Demographics & People — Tecumseh, Kansas
Population Overview
| Population (Census) | 339 |
| Estimated 2026 | ~900 |
| Median Age | 34.3 |
| Total Households | 170 |
| Family Households | 85 |
| Average Household Size | 1.99 |
| Diversity Index | 0.0697 (relatively homogeneous) |
Race & Ethnicity
| White | 293 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 11 |
Heritage & Ancestry
| Group | Count |
| Irish | 157 |
| German | 121 |
| English | 53 |
| French (except Basque) | 40 |
| Unclassified or not reported | 30 |
| European | 20 |
| Other groups | 15 |
| Italian | 11 |
| Scotch-Irish | 5 |
Language
| English Only | 312 |
| Spanish | 0 |
| Population 5+ | 312 |
Veterans
| Veterans | 43 |
| Population 18+ | 296 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Tecumseh, Kansas.