Demographics & People — Groton, Connecticut
Population Overview
| Population (Census) | 9,343 |
| Estimated 2026 | ~9,800 |
| Median Age | 39.0 |
| Total Households | 4,695 |
| Family Households | 2,549 |
| Average Household Size | 1.99 |
| Diversity Index | 0.4807 (moderately diverse) |
Race & Ethnicity
| White | 6,494 |
| Black or African American | 851 |
| Asian | 509 |
| Hispanic or Latino | 1,495 |
Heritage & Ancestry
| Group | Count |
| Other groups | 2,453 |
| Unclassified or not reported | 1,940 |
| Irish | 1,561 |
| Hispanic: Hispanic or Latino | 1,241 |
| English | 1,216 |
| Italian | 1,084 |
| German | 1,069 |
| Polish | 630 |
| Hispanic: Puerto Rican | 604 |
| French (except Basque) | 371 |
Language
| English Only | 8,055 |
| Spanish | 447 |
| Population 5+ | 9,031 |
Veterans
| Veterans | 559 |
| Population 18+ | 7,602 |
Commuting
| Mean Commute Time | 17.5 minutes |
| Work from Home | 4.8% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Groton, Connecticut.