ZIP code 03854
Where is ZIP code 03854?
New Castle, New Hampshire
Rockingham County · PO Box only ZIP code
ZIP code 03854 belongs to New Castle, New Hampshire in Rockingham County. 03854 is a PO Box only ZIP code: it is used for post office boxes at the New Castle post office, not for street addresses. It is in the Eastern Time zone and uses area codes 207 and 603. About 827 people live in the 03854 area, where the median household income is $176,953. The closest ZIP codes are 03904 (Kittery, 2 mi northwest), 03905 (Kittery Point, 2.1 mi north) and 03802 (Portsmouth, 2.2 mi west).
| ZIP code | 03854 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | New Castle |
| State | New Hampshire (NH) |
| County | Rockingham County |
| Time zone | Eastern Time · now |
| Area codes | 207, 603 |
| Coordinates | 43.0681, -70.7199 map |
| 3-digit prefix | 038 |
Population and income in 03854
| Population | 827 · lower than 86% of New Hampshire ZIP codes |
|---|---|
| People per square mile | 1,022 · higher than 94% of New Hampshire ZIP codes |
| Median age | 62.8 years · higher than 96% of New Hampshire ZIP codes |
| Men / women | 51% / 49% |
| Median household income | $176,953 · higher than 98% of New Hampshire ZIP codes |
| Income per person | $125,291 |
| Below the poverty line | 4.6% |
| Bachelor’s degree or higher | 69% of adults 25+ |
| Median home value | $1,701,300 · higher than 99% of New Hampshire ZIP codes |
| Median rent | $3,501 a month |
| Housing units | 466 |
| Households | 401 (2.06 people on average) |
| Owners / renters | 93% / 7.0% |
| Land area | 0.81 sq mi (plus 1.46 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 03854. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 03854
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 03904 | Kittery, ME | 2 mi NW | Standard |
| 03905 | Kittery Point, ME | 2.1 mi N | Standard |
| 03802 | Portsmouth, NH | 2.2 mi W | PO Box only |
| 03803 | Portsmouth, NH | 2.2 mi W | Unique |
| 03804 | Portsmouth, NH | 2.2 mi W | PO Box only |
| 03801 | Portsmouth, NH | 4.3 mi W | Standard |
| 03870 | Rye, NH | 4.7 mi SW | Standard |
| 03903 | Eliot, ME | 5.4 mi NW | Standard |
| 03911 | York Harbor, ME | 6 mi NE | PO Box only |
| 03871 | Rye Beach, NH | 6.6 mi SW | PO Box only |
| 03909 | York, ME | 6.7 mi NE | Standard |
| 03840 | Greenland, NH | 6.8 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 03854 or measure the distance to another ZIP code.
How to address mail to 03854
PO BOX 123
NEW CASTLE NH 03854
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Newcastle: USPS doesn’t recognize it as the city for this ZIP code. Adding the 4-digit ZIP+4 code (03854-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 03854?
- 03854 is a New Castle, New Hampshire ZIP code.
- What county is 03854 in?
- ZIP code 03854 is in Rockingham County, New Hampshire.
- What time zone is ZIP code 03854 in?
- 03854 is in the Eastern Time zone (America/New_York).
- What area code is 03854?
- Phone numbers in ZIP code 03854 use area codes 207 and 603.
- What is the population of ZIP code 03854?
- About 827 people live in ZIP code 03854, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 03854?
- The median household income in 03854 is $176,953 a year, higher than 98% of New Hampshire ZIP codes.
- Can I use 03854 for a street address?
- No. 03854 is only for PO Boxes. Street addresses in New Castle use another ZIP code.
- What ZIP codes are near 03854?
- The nearest ZIP codes to 03854 are 03904 (Kittery, 2 miles), 03905 (Kittery Point, 2.1 miles), 03802 (Portsmouth, 2.2 miles) and 03803 (Portsmouth, 2.2 miles).