Mapping and GIS

The Rockland County Geographic Information Systems (GIS) Division creates and maintains digital data for Rockland County, New York. The GIS Division compiles a wide array of information, including tax maps, parcels, streets, addresses, districts, planimetrics, and much more. The staff provides technical support, training, and other services to all Rockland County departments and local governments.

Our mission is to provide useful and accessible GIS related resources to citizens, businesses, and local governments in the most efficient and effective manner possible. To accomplish this, we make the maps and digital data available online in a central repository, via our GIS Portal.

GIS Data Development

The GIS Division is the lead agency for GIS data development for Rockland County government. Geographic Information Systems digitally create and allow for the manipulation of certain spatial areas that may be jurisdictional, purpose, or application-oriented. These layers of information involved are grouped into data sets called GIS data sets and these sets can be found on the GIS Portal. Data sets are created for use in ESRI products, AutoCAD, and other GIS programs and are available in NAD 83 horizontal datum. Rockland County has been developing data sets since 1994.

GIS Portal

Our New GIS Portal was launched on June 1, 2020. The site will continue to be enhanced in the future. The Portal also allows users to view and/or download PDF Maps and GIS Data. The Application Gallery includes interactive maps created by The Planning Department - GIS team, as well as applications created by other government agencies.

Our most popular app is the Base Map Application, which allows users to view and print maps with Tax Parcel, Municipal Boundaries, Roads, Public Transportation, Historic Resources, Economic Data, Land Use Data, Planimetric Data, Environmental Data, and Topography. Users can search by Tax ID or Address and determine the various Districts a parcel lies within, including Election and Political Districts.

Maps

The GIS Division has a tremendous collection of hard copy maps, most of which can be viewed online though the GIS Portal. The Online Map Gallery allows users to view, download, and print a variety of prepared maps in different sizes. If you or your company do not own a large format plotter, you can plot poster-sized maps for a reasonable fee at a commercial establishment such as an office copy center.

Tax Mapping

The GIS Division is responsible for maintaining tax maps for Rockland County. Presently, there are more than 90,000 parcels in Rockland County. Under New York State Law (Refer to Laws of 1970, Chapter 957; and, 9 NYCRR Part 189 for more details), Rockland County is mandated to maintain and certify the tax maps annually. The tax maps are certified by the County Real Property Tax Director. Prior to 1987, the individual towns were solely responsible for maintaining the tax maps within their jurisdiction. In 1987, the County began to assemble digital tax maps based on 1987 aerial photography and the land records filed to date in the County Clerk's office. During the next 15 years, the various towns reviewed and eventually approved the County-prepared tax maps. Since then, Rockland County has been maintaining the tax maps for all of Rockland County.

For historic tax maps, contact the individual towns or the Rockland County Archives in Building S of the Pomona Health Complex, which is under the direction of the Rockland County Clerk.

Historic Aerial Photography

The GIS Division has an inventory of historic aerial photography available for viewing. Please call us at (845) 364-3434 to make an appointment to view the aerials. We have hard copy aerials for the following years: 1958 (oldest), 1969-1970, 1974, 1975-1977, 1984 (color), 1987, 2000 (color), and 2001 (color infrared). For other hard copy aerial photography, contact the Rockland County Archives in Building S of the Pomona Health Complex.

Orthoimagery Products

After Tropical Storm Floyd impacted Rockland, the County decided to have an aerial flight done in 2000. Since then, Rockland County has obtained orthoimagery for other years as part of the New York State Orthoimagery Program. New York State continues to fly. This imagery, and those from previous years, can be viewed and/or downloaded from the NYSGIS Clearinghouse.

Training

The Planning Department provides training to municipalities for many of our offered products. For further information, please email the GIS Division. If the matter requires immediate assistance, please call (845)-364-3434 and a GIS Portal support team member will assist you, if available.

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