Demographics & People — Mount Aetna, Maryland
Population Overview
| Population (Census) | 581 |
| Estimated 2026 | ~800 |
| Median Age | 48.5 |
| Total Households | 202 |
| Family Households | 170 |
| Average Household Size | 2.83 |
| Diversity Index | 0.4319 (moderately diverse) |
Race & Ethnicity
| White | 383 |
| Black or African American | 18 |
| Asian | 0 |
| Hispanic or Latino | 141 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 128 |
| Other groups | 114 |
| Hispanic: Hispanic or Latino | 85 |
| German | 74 |
| Hispanic: Mexican | 54 |
| Irish | 53 |
| English | 44 |
| European | 36 |
| Italian | 25 |
| Hispanic: Venezuelan | 18 |
Language
| English Only | 489 |
| Spanish | 45 |
| Population 5+ | 545 |
Veterans
| Veterans | 34 |
| Population 18+ | 377 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Mount Aetna, Maryland.