ZIP 01821 · Billerica
Who lives in ZIP code 01821 (Billerica, MA): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Billerica, MA · Middlesex County
uszips 2026
People30,143
Median age44.3
Household income$149,042
Home value$614,850
Median rent$2,346/mo
Poverty5.3%
College degree+40.1%
Commute26 min
Place
- Metro area
- Boston-Cambridge-Newton, MA-NH
- Wider region
- Boston-Worcester-Providence, MA-RI-NH
- Metro division
- Cambridge-Newton-Framingham, MA
- Time zone
- Eastern
- Density
- 701 / sq mi
- Housing units
- 11,312
County
Share of the ZIP's people in each county.
Age mix
19.3% are 65 or older; 82.6% are adults.
Household income
67.4% of households earn $100K+. Median per person: $59,285.
Education (adults 25+)
51.8% of degrees are in STEM fields.
Race
3.5% Hispanic or Latino (of any race).
Households & family
- Married
- 52.6%
- Never married
- 31.7%
- Divorced
- 10.5%
- Widowed
- 5.2%
- Family size
- 3.04
- Dual-income families
- 67.6%
Housing
- Own their home
- 82.2%
- Rent burden
- 25.0%
- Men / women
- 49% / 51%
Work
- In labor force
- 71.9%
- Unemployment
- 3.0%
- Self-employed
- —
- Farmers
- —
Community
- Charitable givers
- —
- Veterans
- 4.8%
- With a disability
- 11.5%
- No health insurance
- 1.7%
- Limited English
- 2.9%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.