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Tompkins County GIS Division

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GIS LogoWelcome to Tompkins County Geographic Information Services... a division of the Department of Information Technology Services (ITS).


Mission graphic imageOur Mission

The mission of Tompkins County GIS is to serve the Tompkins County Community through the distribution of relevant GIS data and mapping resources to assist departments and municipal stakeholders on an ongoing basis. Tompkins County GIS also focuses on the production and distribution of meaningful datasets, maps, and interactive mapping applications.

Tompkins County began its investment in GIS in the mid-1990s with the conversion of the County's tax mapping paper archives to a multi-layered GIS dataset. Today, the County has developed a robust GIS that is available and used by many county departments, local governments, and the community at large.


About Us Icon- three figuresAbout Us

The GIS Division serves as the lead agency for enterprise GIS development and data distribution. We provide GIS direction, GIS project assistance, and deploy GIS technology for county departments, other municipalities, and the public. We do this with the help of key GIS Staff in other Departments and use every tool at our disposal to provide GIS resources for all!

As such, the team is currently responsible for:

  • Providing Assistance to county departments in deploying GIS data and
    applications to support departmental activities;
  • Development and maintenance of countywide address data;Globe with magnifier
  • Application support for public safety and emergency response;
  • Ad hoc map creation for County agencies and local governments.
  • Data distribution through online data repositories
  • Web application development and support for county departments, local governments, and the general public through our online map gallery;
  • Development of new geospatial datasets and mapping services as requested;
  • GIS software license Administration and;
  • Management and day-to-day maintenance of the County's Enterprise-wide GIS including all hardware and software products used therein.

We are continually improving our data-sets as well as providing access to aid in various projects with our municipal partners. 

Mapping Tompkins

Mapping TompkinsOne-stop mapping portal for GIS maps and applications including the Tompkins County Property viewers (Simple easy search, More Advanced) and the new BOE Lookup Application where you can get the latest info on polling places and election officials for an address. Start by typing the address and first few letters of the street name for example; "128 E Buff" and chose the address of interest from the pull-down.


Tompkins County Open Data Portal

Search for data from various categories and download for free.


Property floodedFEMA  Flood Insurance Rate Map (FIRM) Tools for Tompkins County 
Site Managed by Tompkins County Department of Planning and Sustainability

Download Parcel Data for 2016Data for Download

Data Set IconOther Data Sets

State of the State

Map imageWhat is GIS Anyway?

"At a minimum, GIS is a technological field that incorporates geographical features with tabular data to map, analyze, and assess real-world problems.."  More on that here.