Mapping Site


The information contained in this GIS website is provided and maintained by various individuals representing a number of agencies, including Union County GIS, Northumberland County departments, municipal governments, and state and federal agencies. No guarantee is given as to the accuracy or currency of any of the data. Therefore, in no event shall Union County GIS or Northumberland County Government be liable for any special, indirect, or consequential damages or any damages whatsoever resulting from loss of use, data, or profits, whether in an action of contract, negligence, or other action, arising out of or in connection with the use of the information herein provided.

The website is designed to serve as a secondary representation of real property found within this jurisdiction, and is compiled from the Assessment, Emergency Services, and other Public Records, which are the primary sources for this public information. Users of this website are hereby notified that these primary sources should be consulted for verification of the information presented here. Union County GIS, Northumberland County and the software developers assume no legal responsibility for the information on this website.


The data layers presented on this website have been compiled for information purposes only. The data layers serve only as duplicates or copies of the original source data. The data layers do not take the place of a legal survey or other primary source documentation. The data layers presented on this website may not be used to determine, certify, or verify if a parcel is a qualifying or exempt property. For example, this data may not be used to verify that a parcel of land is or is not in the floodplain. To do so a licensed surveyor should survey the property.


The municipal boundary lines shown here are for illustration purposes only and are not suitable for site specific decision making. This dataset is currently undergoing some modifications to match aerial photography and existing county records. All other mapping data such as roads and streams meets National Map accuracy standards for 1" to 200' scale mapping. If you find any data you feel is erroneous or have any suggestions to improve this data please bring it to the attention of the Assessment Office for consideration and correction by the GIS Department.

Additional information