Online Map Disclaimer


Please be aware this is a release candidate of the new Union County Online Map published October 28, 2009. The software used to publish the old site became obsolete resulting in a new design. If this is the first time you are visiting this new map, please click the "Help" button. It describes what function each button performs, and how to use them. At the bottom of the help page is an important section on using the legend. While using this site please keep in mind the map is in a trial period. We are working on a final product that will draw faster and display the results in a different format. We have published this temporarily in recognition of the popularity of the old site. The data will be more current and relies on caching technology therefore will require you to periodically clear temporary internet files to obtain new revised data.

Accept Disclaimer and Enter Online Map


The information contained in this GIS website is provided and maintained by various individuals representing a number of agencies, including Union 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 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 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 Union County Online Map has been recently updated to include parcel information collected during the county reassessment. Through this process the Parcel Identification Number (PID) has been converted to a new format. A decimal and five digits have been added. You must use the new PID format in both the Assessment Department as well as on the online map. See the following table for converting old to new PID.

Twp-Sheet-Parcel Twp-Sheet-Parcel.00000
xxx-xxx-xxx xxx-xxx-xxx.xxxxx
001-080-001.4 001-080-001.40000



To learn more about Union County GIS and for further clarification on the accuracy of the data on this website please contact the Union County GIS Department.


Please e-mail the Union County GIS staff at