ZIP 03857 · Newmarket
Who lives in ZIP code 03857 (Newmarket, NH): age, income, housing, education and work.
Source: uszips 2026 (ACS-based ZIP file)
2026 ZIP profile
Newmarket, NH · Rockingham County
uszips 2026
People9,463
Median age41.2
Household income$100,845
Home value$455,608
Median rent$1,671/mo
Poverty4.6%
College degree+49.8%
Commute28 min
Place
- Metro area
- Boston-Cambridge-Newton, MA-NH
- Wider region
- Boston-Worcester-Providence, MA-RI-NH
- Metro division
- Rockingham County-Strafford County, NH
- Time zone
- Eastern
- Density
- 290 / sq mi
- Housing units
- 4,345
County
Share of the ZIP's people in each county.
Age mix
16.1% are 65 or older; 84.4% are adults.
Household income
50.3% of households earn $100K+. Median per person: $55,381.
Education (adults 25+)
47.6% of degrees are in STEM fields.
Race
1.4% Hispanic or Latino (of any race).
Households & family
- Married
- 52.1%
- Never married
- 33.7%
- Divorced
- 10.8%
- Widowed
- 3.4%
- Family size
- 2.73
- Dual-income families
- 63.6%
Housing
- Own their home
- 52.9%
- Rent burden
- 27.4%
- Men / women
- 49% / 51%
Work
- In labor force
- 75.4%
- Unemployment
- 1.0%
- Self-employed
- —
- Farmers
- —
Community
- Charitable givers
- —
- Veterans
- 5.0%
- With a disability
- 9.6%
- No health insurance
- 3.9%
- Limited English
- 0.3%
Source: uszips 2026 (ACS-based ZIP file). Shares are percentages of people, households or adults as the measure implies.