McHenry County Property Search

Search free McHenry County IL property, land, and tax records through local government assessors, auditors, clerks, property appraisers, deeds recorders, treasurers, tax collectors, city halls, and town halls.


The McHenry County Assessor is responsible for determining the value of property in order to determine McHenry County property taxes. The McHenry County Assessment Office collect data from on-site inspections, value assessments for construction or improvements, comparable sales, and calculations of depreciation. The McHenry County Tax Assessor maintains current data on every parcel in the McHenry County, which includes ownership information, maps of property lines, inventories of parcels and structures, and the value of all the property in the McHenry County, IL. The McHenry County Assessor’s Office can answer questions regarding McHenry County property tax appeals and assessments, McHenry County property tax rates and payment due dates.

Burton Township Assessor Spring Grove IL 1420 Elm Street 60081 815-675-0323

Dunham Township Assessor Harvard IL 21706 West Airport Road 60033 815-943-4444

Greenwood Township Assessor Wonder Lake IL 5211 Miller Road 60097 815-648-4536

Mc Henry Township Assessor Johnsburg IL 3703 North Richmond Road 60051 815-385-0175

Mchenry County Assessor's Office Woodstock IL 220 North Seminary Avenue 60098 815-334-4274

Nunda Township Assessor Crystal Lake IL 3510 Bay Road 60012 815-459-6140


The McHenry County Clerk files important documents and preserves municipal records in order to maintain an archive of McHenry County property records that can be accessed by the public. The Clerk's Office is a valuable source of information on property in McHenry County, Illinois. The McHenry County Clerk's Office contains documentation on real estate excise taxes, registered land, and property transactions, as well as land documents including McHenry County deeds, mortgages, and liens on properties.

Algonquin Village Clerk Algonquin IL 2200 Harnish Drive 60102 847-658-4322

Mchenry County Clerk Woodstock IL 2200 North Seminary Avenue 60098 815-334-4234

Oakwood Hills Clerk Cary IL 3020 North Park Drive 60013 815-444-9453

Riley Township Clerk Marengo IL 21451 Norway Ct 60152 815-568-7335

Wonder Lake Clerk Wonder Lake IL 4200 Thompson Road 60097 815-728-0839


The McHenry County Recorders of Deeds maintain public records, particularly documents related to property and land records, and make them available for public access in McHenry County, IL. The Office of Recorder of Deeds in McHenry County is a valuable source of information on property records The Recorder of Deeds maintains documents on land transactions within its jurisdictions, including McHenry County deeds and titles, mortgages, property ownership records, surveys, and easements, as well as tax liens.

McHenry County Recorder of Deeds Woodstock IL 2200 North Seminary Avenue 60098 815-334-4110


McHenry County Town Halls and City Hall are the chief administrative offices that runs the town or city. The Town Hall or City Hall often maintains records related to the locality, including McHenry County property taxes, property value assessments, and land transactions, as well as property sales and transfers in McHenry County, Illinois.

Crystal Lake City Hall Crystal Lake IL 100 West Woodstock Street 60014 815-459-2020

Harvard City Hall Harvard IL 201 West Front Street 60033 815-943-6468

Marengo City Hall Marengo IL 132 East Prairie Street 60152 815-568-7112

McHenry City Hall McHenry IL 333 South Green Street 60050 815-363-2100

Seneca Township Town Hall Woodstock IL 16506 Garden Valley Road 60098 815-923-2288

Woodstock City Hall Woodstock IL 121 West Calhoun Street 60098 815-338-4300


The McHenry County Treasurer and Tax Collector’s Office is responsible for the collection of McHenry County property tax revenue. The Treasurer and Tax Collector maintains current McHenry County property tax information including McHenry County property ownership information, GIS Maps, tax maps, historical property tax rates, lists of sold parcels, and is also charged with the sale of properties due to a default on taxes in McHenry County, Illinois.

Mchenry County Treasurer's Office Woodstock IL 2200 North Seminary Avenue 60098 815-334-4000