GIS Data

Union County GIS data is available for download below in shapefile format. Aerial photography is in MrSID format. Geographic locations are projected in Ohio State Plane North Zone coordinates and measured in feet.

Aerial Photography

• 1997 Aerial Photography
• 2000 Aerial Photography
• 2003 Aerial Photography
• 2006 Aerial Photography
• 2009 Aerial Photography
• 2012 Aerial Photography
• 2015 Aerial Photography
• 2016 Aerial Photography (Pictometry)
• 2017 Aerial Photography (Pictometry)
• 2018 Aerial Photography
• 2018 Aerial Photography (color infrared)
• 2019 Aerial Photography (Pictometry)
• 2022 Aerial Photography
• 2023 Aerial Photography (Pictometry)

Buildings and Addresses

• Address Grid
• Addresses
• Building Footprints

Emergency Management

• Law Enforcement Districts
• County Fire Districts
• Fire Box Alarms
• Tornado Sirens
• Dry Hydrants
• Hospitals
• Cemeteries

Flood

• Flood Zones
• Floodplain (100-yr)
• Floodway
• Base Flood Elevations
• Cross Sections

Hydrography

• Lakes
• Streams
• Petitioned Ditches

Property

• Parcels
• Subdivisions
• Virginia Military Surveys (VMS)
• School Districts
• Municipalities
• Townships
• County Area
• County Boundary
• Drainage Easements
• Landmarks

Topography

• 2-ft. Contours (2006) - Allen Township
• 2-ft. Contours (2006) - Claibourne Township
• 2-ft. Contours (2006) - Darby Township
• 2-ft. Contours (2006) - Dover Township
• 2-ft. Contours (2006) - Jackson Township
• 2-ft. Contours (2006) - Jerome Township
• 2-ft. Contours (2006) - Leesburg Township
• 2-ft. Contours (2006) - Liberty Township
• 2-ft. Contours (2006) - Millcreek Township
• 2-ft. Contours (2006) - Paris Township
• 2-ft. Contours (2006) - Taylor Township
• 2-ft. Contours (2006) - Union Township
• 2-ft. Contours (2006) - Washington Township
• 2-ft. Contours (2006) - York Township
• Spot Elevations (2006)

Transportation

• Roads
• Road Junctions (branches, breaks, ends and intersections)
• Bridges
• Railroads

Sanitary Sewer

• Sanitary Sewer (County)

Zoning

• Airport Zoning