GIS Base Data

The following data is provided on our free GIS Data Download service. If hard copy media is preferred, please view our Order Data page.

Complete List of GIS Base Data
View a complete list of GIS base data. The updated Comprehensive Plan, Planning and Zoning, and Water and Sewer data is now available.
  • Agricultural Preservation
  • Comprehensive plan
  • Control
  • Emergency
  • Hydrography
  • Index Grids
  • Land Cover
  • Parcels
  • Planning and Zoning
  • Point of Interest
  • Political Features
  • Recreation
  • Schools
  • Transportation
  • Water and Sewer
  • Zipcodes
Contour and Planimetric Data 
Contour, Planimetric, and DEM (Digital Elevation Model) data is also available from the free GIS data download service. All data is provided in personal geodatabase format except DEMs, which are provided in ASCII format. If you need help using this service, please see the GIS Data Ordering System Help document.

In addition to our free download service, we provide our Countywide Base Data on CD for a fee of $200. If hard copy media is preferred, please view our Order Data page.

Orthophotography 
The County’s digital orthophotography is true color, six inch per pixel resolution, accurate at a scale of 1 inch to 100 feet (1:1200). The date of the orthophotography is March, 2005. Digital orthophotography is available as MrSid format with associated world file. MrSID is a compression methodology for reducing the size of large raster data sets.

Please use our online web mapping application At A Glance to assist with your tile requests. Select the Data Download Assistant button which will help you to prepare a list of tiles for download or data request.

In addition to our free download service, we provide our orthophotography data on CD for a fee of $1275 for the entire county or $25 per tile. If hard copy media is preferred, please view our Order Data page.

Disclaimer 
While efforts have been made to ensure the accuracy of this data, Frederick County accepts no liability or responsibility for errors, omissions, or positional inaccuracies in the content of this data. Reliance on this data is at the risk of the user. The data is for illustrated purposes only and should not be used for surveying, engineering, or site-specific analysis.