Demographics & People — Marine on St. Croix, Minnesota
Population Overview
| Population (Census) | 712 |
| Estimated 2026 | ~800 |
| Median Age | 57.3 |
| Total Households | 308 |
| Family Households | 216 |
| Average Household Size | 2.31 |
| Diversity Index | 0.034 (relatively homogeneous) |
Race & Ethnicity
| White | 684 |
| Black or African American | 0 |
| Asian | 10 |
| Hispanic or Latino | 2 |
Heritage & Ancestry
| Group | Count |
| German | 272 |
| Irish | 124 |
| Swedish | 122 |
| Norwegian | 99 |
| English | 88 |
| French (except Basque) | 58 |
| Unclassified or not reported | 54 |
| European | 42 |
| Other groups | 41 |
| Polish | 37 |
Language
| English Only | 663 |
| Spanish | 6 |
| Population 5+ | 690 |
Veterans
| Veterans | 40 |
| Population 18+ | 585 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Marine on St. Croix, Minnesota.