ZIP 21771 · Mount Airy
Who lives in ZIP code 21771 (Mount Airy, MD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Mount Airy, MD · Frederick County
uszips 2026
People33,031
Median age40.9
Household income$157,302
Home value$560,866
Median rent$2,252/mo
Poverty3.1%
College degree+48.8%
Commute36 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
- 143 / sq mi
- Housing units
- 11,226
Spans 4 counties
Share of the ZIP's people in each county.
Age mix
15.6% are 65 or older; 75.8% are adults.
Household income
71.5% of households earn $100K+. Median per person: $68,396.
Education (adults 25+)
49.7% of degrees are in STEM fields.
Race
8.3% Hispanic or Latino (of any race).
Households & family
- Married
- 61.2%
- Never married
- 24.3%
- Divorced
- 9.5%
- Widowed
- 5.0%
- Family size
- 3.27
- Dual-income families
- 68.1%
Housing
- Own their home
- 94.0%
- Rent burden
- 29.8%
- Men / women
- 51% / 49%
Work
- In labor force
- 72.1%
- Unemployment
- 4.3%
- Self-employed
- 13.3%
- Farmers
- 1.0%
Community
- Charitable givers
- 47.5%
- Veterans
- 6.8%
- With a disability
- 10.2%
- No health insurance
- 3.1%
- Limited English
- 2.0%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.