Residential delivery area · New Hampshire
ZIP Code 03455: Marlborough, NH
ZIP code 03455 uses the postal name Marlborough, New Hampshire and lies entirely in Cheshire County (Census 2020 ZIP-county file). About 2,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $69,395 (Census Bureau, ACS 2020-2024). By Census place, 7% of its land lies in Marlborough (a census-designated place); 93% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Marlborough · its only residential ZIP
- County
- Cheshire County
- Census places
- Marlborough census-designated place
- Micro area
- Keene, NH
- House district
- NH-2 119th Congress
- State
- New Hampshire
- Time zone
- Eastern
- Land area
- 23.8 sq mi · 94 people per sq mi
Where is ZIP code 03455?
03455 centers on 42.902°, -72.173° and covers 23.8 square miles of land plus 0.3 of water. It borders 7 ZIP codes: 03465, 03444, 03450, 03446, 03457, 03452, 03431.
The map draws ZIP code areas only. For the streets inside 03455, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 03455 compare with the rest of Cheshire County?
| Measure | 03455 | In Cheshire County | In NH |
|---|---|---|---|
| People (ACS 2020-2024) | 2,242 | 10th of 25 | 139th of 247 |
| Median household income | $69k | 10th of 11 | 141st of 158 |
| Median home value | $268k | 9th of 15 | 164th of 191 |
Its median household income is higher than in 46% of U.S. residential ZIP codes, and it is denser than 53% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 03455?
The 2020 Census counted 2,132 people in 03455; the ACS, which samples households over 2020-2024, estimates 2,242. Between the 2010 and 2020 censuses its population grew 2.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,242±368 (90% margin)
- 2020 Census count
- 2,132+2.2% since 2010 (2,086)
- Households
- 983
- Median age
- 46.9
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 03455?
Of the 2,242 people the ACS estimates in 03455, 23.2% are under 18 and 23.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.1%).
- Under 1823.2%
- 18 to 6453.2%
- 65 and older23.6%
- White, not Hispanic96.1%
- Other or two or more1.9%
- Hispanic or Latino1.1%
- Black, not Hispanic0.9%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 03455 earn?
Median household income is $69,395 (ACS 2020-2024), the 10th highest of the 11 ranked ZIP codes in Cheshire County. It is not measurably different from 2015-2019 ($87,283 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $69,395±$8,951
- Income per person
- $39,565
- Below the poverty line
- 13.0%
- Unemployed (of the labor force)
- 0.4%
- Adults 25+ with a bachelor's degree
- 39.6%
- Adjusted gross income per tax return, 2022
- $80,4281,150 returns; wages 58% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 03455?
FHFA's house price index for 03455, built from repeat sales and appraisals of the same homes, rose 102% from 2015 to 2025 and rose 59% from 2020 to 2025.
- Median home value (owners' estimate)
- $268,000
- Median gross rent
- $1,133
- Homes owned by their occupants
- 68.7%
- Housing units
- 1,076
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 03455?
45 business establishments had a location in this ZIP code in 2023, 5 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction10
- Professional, scientific, and technical services9
- Other services (except public administration)7
- Manufacturing6
- Retail trade4
- Accommodation and food services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 03455?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 03465 | Troy | 2,005 | $89k | 5.1 mi |
| 03444 | Dublin | 1,666 | $105k | 5.3 mi |
| 03450 | Harrisville | 885 | $103k | 6.2 mi |
| 03446 | Swanzey | 6,588 | $86k | 6.9 mi |
| 03457 | Nelson | 802 | $101k | 7.2 mi |
| 03452 | Jaffrey | 5,448 | $92k | 7.6 mi |
| 03431 | Keene | 25,065 | $80k | 8.0 mi |
| 03445 | Sullivan | 687 | $107k | 8.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.