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Boone County Geographic Information Systems, or GIS, is responsible for maintaining a county wide geographic dataset that is used in everything from property assessment to emergency response. Our most important duty is making sure that we have an accurate, up to date map of every property in Boone County for tax and assessment purposes. As of 2009, the Boone County GIS department does all cadastral (property lines) mapping in house which allows us to incorporate new deeds into our maps in weeks instead of months. 

In addition to mapping property lines, we manage or keep several other datasets including properties in the floodplain, surface height and contours, soil data, Belvidere utilities, septic systems, zoning and addresses. All these datasets may require routine updates or distribution to the department that needs them. Much of our work involves assisting other departments to do their work more efficiently.

Our most important function to the public is operating and updating our public access mapping website which makes available much of our cadastral data, floodplain maps, and zoning information at no cost. In addition to the mapping website, we also fulfill GIS data requests and print maps. 

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