ZIP 21791 · Union Bridge
Who lives in ZIP code 21791 (Union Bridge, MD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Union Bridge, MD · Frederick County
uszips 2026
People5,340
Median age37.7
Household income$93,015
Home value$379,570
Median rent$1,457/mo
Poverty5.1%
College degree+26.7%
Commute37 min
Place
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- Wider region
- Washington-Baltimore-Arlington, DC-MD-VA-WV-PA
- Metro division
- Frederick-Gaithersburg-Bethesda, MD
- Time zone
- Eastern
- Density
- 45 / sq mi
- Housing units
- 1,968
Spans 2 counties
Share of the ZIP's people in each county.
Age mix
19.2% are 65 or older; 75.5% are adults.
Household income
44.9% of households earn $100K+. Median per person: $48,170.
Education (adults 25+)
44.1% of degrees are in STEM fields.
Race
1.1% Hispanic or Latino (of any race).
Households & family
- Married
- 55.2%
- Never married
- 31.1%
- Divorced
- 10.4%
- Widowed
- 3.4%
- Family size
- 3.19
- Dual-income families
- 51.5%
Housing
- Own their home
- 81.7%
- Rent burden
- 33.9%
- Men / women
- 51% / 49%
Work
- In labor force
- 63.7%
- Unemployment
- 2.0%
- Self-employed
- 13.1%
- Farmers
- 4.5%
Community
- Charitable givers
- 35.1%
- Veterans
- 12.6%
- With a disability
- 13.8%
- No health insurance
- 10.6%
- Limited English
- 0.2%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.