Digital State and County Line Data 

Digital State and County Line Data   Click Image to enlarge

• National State Line File (1:24,000)
• National County Line File (1:24,000)

Digitized from U.S.G.S. 7.5-minute topographic maps and orthophotography covering the entire lower 48 states, the SuperBase™ National State and County Line Files offers the most comprehensive continuous 1:24,000-scale coverage available anywhere.

For convenience in annotating, the databases also provide the centroid point for each state and county, along with the name. Matched point for point with the Digital Land Survey Data, these databases provide the geographic reference needed to create more complete and informative base maps.

SCALE: 1:24,000

COVERAGE: Continental U.S.

SOURCES:

• TOBIN Orthophoto Map Base - from recent aerial photography (Texas and South Louisiana)
• U.S.G.S. - 7.5-minute topographic quadrangles

SELECTION OPTIONS:

• State
• County/Parish

FORMATS:

• Standard ASCII (InfoBase, TDRBM) - attributed data suitable for use with GIS software (Note: Prices for data in other formats include additional processing fees.)
• Custom ASCII (Landmark ZMap, Landmark Metafile, Aangstrom, Charisma Exchange and other common ASCII formats) - attributed data suitable for use with GIS software, available on a request basis only
• ARC/INFO Export - (Single and Double Precision)
• AutoCAD (DWG, DXF; custom, available on a request basis only)
• Intergraph (MGE, DGN, available on a request basis only)

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