Clayton is a town in Jefferson County, New York, home to about 4,693 people across 83 square miles. Its ZIP codes are 13624 and 13632, and parts of 13622 and 13656 are in Clayton too.
Homes sold for a median of $206 per square foot across 2 ZIP codes in the three months ending August 2026, and 0 of 2 were seller’s markets.
Mostly Clayton; also Cape Vincent and Orleans
Mostly Lyme; part is in Clayton
Mostly Orleans; part is in Clayton
Each card is that ZIP code’s whole market, including any part outside Clayton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Clayton’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Syracuse Hancock International Airport (SYR)71 miles away |
|---|---|
| Closer regional airport | Watertown International Airport (ART)11 miles away |
| Nearest city of 250,000+ | Buffalo, NY165 miles away |
| Nearest city of 1 million+ | New York, NY263 miles away |
Straight-line distances from the center of Clayton; 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.
Clayton had 4,770 residents in the 2020 census, down 1% since 2000.
It’s the 381st largest of 1,007 towns in New York by population.
Jefferson County grew from 76,748 residents in 1900 to 116,721 in 2020.
Jefferson County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 79°F in summer, and winter lows average 10°F. About 37.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Watertown Intl Ap, NY weather station (11 miles away).
28,622 jobs at 2,348 businesses in Jefferson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
19 doctors and other health care providers list an office in Clayton’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 5 |
|---|---|
| Dentists | 5 |
| Nurse practitioners and physician assistants | 5 |
| Physical and occupational therapists | 3 |
| Chiropractors | 1 |
| Pharmacies | 1 |
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.
Pharmacies
Libraries (2 nearby)
Counts are within about 6 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.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Thousand Islands Central School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Guardino Elementary SchoolClayton | Pre-K–5 | 243 | Public | 6.5 mi |
| Thousand Islands Middle SchoolClayton | 6–8 | 185 | Public | 8.0 mi |
| Thousand Islands High SchoolClayton | 9–12 | 262 | Public | 8.0 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 Orleans, Lyme, Alexandria, Brownville, Cape Vincent and Pamelia.
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.