Demographics & People — Oak Grove, Illinois
Population Overview
| Population (Census) | 335 |
|---|
| Estimated 2026 | ~200 |
|---|
| Median Age | 58.8 |
|---|
| Total Households | 188 |
|---|
| Family Households | 110 |
|---|
| Average Household Size | 1.78 |
|---|
| Diversity Index | 0.0641 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 323 |
|---|
| Black or African American | 0 |
|---|
| Asian | 3 |
|---|
| Hispanic or Latino | 8 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| German | 98 |
| Unclassified or not reported | 96 |
| Other groups | 66 |
| Scotch-Irish | 40 |
| Irish | 36 |
| American | 32 |
| English | 30 |
| Scottish | 23 |
| Hispanic: Mexican | 15 |
| Hispanic: Hispanic or Latino | 15 |
Language
| English Only | 303 |
|---|
| Spanish | 4 |
|---|
| Population 5+ | 312 |
|---|
Veterans
| Veterans | 31 |
|---|
| Population 18+ | 309 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Oak Grove, Illinois.
