Demographics & People — Lewistown, Illinois
Population Overview
| Population (Census) | 1,828 |
| Estimated 2026 | ~1,700 |
| Median Age | 46.1 |
| Total Households | 924 |
| Family Households | 487 |
| Average Household Size | 1.92 |
| Diversity Index | 0.0984 (relatively homogeneous) |
Race & Ethnicity
| White | 1,708 |
| Black or African American | 16 |
| Asian | 56 |
| Hispanic or Latino | 20 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 666 |
| English | 354 |
| German | 335 |
| Irish | 279 |
| Other groups | 252 |
| American | 208 |
| French (except Basque) | 100 |
| Dutch | 72 |
| Swedish | 34 |
| Hispanic: Hispanic or Latino | 29 |
Language
| English Only | 1,648 |
| Spanish | 6 |
| Population 5+ | 1,702 |
Veterans
| Veterans | 102 |
| Population 18+ | 1,442 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lewistown, Illinois.