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 but not limited to tax maps, parcels, streets, addresses, districts, planimetrics and much more. The staff provides technical support, training and other services to all Rockland County departments as well as local government.
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 award winning GIS Portal. Some of the information is accessible only by having an account, which is provided only upon execution of a License Agreement. See below for a list of our products and services.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 (i.e., ArcMap, ArcView, etc.), AutoCAD, and other GIS programs and are available in NAD 83 horizontal datum. Rockland County has been developing data sets since 1994.GIS Portal
- The Interactive Mapping Applications
offers users the opportunity to customize and print their own maps. Currently there are two internally developed public mapping applications available to choose from:
- Base Map Application 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 it lies within. These include School, Election and Political Districts, and Census Geography. Users can also utilize Statistical Tools to provide statistical breakdowns of Population by Age, Housing Occupancy, Land Use, or Impervious Surfaces by Census Blocks.
- Preliminary FEMA Flood Risk Study Application allows users to view existing and preliminary flood map information. The preliminary flood information is not yet finalized by FEMA and may be subject to further revision. This information is provided by Rockland County for informational purposes only, and is NOT AN OFFICIAL FEMA MAP. It should only be used as an initial or cursory estimation of a property's proximity to a preliminary Special Flood Hazard Area (SFHA). For an official floodplain determination, please contact FEMA, your mortgage lender, or your community floodplain manager. *Please note that the preliminary Advisory Base Flood Elevations (ABFE's) will be updated/incorporated after they are released and made avaialable to the County by FEMA. This affects the portions of the County along the Hudson River.
For licensees, there are additional interactive map applications available, including a more detailed base map application and an emergency application. For details, please contact the GIS Division.
The On-line Map Gallery allows users to view, download and print a variety of prepared maps which are organized by category. Hard Copy Maps may be purchased from the Rockland County Planning Department by using the Map Request Form. Download and follow the instructions on the form to receive your maps by mail.
A variety of GIS data is available for download for use in your own software applications(s). Most of the data is in ESRI shapefile format or AutoCAD dwg format. Refer to the Digital Data Request Form for a list of layers made available via License Agreement. If interested, submit the completed Form.Maps -
The GIS Division has a tremendous collection of hard copy maps, most of which can be viewed by accessing online on our GIS Portal. Refer to the Map Request Form
to view from our inventory of maps. The Online Map Gallery
allows users to view, download and print a variety of prepared maps which are organized by category. Users will need Adobe Reader
to view the maps. Maps have been prepared in a variety of sizes ranging from letter to poster size. 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. * Please note that some maps are quite large and may take some time to download even with a broadband connection.
Tax Mapping - The GIS Division is responsible for maintaining tax maps for Rockland County.Historic Aerial Photography -
Presently, there are more than 89,000 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, at different times. Since that time, Rockland County has been maintaining the tax maps for all of Rockland County. Refer to the Tax Map Request Form for an inventory of our maps.
For historic tax maps, contact the individual towns or the Rockland County Archives in Building S in the Pomona Health Complex, which is under the direction of the Rockland County Clerk.
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 hardcopy 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 in the Pomona Health Complex. For digital aerial photography, or orthoimagery, please refer to the orthoimagery section.Orthoimagery Products -
After Tropical Storm Floyd impacted Rockland, the County decided to have an aerial flight done in 2000. In addition to the hard copies, the GIS Division required digital aerial photographs, or orthoimagery to be delivered as well. This imagery is released via a License Agreement or can be viewed on the GIS Portal
by selecting the Interactive Maps
tab. Since 2000, Rockland County has obtained orthoimagery for other years as part of the New York State Orthoimagery Program. Rockland County was flown in 2004, 2007 and 2010 as part of this Program. Click Here
to view and/or download this imagery from the NYSGIS Clearinghouse. Update: Rockland County is being flown in the spring of 2013. As a result, we anticipate having 2013 orthoimagery in early 2014.Training
- The GIS Division of the Planning Department provides training to municipalities for many different computer software products containing GIS data. For further information, please contact the GIS Division via e-mail at firstname.lastname@example.org
or if the matter requires immediate assistance, please call (845)-364-3434. If a GIS Portal support team member is available they will assist you. If a support team member is not available, please leave a voicemail and someone will return your call.