ZIP code 03257
Where is ZIP code 03257?
New London, New Hampshire
Merrimack County · Standard ZIP code
ZIP code 03257 belongs to New London, New Hampshire in Merrimack County. 03257 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area code 603. About 4,484 people live in the 03257 area, where the median household income is $107,000. The closest ZIP codes are 03233 (Elkins, 2.5 mi east), 03287 (Wilmot, 4.2 mi northeast) and 03751 (Georges Mills, 4.3 mi west).
| ZIP code | 03257 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | New London |
| State | New Hampshire (NH) |
| County | Merrimack County |
| Time zone | Eastern Time · now |
| Area code | 603 |
| Coordinates | 43.4145, -71.9857 map |
| 3-digit prefix | 032 |
Population and income in 03257
| Population | 4,484 · higher than 63% of New Hampshire ZIP codes |
|---|---|
| People per square mile | 190 · higher than 68% of New Hampshire ZIP codes |
| Median age | 50.9 years · higher than 69% of New Hampshire ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $107,000 · higher than 62% of New Hampshire ZIP codes |
| Income per person | $53,645 |
| Below the poverty line | 0.9% |
| Bachelor’s degree or higher | 65% of adults 25+ |
| Median home value | $559,000 · higher than 89% of New Hampshire ZIP codes |
| Median rent | $1,594 a month |
| Housing units | 2,409 |
| Households | 1,650 (2.2 people on average) |
| Owners / renters | 91% / 9.4% |
| Land area | 23.55 sq mi (plus 3.09 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 03257. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 03257
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 03233 | Elkins, NH | 2.5 mi E | Standard |
| 03287 | Wilmot, NH | 4.2 mi NE | Standard |
| 03751 | Georges Mills, NH | 4.3 mi W | PO Box only |
| 03260 | North Sutton, NH | 4.3 mi SE | PO Box only |
| 03782 | Sunapee, NH | 5.8 mi W | Standard |
| 03284 | Springfield, NH | 6.3 mi NW | Standard |
| 03255 | Newbury, NH | 6.5 mi S | Standard |
| 03754 | Guild, NH | 8.1 mi W | PO Box only |
| 03273 | South Sutton, NH | 8.1 mi S | PO Box only |
| 03272 | South Newbury, NH | 8.2 mi S | PO Box only |
| 03230 | Danbury, NH | 8.9 mi NE | Standard |
| 03753 | Grantham, NH | 9.9 mi NW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 03257 or measure the distance to another ZIP code.
How to address mail to 03257
123 MAIN ST
NEW LONDON NH 03257
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Sutton: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (03257-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 03257?
- 03257 is a New London, New Hampshire ZIP code.
- What county is 03257 in?
- ZIP code 03257 is in Merrimack County, New Hampshire.
- What time zone is ZIP code 03257 in?
- 03257 is in the Eastern Time zone (America/New_York).
- What area code is 03257?
- Phone numbers in ZIP code 03257 use area code 603.
- What is the population of ZIP code 03257?
- About 4,484 people live in ZIP code 03257, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 03257?
- The median household income in 03257 is $107,000 a year, higher than 62% of New Hampshire ZIP codes.
- What ZIP codes are near 03257?
- The nearest ZIP codes to 03257 are 03233 (Elkins, 2.5 miles), 03287 (Wilmot, 4.2 miles), 03751 (Georges Mills, 4.3 miles) and 03260 (North Sutton, 4.3 miles).