Demographics & People — Harbor Island, South Carolina
Population Overview
| Population (Census) | 310 |
|---|
| Estimated 2026 | ~300 |
|---|
| Median Age | 69.6 |
|---|
| Total Households | 146 |
|---|
| Family Households | 117 |
|---|
| Average Household Size | 2.12 |
|---|
| Diversity Index | 0.0 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 301 |
|---|
| Black or African American | 0 |
|---|
| Asian | 0 |
|---|
| Hispanic or Latino | 0 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 127 |
| Swedish | 58 |
| Scottish | 58 |
| German | 30 |
| Irish | 28 |
| English | 20 |
| Lithuanian | 10 |
| Eastern European | 8 |
| Canadian | 4 |
| Danish | 4 |
Language
| English Only | 310 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 310 |
|---|
Veterans
| Veterans | 120 |
|---|
| Population 18+ | 277 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Harbor Island, South Carolina.
