McHenry County, IllinoisProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
Specific dates are not recorded for this jurisdiction. Ask the collector about payment dates and the assessor about appeal dates.
Exemptions & appeals
View exemption application (opens in a new tab)Senior relief
The McHenry County assessment and GIS pages provide parcel assessment information; current senior homestead and freeze forms/deadlines were not exposed in the reviewed official pages.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →