ci | 40.40 |
| Cdc Mortality · Fips | 45,061 |
| Cdc Mortality · County | Lee County |
| Cdc Mortality · Urban Rural | Noncore |
| Cdc Mortality · Total Deaths 2020 2023 | 452 |
| Cdc Vaccination · Fips | 45,061 |
| Cdc Vaccination · County | Lee County |
| Cdc Vaccination · Dose1 Pop Pct | 58.3% |
| Cdc Vaccination · Series Complete Pct | 50.0% |
| Cdc Vaccination · Booster Pct | 44.6% |
| Cdc Vaccination · Population 2019 | 16,828 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 3.50 |
| Family Score · Schools | 5 |
| Family Score · Children Pct | 36.0% |
| Family Score · Rating | fair |
| Town Summary · Key Facts | population 139, booming, young professional, lower-income, blue collar |
| Town Summary · Population | 139 people |
| Town Summary · County | Lee County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade