ZIP Code 03858: Newton, NH
County: Rockingham
Coordinates: 42.86780, -71.04200
ZIP Type: Standard
Time Zone: Eastern Time (ET)
Get a reliable snapshot of the Newton, NH postal area 03858. This page summarizes county, coordinates, and local facts to help with services and location research.
| Primary City | Newton |
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| ZIP Code | 03858 |
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| County | Rockingham |
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| State | NH |
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| Latitude / Longitude | 42.86780, -71.04200 |
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| ZIP Type | Standard |
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| Time Zone | Eastern Time (ET) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 03858 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 03858 are listed as 42.86780 / -71.04200, useful for GPS and service checks in and around Newton, NH.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 03858 for mail delivery and general location reference in
Rockingham,
NH.
Some addresses near Newton may share this ZIP due to delivery routing and local service areas.
Related ZIP Codes (Nearby)
Explore other postal codes near Newton within NH.
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Frequently Asked Questions
What is the primary city for ZIP code 03858?
The primary city for this ZIP code is Newton, located in NH.
In which county is 03858 located?
ZIP code 03858 is situated within Rockingham, NH.
What are the coordinates for 03858?
The approximate center point is 42.86780 (Latitude) and -71.04200 (Longitude).
Is ZIP code 03858 active?
This page lists ZIP 03858 as Listed based on the latest refresh date shown above.
Does ZIP 03858 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08