Marathon is a town in Cortland County, New York, home to about 2,042 people across 25 square miles. Its ZIP code is 13803.
Homes sold for a median of $106 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Marathon; also Lapeer and Freetown
Each card is that ZIP code’s whole market, including any part outside Marathon. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Marathon’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Marathon well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Syracuse Hancock International Airport (SYR)46 miles away |
|---|---|
| Closer regional airport | Greater Binghamton/Edwin A Link field (BGM)17 miles away |
| Nearest city of 250,000+ | Buffalo, NY146 miles away |
| Nearest city of 1 million+ | New York, NY164 miles away |
Straight-line distances from the center of Marathon; 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.
Marathon had 2,038 residents in the 2020 census, down 7% since 2000.
It’s the 640th largest of 1,007 towns in New York by population.
Cortland County grew from 27,576 residents in 1900 to 46,809 in 2020.
Cortland 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 14°F. About 41.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Whitney Pt Dam, NY weather station (9 miles away).
14,353 jobs at 981 businesses in Cortland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
15 doctors and other health care providers list an office in Marathon.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Specialist doctors | 1 |
| Nurse practitioners and physician assistants | 10 |
| Physical and occupational therapists | 2 |
| 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 (1 nearby)
Libraries (1 nearby)
Counts are within about 3.5 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 Marathon Central School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| William Appleby Elementary SchoolMarathon | Pre-K–6 | 378 | Public | 0.2 mi |
| Marathon High SchoolMarathon | 7–12 | 295 | Public | 0.8 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Marathon Christian AcademyMarathon | K–6 | 5 | Baptist | 0.8 mi |
| Jennings Ck Amish SchoolMarathon | 1–8 | 19 | Amish | 2.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
Buying or selling around Marathon? Tell us what you need and when. No agents advertise here yet, so we’ll keep your request for up to 30 days and send it to local agents who join. No obligation, and you choose who to work with.
Loading map…
Shares ZIP codes with Lapeer, Freetown, Lisle, Harford, Virgil, Cortlandville and Willet.
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.