ZIP 21045 · Columbia
Who lives in ZIP code 21045 (Columbia, MD): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Columbia, MD · Howard County
uszips 2026
People40,034
Median age39.6
Household income$118,563
Home value$455,400
Median rent$1,777/mo
Poverty8.6%
College degree+56.6%
Commute27 min
Place
- Metro area
- Baltimore-Columbia-Towson, MD
- Wider region
- Washington-Baltimore-Arlington, DC-MD-VA-WV-PA
- Time zone
- Eastern
- Density
- 1,594 / sq mi
- Housing units
- 15,414
County
Share of the ZIP's people in each county.
Age mix
18.3% are 65 or older; 77.3% are adults.
Household income
57.7% of households earn $100K+. Median per person: $59,396.
Education (adults 25+)
56.3% of degrees are in STEM fields.
Race
12.8% Hispanic or Latino (of any race).
Households & family
- Married
- 47.2%
- Never married
- 34.1%
- Divorced
- 13.8%
- Widowed
- 5.0%
- Family size
- 3.16
- Dual-income families
- 58.1%
Housing
- Own their home
- 68.3%
- Rent burden
- 37.1%
- Men / women
- 48% / 52%
Work
- In labor force
- 70.1%
- Unemployment
- 5.4%
- Self-employed
- 13.5%
- Farmers
- 0.0%
Community
- Charitable givers
- 43.0%
- Veterans
- 8.0%
- With a disability
- 12.5%
- No health insurance
- 6.0%
- Limited English
- 5.8%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.