Multnomah County GIS Portal (Oregon)

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

Multnomah County Assessor's Office Portland OR 501 Southeast Hawthorne Boulevard 97214 503-988-3326


Multnomah 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 Multnomah County GIS maps. The GIS maps at a Multnomah 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 Multnomah County, Oregon. 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 Multnomah County Town and City Hall website.

Fairview City Hall Fairview OR 1300 Northeast Village Street 97024 503-665-7929

Gresham City Hall Gresham OR 1333 Northwest Eastman Parkway 97030 503-618-2507

Portland City Hall Portland OR 1221 Southwest 4th Avenue, Rm 110 97204 503-823-4000

Troutdale City Hall Troutdale OR 104 Southeast Kibling Street 97060 503-665-5175

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

Multnomah County Clerk Portland OR 1040 Southeast Morrison Street 97214 503-988-3957


Multnomah 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 Multnomah 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 Multnomah County, Oregon. The Recorder of Deeds may also have historic GIS maps. These maps are often available on the Multnomah County Recorder of Deeds website.

Multnomah County Recorder of Deeds Portland OR PO Box 5007 97208 503-988-3326