St. Louis County GIS Portal (Missouri)

Search for St. Louis County, MO GIS maps. A GIS map search can provide information like county maps, town maps, city maps, local maps, property maps, parcel maps, plat maps, public property, property tax assessments, flood zones, zoning boundaries, geographic information, historical maps, and property tax information.


St. Louis County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate St. Louis County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These St. Louis County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in St. Louis County, Missouri. These maps can also include place names, bodies of water, flood zones, property zones, and other geographic information. Some Assessors may keep historic GIS maps that include historic property tax assessments. These maps may be available on the St. Louis County Assessor Office website.

St Louis County Assessor Clayton MO 41 South Central Avenue 63105 314-615-1500

St Louis County Assessor's Office Clayton MO 41 South Central Avenue 63105 314-615-0124


St. Louis County Town and City Halls provide municipal services for their town or city, including preserving vital records and maintaining records on their jurisdiction such as St. Louis County GIS maps. The GIS maps at a St. Louis County Town or City Hall can include property boundaries, public property, unclaimed parcels, and roads, as well as appraisal values for properties and property tax assessments in St. Louis County, Missouri. These GIS maps may also show population information, place names, zoning boundaries, bodies of water, flood zones, and other geographic information. Some Town and City Halls also have historical maps of their area. These maps are often available to the public on the St. Louis County Town and City Hall website.

Bridgeton City Hall Bridgeton MO 12355 Natural Bridge Road 63044 314-739-7500

Chesterfield City Hall Chesterfield MO 690 Chesterfield Parkway West 63017 636-537-4000

Eureka City Hall Eureka MO 100 City Hall Dr 63025 636-938-5233

Fenton City Hall Fenton MO 625 New Smizer Mill Road 63026 636-343-2080

Florissant City Hall Florissant MO 955 Saint Francois Street 63031 314-921-5700

Hazelwood City Hall Hazelwood MO 415 Elm Grove Lane 63042 314-839-3700

Maryland Heights City Hall Maryland Heights MO 11911 Dorsett Road 63043 314-291-6550

St Ann City Hall St. Ann MO 10405 Saint Charles Rock Road 63074 314-427-8009

Valley Park City Hall Valley Park MO 320 Benton Street 63088 636-225-5171

Winchester City Hall Ballwin MO 109 Lindy Blvd 63021 636-391-0600


St. Louis County Clerk Offices maintain public records for a county or local government, which includes GIS maps. These maps provide detailed information on the area, including St. Louis County property maps that show boundaries, public property, property divisions, and in some cases, population information in St. Louis County, Missouri. They may also include property value assessments and property tax rates. St. Louis County GIS maps can show place names, bodies of water, zoning information, flood zones, and other geographic information. Clerks may also have historic GIS maps from the USGS or other organizations, and these maps are often available online through the Clerk Office website.

Chesterfield City Clerk Chesterfield MO 690 Chesterfield Parkway West 63017 636-537-4711

Ellisville Clerk Ellisville MO 37 Weis Avenue 63011 636-227-3729

Eureka Clerk Eureka MO 120 City Hall Drive 63025 636-938-6600

Ferguson City Clerk Ferguson MO 110 Church Street 63135 314-524-5152

Maryland Heights City Clerk Maryland Heights MO 11911 Dorsett Road 63043 314-291-6550

St Louis County Clerk Maplewood MO 12 Sunnen Drive 63143 417-741-6661

St Louis County Clerk Clayton MO 41 South Central Avenue 63105 314-615-7041

Webster Groves Clerk Webster Groves MO 4 East Lockwood Avenue 63119 314-963-5416

Wildwood City Clerk Wildwood MO 183 Plaza Drive 63040 636-458-0440