Residential delivery area · New Hampshire
ZIP Code 03602: Alstead, NH
ZIP code 03602 uses the postal name Alstead, New Hampshire and lies mostly in Cheshire County (63% of its land) with the rest in Sullivan County (Census 2020 ZIP-county file). About 2,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $70,455 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Alstead · its only residential ZIP
- County
- Cheshire County (63%); Sullivan County (37%)
- Micro area
- Keene, NH
- House district
- NH-2 119th Congress
- State
- New Hampshire
- Time zone
- Eastern
- Land area
- 61.4 sq mi · 39 people per sq mi
Where is ZIP code 03602?
03602 centers on 43.141°, -72.348° and covers 61.4 square miles of land plus 0.6 of water. It borders 8 ZIP codes: 03604, 03608, 03607, 03456, 03601, 03603, 03448, 03431.
The map draws ZIP code areas only. For the streets inside 03602, 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 03602 compare with the rest of Cheshire County?
| Measure | 03602 | In Cheshire County | In NH |
|---|---|---|---|
| People (ACS 2020-2024) | 2,381 | 8th of 25 | 134th of 247 |
| Median household income | $71k | 9th of 11 | 140th of 158 |
| Median home value | $279k | 8th of 15 | 159th of 191 |
Its median household income is higher than in 47% of U.S. residential ZIP codes, and it is denser than 37% 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 03602?
The 2020 Census counted 2,599 people in 03602; the ACS, which samples households over 2020-2024, estimates 2,381. Between the 2010 and 2020 censuses its population fell 2.1% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,381±279 (90% margin)
- 2020 Census count
- 2,599−2.1% since 2010 (2,654)
- Households
- 1,024
- Median age
- 54.9
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 03602?
Of the 2,381 people the ACS estimates in 03602, 15.9% are under 18 and 28.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.1%).
- Under 1815.9%
- 18 to 6455.7%
- 65 and older28.3%
- White, not Hispanic96.1%
- Other or two or more2.7%
- Hispanic or Latino0.7%
- Asian, not Hispanic0.3%
- Black, not Hispanic0.2%
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 03602 earn?
Median household income is $70,455 (ACS 2020-2024), the 9th highest of the 11 ranked ZIP codes in Cheshire County. It is not measurably different from 2015-2019 ($77,673 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $70,455±$8,818
- Income per person
- $52,282
- Below the poverty line
- 7.3%
- Unemployed (of the labor force)
- 3.1%
- Adults 25+ with a bachelor's degree
- 26.7%
- Adjusted gross income per tax return, 2022
- $76,6771,380 returns; wages 63% 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 03602?
FHFA's house price index for 03602, built from repeat sales and appraisals of the same homes, rose 81% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved −0.1% in 2025.
- Median home value (owners' estimate)
- $279,400
- Median gross rent
- $828
- Homes owned by their occupants
- 80.3%
- Housing units
- 1,347
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 03602?
61 business establishments had a location in this ZIP code in 2023, 6 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction16
- Retail trade9
- Other services (except public administration)8
- Manufacturing7
- Wholesale trade5
- Administrative and support and waste management and remediation 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 03602?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 03604 | Drewsville | 0 | – | 2.2 mi |
| 03608 | Walpole | 3,167 | $88k | 5.1 mi |
| 03607 | South Acworth | 368 | $84k | 5.8 mi |
| 03456 | Marlow | 855 | $111k | 7.0 mi |
| 03601 | Acworth | 382 | $81k | 7.5 mi |
| 03603 | Charlestown | 5,238 | $57k | 7.5 mi |
| 03448 | Gilsum | 716 | $80k | 8.1 mi |
| 03431 | Keene | 25,065 | $80k | 12.1 mi |
| 03609 | North Walpole | 523 | $72k | 5.0 mi (near) |
| 05158 | Westminster, VT | 1,151 | $72k | 6.7 mi (near) |
| 05101 | Bellows Falls, VT | 4,165 | $70k | 7.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.