ZIP 20878 · Gaithersburg
Who lives in ZIP code 20878 (Gaithersburg, MD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Gaithersburg, MD · Montgomery County
uszips 2026
People66,115
Median age41.4
Household income$144,313
Home value$720,942
Median rent$2,226/mo
Poverty5.2%
College degree+70.3%
Commute29 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
- 1,248 / sq mi
- Housing units
- 24,237
County
Share of the ZIP's people in each county.
Age mix
16.0% are 65 or older; 78.0% are adults.
Household income
65.2% of households earn $100K+. Median per person: $73,136.
Education (adults 25+)
60.9% of degrees are in STEM fields.
Race
14.2% Hispanic or Latino (of any race).
Households & family
- Married
- 57.9%
- Never married
- 29.7%
- Divorced
- 8.7%
- Widowed
- 3.7%
- Family size
- 3.20
- Dual-income families
- 63.2%
Housing
- Own their home
- 69.2%
- Rent burden
- 27.6%
- Men / women
- 48% / 52%
Work
- In labor force
- 71.4%
- Unemployment
- 4.0%
- Self-employed
- 19.0%
- Farmers
- 0.1%
Community
- Charitable givers
- 45.8%
- Veterans
- 2.8%
- With a disability
- 7.5%
- No health insurance
- 6.4%
- Limited English
- 7.2%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.