ZIP code 03878
Where is ZIP code 03878?
Somersworth, New Hampshire
Strafford County · Standard ZIP code
ZIP code 03878 belongs to Somersworth, New Hampshire in Strafford County. 03878 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 codes 207 and 603. About 12,205 people live in the 03878 area, where the median household income is $75,136. The closest ZIP codes are 03869 (Rollinsford, 2.8 mi southeast), 03901 (Berwick, 2.8 mi north) and 03821 (Dover, 3.8 mi south).
| ZIP code | 03878 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Somersworth |
| State | New Hampshire (NH) |
| County | Strafford County |
| Time zone | Eastern Time · now |
| Area codes | 207, 603 |
| Coordinates | 43.2525, -70.8756 map |
| 3-digit prefix | 038 |
Population and income in 03878
| Population | 12,205 · higher than 88% of New Hampshire ZIP codes |
|---|---|
| People per square mile | 1,243 · higher than 95% of New Hampshire ZIP codes |
| Median age | 38.5 years · lower than 90% of New Hampshire ZIP codes |
| Men / women | 47% / 53% |
| Median household income | $75,136 · lower than 81% of New Hampshire ZIP codes |
| Income per person | $42,408 |
| Below the poverty line | 11% |
| Bachelor’s degree or higher | 31% of adults 25+ |
| Median home value | $317,900 · lower than 71% of New Hampshire ZIP codes |
| Median rent | $1,479 a month |
| Housing units | 5,690 |
| Households | 5,245 (2.32 people on average) |
| Owners / renters | 58% / 42% |
| Land area | 9.82 sq mi (plus 0.19 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 03878. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 03878
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 03869 | Rollinsford, NH | 2.8 mi SE | Standard |
| 03901 | Berwick, ME | 2.8 mi N | Standard |
| 03821 | Dover, NH | 3.8 mi S | PO Box only |
| 03822 | Dover, NH | 3.8 mi S | Unique |
| 03820 | Dover, NH | 4.4 mi S | Standard |
| 03908 | South Berwick, ME | 4.8 mi E | Standard |
| 03839 | Rochester, NH | 5.5 mi W | Standard |
| 03868 | Rochester, NH | 5.7 mi NW | Standard |
| 03866 | Rochester, NH | 6.2 mi NW | PO Box only |
| 03867 | Rochester, NH | 6.2 mi NW | Standard |
| 03823 | Madbury, NH | 6.4 mi SW | Standard |
| 03825 | Barrington, NH | 8.9 mi SW | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 03878 or measure the distance to another ZIP code.
How to address mail to 03878
123 MAIN ST
SOMERSWORTH NH 03878
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (03878-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 03878?
- 03878 is a Somersworth, New Hampshire ZIP code.
- What county is 03878 in?
- ZIP code 03878 is in Strafford County, New Hampshire.
- What time zone is ZIP code 03878 in?
- 03878 is in the Eastern Time zone (America/New_York).
- What area code is 03878?
- Phone numbers in ZIP code 03878 use area codes 207 and 603.
- What is the population of ZIP code 03878?
- About 12,205 people live in ZIP code 03878, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 03878?
- The median household income in 03878 is $75,136 a year, lower than 81% of New Hampshire ZIP codes.
- What ZIP codes are near 03878?
- The nearest ZIP codes to 03878 are 03869 (Rollinsford, 2.8 miles), 03901 (Berwick, 2.8 miles), 03821 (Dover, 3.8 miles) and 03822 (Dover, 3.8 miles).