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Property Addresses

The Knox County Tax Map Department now issues property addresses. Property owners must have an approved access permit, parcel identification number and exact location of the driveway to obtain an address. Click here for more information.
Knox County Tax Map and GIS Department
117 East High Street
Mount Vernon, Ohio 43050
Phone: 740-393-6752

Property Addresses

The Map Department assigns all house numbers in Knox County, including the City of Mount Vernon and all villages. If you are building a new home, see below for a checklist outlining the steps required to build and an application for a house number.

Please Note: You must have an approved access management or driveway permit and the property must be in your name before a house number can be assigned.

For questions, be sure to contact the right office:

If your home is on a County road, contact the County Engineer’s office : 740-397-1590

On a State road? Contact the Ohio Department of Transportation Highway Garage: 740-392-3066

For a home on a Township road, contact your township zoning inspector or township house.

Tax Map & GIS

117 East High Street, Suite 131
Mount Vernon, Ohio 43050
Phone: (740) 393-6752
Office Hours
Monday – Friday
8:00 AM – 4:00 PM
Closed weekends and holidays

Justin Smith

GIS Supervisor

Phone: (740) 393-6754

Kim McFadden

GIS Technician

Phone: (740) 393-6752

knox-co-911

Thank you for completing the First Responders Residential History ADA Form

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