Mercer County GIS Portal (Illinois)

Search for Mercer County, IL GIS maps. A GIS map search can provide information like county maps, town maps, city maps, local maps, property maps, parcel maps, plat maps, public property, property tax assessments, flood zones, zoning boundaries, geographic information, historical maps, and property tax information.


Mercer County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Mercer County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Mercer County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Mercer County, Illinois. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the Mercer County Assessor Office website.

Aledo Assessor Aledo IL 2582 130th Avenue 61231 309-754-9181

Greene Township Assessor Viola IL 2793 95th Avenue 61486 309-596-2530

Mercer County Assessor's Office Aledo IL 100 Southeast 3rd Street 61231 309-582-7814


Mercer County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as Mercer County GIS maps. The GIS maps at a Mercer County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in Mercer County, Illinois. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the Mercer County Town and City Hall website.

Aledo City Hall Aledo IL 120 North College Avenue 61231 309-582-2332

Joy City Hall Joy IL 200 West Main Street 61260 309-584-4127

New Boston City Hall New Boston IL 405 Main Street 61272 309-587-8181

Reynolds City Hall Reynolds IL 222 W Main St 61279 309-372-4600

Seaton Town Hall Seaton IL 201 Maple Street 61476 309-586-5341

Sherrard City Hall Sherrard IL 517 3rd Street 61281 309-593-2415


Mercer County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including Mercer County property maps that show boundaries, public property, property divisions, and in some cases, population information in Mercer County, Illinois. They may also include property value assessments and property tax rates. Mercer County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online through the Clerk Office website.

Joy City Clerk Joy IL 200 West Main Street 61260 309-584-4127

Mercer County Clerk Aledo IL PO Box 66 61231 309-582-7021

Sherrard Village Clerk Sherrard IL 517 3rd Street 61281 309-593-2415


Mercer County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Mercer County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Mercer County, Illinois. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Mercer County Recorder of Deeds website.

Mercer County Recorder of Deeds Aledo IL PO Box 66 61231 309-582-1137