Newmarket, NH ZIP Codes
ZIP code, county, time zone and coordinates of Newmarket, New Hampshire
The ZIP code of Newmarket, NH is 03857. Newmarket has 2 ZIP codes: 03857, 03856. It is in Rockingham County.
Mailing address format for Newmarket
John Smith 123 Main St NEWMARKET NH 03857 USA
USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.
All ZIP codes in Newmarket
| ZIP code | Population | Area | |
|---|---|---|---|
| 03857 | — | 12.6 sq mi | Main |
| 03856 | — | 7.1 sq mi |
ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.
Where is Newmarket? Location, county and time zone
- State
- New Hampshire
- County
- Rockingham County
- GPS coordinates
- 43.07091, -70.94694
- Elevation
- 39 ft (12 m)
- Time zone
- America/New YorkEST · UTC-05:00
- Population
- 9,430
Map of Newmarket, NH 03857
Tap a place on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Newmarket Street View
Drag to look around. Tap any place on the map above, or the "Street View" button on a card, to jump there.
Open in Google Maps ›ZIP codes near Newmarket
Newmarket ZIP code: FAQ
What is the ZIP code for Newmarket, NH?
The main ZIP code for Newmarket, NH is 03857. All ZIP codes: 03857, 03856.
How many ZIP codes does Newmarket have?
Newmarket has 2 ZIP codes.
What county is Newmarket, NH in?
Newmarket is in Rockingham County, New Hampshire.
What time zone is Newmarket in?
Newmarket is in the America/New York time zone (EST, UTC-05:00 right now).
What are the coordinates of Newmarket?
Latitude 43.07091, longitude -70.94694.
Last updated: