Demographics & People — St. Johns, Illinois
Population Overview
| Population (Census) | 134 |
|---|
| Estimated 2026 | ~400 |
|---|
| Median Age | 46.4 |
|---|
| Total Households | 68 |
|---|
| Family Households | 39 |
|---|
| Average Household Size | 1.97 |
|---|
| Diversity Index | 0.0761 (relatively homogeneous) |
|---|
Race & Ethnicity
| White | 122 |
|---|
| Black or African American | 0 |
|---|
| Asian | 4 |
|---|
| Hispanic or Latino | 1 |
|---|
Heritage & Ancestry
| Group | Count |
|---|
| Unclassified or not reported | 83 |
| German | 36 |
| Other groups | 26 |
| English | 21 |
| Irish | 20 |
| American | 11 |
| British | 3 |
| Lithuanian | 3 |
| European | 2 |
| Scottish | 2 |
Language
| English Only | 128 |
|---|
| Spanish | 0 |
|---|
| Population 5+ | 129 |
|---|
Veterans
| Veterans | 9 |
|---|
| Population 18+ | 137 |
|---|
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for St. Johns, Illinois.
