← Look up another ZIP code · All towns in New Hampshire
ZIP code 03857
Newmarket, NH · Rockingham County
About ZIP code 03857
- ZIP code 03857 is in Newmarket, Rockingham County, New Hampshire.
- About 9,463 people live in it, which is 290.1 people per square mile.
- Time zone: Eastern Standard Time.
- The middle of the ZIP code is at 43.069, -70.952.
A ZIP code is a mail delivery area, not a town border, and one ZIP code can cover parts of several towns. To check a single address, use the US Postal Service lookup.
Newmarket, NH
ZIP code 03857 is the post office name for Newmarket, Rockingham County, NH. 9,463 people live in Newmarket. Typical household income is $100,845. A typical home costs $455,000.
- Stronger than most towns on: Safety, State taxes and Long, healthy lives.
- Weaker than most towns on: Property taxes, Cost of living and Pleasant weather for being outdoors.
Nearby ZIP codes
- 03856 Newfields · 2,023 people
- 03824 Durham · 15,080 people
- 03861 Lee · 4,576 people
- 03885 Stratham · 7,754 people
- 03840 Greenland · 4,106 people
- 03042 Epping · 7,430 people
- 03833 Exeter · 22,817 people
- 03823 Madbury · 2,203 people
ZIP code list from SimpleMaps US Zips. Population is a US Census Bureau estimate. These are estimates, so check official sources before you decide.