Jefferson County GIS Data (Illinois)

Search for Jefferson County, IL GIS data. A GIS data search can provide information on GIS maps, property lines, county lines, city lines, public property, elevations, flood zones, school boundaries, earthquake zones, property appraisal values, erosion, water pollutants, topography, soil composition, sewers, public utilities, building hazards, population information, demographic information, place names, public property, parks, campgrounds, trails, trail maps, historic maps, historic GIS maps, town maps, county maps, city maps, and neighborhood boundaries.


An Assessor Office is responsible for appraising the taxable property in an area in order to calculate property taxes in Jefferson County, Illinois. As part of this job, Jefferson County Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) data. These Jefferson County GIS maps typically include property divisions, plots, buildings, property appraisal values, and property taxes. They may also include public property, parks, roads, place names, bodies of water, and other local geographical information, as well as flood zones, county zone lines, and school boundaries. These maps can be useful for a number of reasons, including buying and selling property. Assessors may provide online access to their Jefferson County GIS data on their websites.

Jefferson County Assessor's Office Mount Vernon IL 100 South 10th Street 62864 618-244-8016

Mt Vernon Assessor Mount Vernon IL 811 Harrison Street 62864 618-244-0679


A Town or City Hall provides municipal services for their town or city, including keeping vital records and maintaining documents on their jurisdiction such as maps with GIS data in Jefferson County, Illinois. These GIS maps typically include property boundaries, real estate appraisal values, Jefferson County property tax assessments, public property, and unclaimed parcels. The maps may also show place names, Jefferson County zoning boundaries, bodies of water, and flood zones, as well as population and demographic information. Some Town and City Halls also maintain historical maps of their area. These maps are often available on the Town or City Hall website.

Ina City Hall Ina IL 306 South Elm Street 62846 618-437-5305

Mt Vernon City Hall Mount Vernon IL 1100 Main Street 62864 618-242-5000


A Clerk Office maintains public records for a county or local government, including GIS data in the form of maps. These GIS maps provide detailed information such as property boundaries, roads, public property, parks, and in some cases, population and demographic information. GIS data can also show Jefferson County property value assessments, property taxes, flood zones, zoning boundaries, and earthquake zones, as well as place names, bodies of water, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations. Jefferson County GIS data is often accessible through the Clerk Office website.

Jefferson County Clerk Mount Vernon IL 100 South 10th Street 62864 618-244-8020


A Recorder of Deeds keeps real estate documents to ensure the accuracy of property and land records in Jefferson County, Illinois. In addition to filing deeds that provide information on property sales and transfers, Recorders of Deeds also have detailed county and local maps, including Jefferson County GIS data. These maps can include property lines, building information, unclaimed parcels, property value assessments, and property tax information. They may also show Jefferson County place names, flood zones, zoning boundaries, neighborhood lines, bodies of water, and other geographic information. The Recorder of Deeds may provide access to GIS data on its website.

Jefferson County Recorder of Deeds Mount Vernon IL 100 South 10th Street 62864 618-244-8020


A Soil and Water Conservation Office provides information on the conservation and management of natural resources in Jefferson County, Illinois. They are also responsible for developing, implementing, and enforcing policies to protect these natural resources. Jefferson County Soil and Water Conservation Offices maintain GIS data in the form of maps to monitor soil and water, and these Jefferson County maps can show ground and surface water, stormwater runoff, irrigation, erosion, flood zones, and sources of pollution. These maps can be important for buying, selling, or improving property, and they may be available through the Soil and Water Conservation Office website.

Jefferson Illinois Soil and Water Conservation Mount Vernon IL 321 Withers Drive 62864 618-244-5180