St. Louis County provides GIS web mapping apps to users to search and explore accurate, up-to-date data (parcels, ownership, crime, tax forfeit land sales, road construction) in a map environment. Listed below is a few ways a person can access this rich and vast data.

County Land Explorer


County Land Explorer

County Land Explorer Themes

Help - County Land Explorer

Subscribe - Email Updates

Mobile Land Atlas - iOS & Android


Adopt A Highway - Adopt a highway segment, schedule and report clean-ups, or view available/unavailable highway segments.

County Service Locations  - View photos of county service locations in association with locations on an interactive map.

County Board Meeting Locations  - View photos of buildings where board meetings will take place and the associated locations on an interactive map.

Survey Explorer - Search for St. Louis County PLSS Corners, Control Points, and Corner Certificates.

Open Data Portal - Access web map applications, geospatial data, and other GIS related resources.


Local Map Apps


St. Louis County makes no representation or warranties, express or implied, with respect to the use or reuse of data provided herewith, regardless of its format or the means of its transmission. THE DATA IS PROVIDED "AS IS" WITH NO GUARANTEE OR REPRESENTATION ABOUT THE ACCURACY, CURRENCY, SUITABILITY, PERFORMANCE, MERCHANTABILITY, RELIABILITY OR FITNESS OF THIS DATA FOR ANY PARTICULAR PURPOSE. St. Louis County shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third party claims resulting from the use of these data, even if St. Louis County has been advised of the possibility of such potential loss or damage. This data may not be used in states that do not allow the exclusion or limitation of incidental or consequential damages.