Cortlandt is a town in Westchester County, New York, home to about 41,794 people across 39 square miles. Its ZIP codes are 10511, 10517, 10520, 10548, 10567 and 10596, and parts of 10537 and 10547 are in Cortlandt too.
Homes sold for a median of $403 per square foot across 6 ZIP codes in the three months ending August 2026, and 5 of 6 were seller’s markets.
All in Cortlandt
All in Cortlandt
Mostly Cortlandt; also Yorktown
All in Cortlandt
All in Cortlandt
All in Cortlandt
Mostly Putnam Valley; part is in Cortlandt
Mostly Yorktown; part is in Cortlandt
Each card is that ZIP code’s whole market, including any part outside Cortlandt. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Cortlandt’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | LaGuardia Airport (LGA)33 miles away |
|---|---|
| Closer regional airport | Westchester County Airport (HPN)17 miles away |
| Nearest city of 250,000+ | Jersey City, NJ39 miles away |
| Nearest city of 1 million+ | New York, NY41 miles away |
Straight-line distances from the center of Cortlandt; 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.
Cortlandt had 42,545 residents in the 2020 census, up 11% since 2000.
It’s the 49th largest of 1,007 towns in New York by population.
Westchester County grew from 184,257 residents in 1900 to 1,004,457 in 2020.
Westchester County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 17°F. About 50.3 inches of rain and melted snow fall in a typical year, with about 40 inches of snow.
Source: NOAA 1991–2020 climate normals, Yorktown Hts 1w, NY weather station (5 miles away).
389,560 jobs at 31,174 businesses in Westchester County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
652 doctors and other health care providers list an office in Cortlandt’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 47 |
|---|---|
| Specialist doctors | 129 |
| Dentists | 30 |
| Nurse practitioners and physician assistants | 109 |
| Mental health providers | 215 |
| Physical and occupational therapists | 76 |
| Optometrists | 37 |
| Chiropractors | 9 |
| Pharmacies | 10 |
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 (26 nearby)
Grocery stores (6 nearby)
Pharmacies (4 nearby)
Libraries (2 nearby)
Museums (3 nearby)
Theaters and performance venues
Counts are within about 4 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.
Established in 1788.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Hendrick Hudson Central School District, Lakeland Central School District, Croton-Harmon Union Free School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Buchanan-Verplanck Elementary SchoolBuchanan | Pre-K–2 | 224 | Public | 2.6 mi |
| Furnace Woods Elementary SchoolCortlandt Manor | Pre-K–2 | 214 | Public | 0.4 mi |
| Lincoln Titus Elementary SchoolCrompond | Pre-K–5 | 374 | Public | 3.3 mi |
| Carrie E Tompkins SchoolCroton On Hudson | K–4 | 585 | Public | 3.7 mi |
| Frank G Lindsey Elementary SchoolMontrose | 3–5 | 472 | Public | 2.1 mi |
| Pierre Van Cortlandt SchoolCroton On Hudson | 5–8 | 463 | Public | 3.9 mi |
| Blue Mountain Middle SchoolCortlandt Manor | 6–8 | 534 | Public | 0.6 mi |
| Croton-Harmon High SchoolCroton On Hudson | 9–12 | 507 | Public | 3.8 mi |
| Hendrick Hudson High SchoolMontrose | 9–12 | 729 | Public | 2.0 mi |
| Walter Panas High SchoolCortlandt Manor | 9–12 | 845 | Public | 2.4 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St Columbanus SchoolCortlandt Manor | Pre-K–5 | 64 | Roman Catholic | 3.6 mi |
| Holy Name of Mary Montessori SchoolCroton On Hudson | K | 4 | Roman Catholic | 3.7 mi |
| Ohr Hameir Seminary - Tifereth Israel High SchoolCourtland Manor | 9–12 | 128 | Jewish | 0.7 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.
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Shares ZIP codes with Yorktown and Putnam Valley.
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.