Williamson County Plat Maps (Illinois)

Search for Williamson County, IL plat maps. Plat maps include information on property lines, lots, plot boundaries, streets, flood zones, public access, parcel numbers, lot dimensions, and easements.


Clerks maintain and preserve important public records for a county or local government, including detailed local maps such as plat maps in Williamson County, IL. These Williamson County plat maps show the property boundaries in a neighborhood, including lots and their dimensions, boundary locations, streets and street numbers, and parcel numbers. These Williamson County maps contain important information for prospective buyers who may be concerned about easements, rights of way, flood zones, and public access on a particular plot of land. Clerks often provide online access to plat maps.

Carterville City Clerk Carterville IL 101 South Division Street 62918 618-985-2252

Herrin City Clerk Herrin IL 300 North Park Avenue 62948 618-942-3175

Williamson County Clerk Marion IL 407 North Monroe Street 62959 618-997-1301


Treasurers and Tax Collectors are responsible for collecting taxes at the local level and distributing these funds in Williamson County, IL. In order to collect Williamson County property taxes, the Treasurer and Tax Collector typically maintains maps covering its jurisdiction, including plat maps. These plat maps provide detailed information on a neighborhood or local area, including property boundaries and divisions, lot dimensions, parcel and street numbers, and land sizes. Williamson County plat maps also contain important information for prospective buyers about flood zones, easements, rights of way, and public access. The Williamson County Treasurer and Tax Collector may provide online access to plat maps on its website.

Johnston Treasurer Johnston IL 500 Washington Ave 62951 618-983-6544

Marion City Treasurer Marion IL 1102 Tower Square Plaza 62959 618-993-8575

Williamson County Treasurer's Office Marion IL 200 West Jefferson Street 62959 618-997-1301


Assessors are responsible for determining the value of taxable property within Williamson County, IL. These property assessments are used to levy property taxes. In addition, Williamson County Assessors maintain detailed neighborhood maps that contain information about the properties. These plat maps include all the lots in a tract of land, boundary locations, street numbers, property lines, and lot dimensions. Williamson County plat maps also show any easements or rights of way. Assessors are responsible for assigning a parcel number to each lot, which appears on the map. Plat maps may be available online through the Assessor's website.

Williamson County Assessor's Office Marion IL 200 West Jefferson Street 62959 618-997-1301


Recorders of Deeds maintain real estate ownership documents to ensure the accuracy of property, land, and property tax records in Williamson County, IL. As part of this responsibility, Recorders of Deeds typically keep detailed Williamson County plat maps. These maps show the subdivisions in a tract of land, including boundary locations, parcel and street numbers, property lines, and lot dimensions. Plat maps also include Williamson County flood zones, easements, and rights of ways, as well as public access land. The Recorder of Deeds often provides public access to plat maps through its website.

Williamson County Recorder of Deeds Marion IL 407 North Monroe Street 62959 618-997-1301