DeKalb County GIS Portal (Illinois)

Search for DeKalb 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.


DeKalb County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate DeKalb County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These DeKalb County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in DeKalb 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 DeKalb County Assessor Office website.

Burlington Township Assessor Sycamore IL 434 South Main Street 60178 847-683-2555

Cortland Township Assessor Cortland IL 14 South Prairie Street 60112 815-756-6423

Dekalb County Assessor's Office Sycamore IL 110 East Sycamore Street 60178 815-895-7120

Sandwich Township Assessor Sandwich IL 201 West Center Street 60548 815-786-2828

Sycamore Township Assessor Sycamore IL 545 Brickville Road 60178 815-899-5313


DeKalb 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 DeKalb County property maps that show boundaries, public property, property divisions, and in some cases, population information in DeKalb County, Illinois. They may also include property value assessments and property tax rates. DeKalb 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.

Cortland Town Clerk Cortland IL 59 South Somonauk Road 60112 815-756-9041

Dekalb County Clerk Sycamore IL 110 East Sycamore Street 60178 815-895-7146

Kirkland City Clerk Kirkland IL 511 Main Street 60146 815-522-6179

Sandwich City Clerk Sandwich IL 144 East Railroad Street 60548 815-786-9321


DeKalb 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 DeKalb County GIS maps. The GIS maps at a DeKalb 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 DeKalb 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 DeKalb County Town and City Hall website.

Cortland Town Hall Cortland IL 59 South Somonauk Road 60112 815-756-3030

Genoa City Hall Genoa IL 333 East 1st Street 60135 815-784-2327

Sandwich City Hall Sandwich IL 144 East Railroad Street 60548 815-786-8802

Waterman City Hall Waterman IL 215 West Adams Street 60556 815-264-3652


DeKalb 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 DeKalb 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 DeKalb County, Illinois. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the DeKalb County Recorder of Deeds website.

Dekalb County Recorder of Deeds Sycamore IL 110 East Sycamore Street 60178 815-895-7149