Tompkins County GIS Maps

Tompkins 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.

Tompkins County Parcels

Tompkins County has 35,368 mapped parcels covering 307,323 acres. The median assessed value is $265,000. The median lot size is 1.80 acres. 5,401 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1967 or earlier. The records carry 27,219 distinct owner names. About 5% of parcels list an owner mailing address outside New York. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Tompkins County Parcel viewer here.

Tompkins County Parcel Data Coverage

Field coverage measured across all Tompkins County parcel records. Download free sample data here.

Tompkins County Population

Tompkins County had 105,740 residents in 2020. That was 4.1% higher than in 2010. Tompkins County added 9,239 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 223 people per square mile. Some of the county's most populated postal areas include Ithaca, Trumansburg and Groton.

Population Trend in Tompkins County NY

Tompkins County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Tompkins County Zip Codes

Tompkins County has 13 zip codes. Some of the county's most populated zip codes include Ithaca (14850), Trumansburg (14886) and Groton (13073). Ithaca is the largest zip by population, with about 69,271 residents or 66% of the county total. Together, the three largest zips account for about 78% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Tompkins County NY

Tompkins County Zip Code populations and trends per most recent census data.

Tompkins County Demographics

Tompkins County has a median age of 32.8, which makes the county a little younger than New York overall. About 14.6% of residents are under 18, while 16% 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 27.9% of the population, which points to a solid working-age base. About 59.2% of adults have a bachelor's degree or higher, above the statewide figure of 39.6%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.

Key Demographics for Tompkins County NY

Tompkins County School Districts

Tompkins County is served by 11 public school districts with 13,590 students enrolled in 2024. The largest districts on the county map are Ithaca City, Dryden Central and Lansing Central. Those three districts account for about 55% 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 Tompkins County NY

Tompkins County school district enrollment and trends per most recent NCES reporting data.

Tompkins County Housing & Real Estate

Tompkins County has a median home value of $271,500 and a median gross rent of $1,374. About 54% 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 $416,750 and homes spent about 33 days on the market.

Businesses in Tompkins County, NY

Tompkins County has 4,579 business listings across 686 categories. The largest categories in Tompkins County business listings are College University (125, 2.7%), Community & Nonprofits (81, 1.8%), and Churches & Religious Organizations (73, 1.6%). The full Tompkins County business listings dataset includes names, categories, addresses and contact details where available. Tompkins County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Tompkins County, NY

Tompkins County Business Listings

Tompkins County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Tompkins County Basemaps

Tompkins 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.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from New York — explore the full structure before you buy.