Welcome to the GIS Service Center
Web-based Map Services
Order GIS Data and Maps
GIS CDs and Aerial Photography
GIS Data is available on two CDs. Included on the CDs are jurisdictional boundaries, streets centerlines, parcel data, etc. Historical aerial photography from 1937 to 2010 is also available for upload to a hard drive by our Records Center staff. Find more information, including ordering details, about our GIS Data CDs and Aerial Photography.
St. Louis County's GIS Service Center maintains a large variety of commonly requested maps. For a list of available maps and ordering info, see our Map Order Form.
Custom Maps and Data
Not finding what you need in our standard maps? Learn about our custom mapping services.
Download Maps (8.5"x11")
Check out our library of small-format countywide thematic maps available for free download.
Demographic and Economic Data
St. Louis County Fact Book
St. Louis County, with a 2010 population of 998,954, is the largest county in Missouri and has the highest per capita income in Missouri ($54,343 in 2008, from the Bureau of Economic Analysis). St. Louis County is the heart of the St. Louis region with a strong and diversified economy and a highly skilled workforce. For more information, see the 2007-2012 County Fact Book .
2010 Census Information
On February 24, 2011 the U S Census Bureau released population counts from the 2010 Census that confirm the County has seen a 1.7% decrease in population from 1,016,315 in 2000 to 998,954 in 2010. The following maps provide a look at the change in population throughout the county between 2000 and 2010.
For more releases, see the What's New Archives