Demographics & People — Mamanasco Lake, Connecticut
Population Overview
| Population (Census) | 462 |
| Estimated 2026 | ~600 |
| Median Age | 40.8 |
| Total Households | 183 |
| Family Households | 130 |
| Average Household Size | 2.46 |
| Diversity Index | 0.0384 (relatively homogeneous) |
Race & Ethnicity
| White | 453 |
| Black or African American | 4 |
| Asian | 0 |
| Hispanic or Latino | 5 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 220 |
| English | 116 |
| Italian | 84 |
| Irish | 46 |
| Polish | 44 |
| German | 23 |
| Arab | 16 |
| Lebanese | 16 |
| Norwegian | 13 |
| Russian | 13 |
Language
| English Only | 427 |
| Spanish | 14 |
| Population 5+ | 441 |
Veterans
| Veterans | 0 |
| Population 18+ | 360 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mamanasco Lake, Connecticut.