Marion County GIS Portal (Missouri)

Search for Marion 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.


Marion County Assessor Offices are charged with determining the value of taxable property in their county or local area in order to calculate Marion County property taxes. In addition to property values, Assessors maintain detailed county and local maps, including Geographic Information Science (GIS) maps. These Marion County GIS maps can show public property, parks, property divisions, and roads, as well as property assessments and property taxes in Marion 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 Marion County Assessor Office website.

Marion County Assessor's Office Hannibal MO 906 Broadway Exd 63401 573-248-1515


Marion 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 Marion County GIS maps. The GIS maps at a Marion 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 Marion 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 Marion County Town and City Hall website.

Hannibal City Hall Hannibal MO 320 Broadway 63401 573-221-0111

Palmyra City Hall Palmyra MO 301 South Main Street 63461 573-769-2223


Marion 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 Marion County property maps that show boundaries, public property, property divisions, and in some cases, population information in Marion County, Missouri. They may also include property value assessments and property tax rates. Marion 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.

Marion County Clerk Palmyra MO 100 South Main Street 63461 660-646-8000


Marion County Recorders of Deeds keep real estate records to ensure the accuracy of property and land records. In addition to deeds, Recorders of Deeds also have detailed county and local maps, including Marion County GIS maps that show property lines, building information, public property, unclaimed parcels, as well as property value assessments and property tax information. These GIS maps may also include place names, zoning boundaries, bodies of water, flood zones, and other geographic information in Marion County, Missouri. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Marion County Recorder of Deeds website.

Marion County Recorder of Deeds Palmyra MO PO Box 392 63461 573-769-7001