Langdon is a town in Sullivan County, New Hampshire, home to about 805 people across 16 square miles. It has no ZIP code of its own: it’s part of 03602.
Homes sold for a median of $216 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Alstead; part is in Langdon
Each card is that ZIP code’s whole market, including any part outside Langdon. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Langdon’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Albany International Airport (ALB)79 miles away |
|---|---|
| Closer regional airport | Lebanon Municipal Airport (LEB)35 miles away |
| Nearest city of 250,000+ | Boston, MA86 miles away |
| Nearest city of 1 million+ | New York, NY189 miles away |
Straight-line distances from the center of Langdon; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Langdon had 651 residents in the 2020 census, up 11% since 2000.
It’s the 202nd largest of 242 towns in New Hampshire by population.
Sullivan County grew from 18,009 residents in 1900 to 43,063 in 2020.
Sullivan County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 81°F in summer, and winter lows average 13°F. About 47.1 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Walpole 2s Nepp, NH weather station (8 miles away).
12,071 jobs at 956 businesses in Sullivan County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
11 doctors and other health care providers list an office in Langdon.
Nearest hospitals
Providers with an office here
| Mental health providers | 8 |
|---|---|
| Physical and occupational therapists | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Grocery stores
Pharmacies
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 3 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Fall Mountain Regional School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Alstead Primary SchoolAlstead | Pre-K–4 | 69 | Public | 2.1 mi |
| Fall Mountain Regional -Pre School ProgramLangdon | Pre-K | 15 | Public | 4.5 mi |
| Sarah Porter SchoolLangdon | 1–4 | 19 | Public | 3.8 mi |
| Vilas Elementary SchoolAlstead | 5–8 | 108 | Public | 2.1 mi |
| Fall Mountain Regional High SchoolLangdon | 9–12 | 479 | Public | 4.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Alstead and Acworth.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.