GIS Map System

McHenry County GIS website that is useful in finding comparable properties. 
http://www.mchenrycountygis.org/athena/

Tax Bill Information

McHenry County Treasurer’s Website 
https://www.mchenrycountyil.gov/county-government/departments-j-z/treas…

Appeal Forms & Rules

Board of Review Appeal forms 
https://www.mchenrycountyil.gov/departments/assessments

Township Assessors in McHenry County

List of all Assessors in McHenry County, Download PDF