- Zoning (Current LaSalle County Zoning Map)
- Flood Map (LaSalle County Map with FEMA flood layer, Wetland Layer, and Topography Layer)
- Assessor (LaSalle County parcel map with assessment information layers)
The LaSalle County Zoning Ordinance and Maps found on this site are for reference and the convenience of having the Maps and Ordinance in a computer-readable format. Electronic versions of the LaSalle County Zoning Ordinance and Maps may not reflect the most current version of said Ordinance and Maps and should not be relied on as an official record of the LaSalle County Zoning Ordinance and Maps. The print version of the Zoning Ordinance and Maps, together with any amendments adopted by the LaSalle County Board subsequent to the most recent update to the print version, remains the official version of the Ordinance and Maps. If any discrepancies exist between the print and internet versions of the LaSalle County Zoning Ordinance and Maps, the print version, together with any LaSalle County Board amendments shall be considered correct. Any questions regarding specific map areas or the Ordinance should be directed to the Land Use Department, 119 West Madison Street, Room 107, Ottawa, IL 61350 at phone number 815-434-8666 or by fax at 815-433-9303.