Demographics & People — Lewisville, Idaho
Population Overview
| Population (Census) | 489 |
| Estimated 2026 | ~400 |
| Median Age | 39.9 |
| Total Households | 147 |
| Family Households | 113 |
| Average Household Size | 3.33 |
| Diversity Index | 0.176 (relatively homogeneous) |
Race & Ethnicity
| White | 435 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 47 |
Heritage & Ancestry
| Group | Count |
| English | 143 |
| Unclassified or not reported | 101 |
| Other groups | 79 |
| American | 44 |
| Scandinavian | 42 |
| Hispanic: Mexican | 39 |
| Hispanic: Hispanic or Latino | 39 |
| German | 24 |
| Dutch | 22 |
| Scottish | 19 |
Language
| English Only | 391 |
| Spanish | 52 |
| Population 5+ | 450 |
Veterans
| Veterans | 20 |
| Population 18+ | 322 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Lewisville, Idaho.