Cortland County GIS Maps
Cortland County, New York, has 46,809 residents across 22,577 parcels and covers 498.8 square miles. The population declined 5.1% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Cortland County is 36023.
Cortland is the county's largest population center. Cortland County also includes 11 zip codes, 9 public school districts and 32 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Cortland County Trends
- Population
- 46,809▾
- Median Home Value
- $158,100▴
- K-12 Enrollment
- 8,285▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Cortland County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Cortland County Parcels
Cortland County has 22,577 mapped parcels covering 315,940 acres. The median assessed value is $110,000. The median lot size is 5.73 acres. 4,660 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1955 or earlier. The records carry 16,739 distinct owner names. About 5% of parcels list an owner mailing address outside New York. Owner names, site addresses, assessed values and lot sizes are on nearly every parcel. Mailing addresses reach 92.7%. Browse the interactive Cortland County Parcel viewer here.
Cortland County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 22,577 | 100% |
| Owner name | 22,575 | 99.9% |
| Owner mailing address | 20,940 | 92.7% |
| Site address | 22,577 | 100% |
| Land use code | 22,575 | 99.9% |
| Land use description | 1,505 | 6.7% |
| Assessed value | 22,575 | 99.9% |
| Land value | 22,575 | 99.9% |
| Improvement value | 0 | 0% |
| Acreage | 22,575 | 99.9% |
| Parcel boundary | 22,577 | 100% |
| Download all Cortland County parcels. | ||
Field coverage measured across all Cortland County parcel records.
Cortland County Population
Cortland County had 46,809 residents in 2020. That was 5.1% lower than in 2010. Cortland County had 1,790 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 94 people per square mile. Some of the county's most populated postal areas include Cortland, Homer and Marathon.
Population Trend in Cortland County NY
Cortland County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Cortland County Zip Codes
Cortland County has 11 zip codes. Some of the county's most populated zip codes include Cortland (13045), Homer (13077) and Marathon (13803). Cortland is the largest zip by population, with about 28,406 residents or 61% of the county total. Together, the three largest zips account for about 83% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Cortland County NY
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 13045 | Cortland | 28,406 | ▾ -5.7% |
| 13077 | Homer | 6,446 | ▾ -4.3% |
| 13803 | Marathon | 4,208 | ▴ 5.9% |
| 13040 | Cincinnatus | 2,507 | ▾ -9.1% |
| 13101 | Mc Graw | 2,397 | ▾ -4.4% |
| Download all zip code data | |||
Cortland County Zip Code populations and trends per most recent census data.
Cortland County Demographics
Cortland County has a median age of 36.5, which makes the county a little younger than New York overall. About 18.7% of residents are under 18, while 16.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 27.1% of the population, which points to a solid working-age base. About 28.3% of adults have a bachelor's degree or higher, above the statewide figure of 39.6%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Cortland County NY
Median Age
36.5
Under 18
18.7%
Age 65+
16.7%
Bachelor's+
28.3%
Cortland County School Districts
Cortland County is served by 9 public school districts with 8,285 students enrolled in 2024. The largest districts on the county map are Cortland City, Homer Central and Dryden Central. Those three districts account for about 60% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Cortland County NY
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Cortland City School District | 1,836 | 22.2% | ▾ -1.4% |
| Homer Central School District | 1,828 | 22.1% | ▴ 0.4% |
| Dryden Central School District | 1,304 | 15.7% | ▴ 3.1% |
| Tully Central School District | 737 | 8.9% | ▾ -0.3% |
| Marathon Central School District | 673 | 8.1% | ▾ -6.9% |
| Download all school district data | |||
Cortland County school district enrollment and trends per most recent NCES reporting data.
Cortland County Housing & Real Estate
Cortland County has a median home value of $158,100 and a median gross rent of $911. About 66% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the New York median, while rents come in below the state average. In March 2026, the median listing price was $228,650 and homes spent about 95 days on the market.
Cortland County Housing Mix
Cortland County housing mix: owner, renter and vacant units.
Cortland County Housing Trends
Cortland County median home value and rent trend (last 5 years).
Businesses in Cortland County, NY
Cortland County has 2,004 business listings across 502 categories. The largest categories in Cortland County business listings are Churches & Religious Organizations (50, 2.5%), Auto Repair (41, 2.0%), and Community & Nonprofits (40, 2.0%). The full Cortland County business listings dataset includes names, categories, addresses and contact details where available. Cortland County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Cortland County, NY
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 50 | 2.5% |
| Auto Repair | 41 | 2.0% |
| Community & Nonprofits | 40 | 2.0% |
| Gas Stations | 33 | 1.6% |
| Farm | 31 | 1.5% |
| Landmark And Historical Building | 28 | 1.4% |
| Public And Government Association | 28 | 1.4% |
| Contractors | 24 | 1.2% |
| Hair Salons | 23 | 1.1% |
| Car Dealerships | 21 | 1.0% |
Cortland County Business Listings
| Business | Category | City |
|---|---|---|
| Liberty Resources Center for Brain Injury and Rehabilitation | Abuse And Addiction Treatment | Cortland |
| Cortland Apartments | Accommodation | Cortland |
| Cortland Bookkeeping and Tax Services | Accountant | Cortland |
| Kennedy State Forest | Active Life | Marathon |
| Ruby Acupuncture Clinic | Acupuncture | Cortland |
| Family Connections | Adoption Services | Cortland |
| Tikki's Adult Boutique | Adult Entertainment | Cortlandville |
| Quali-Graphics | Advertising Agency | Homer |
| Dairy Support Services Co. | Agricultural Service | Truxton |
| Hidden Diamond Farms | Agriculture | Truxton |
| Download Cortland County business listings | ||
Cortland County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Cortland County Basemaps
Cortland County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Cortland County Data Package
This page shows a preview of what's included in the Cortland County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Cortland County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.