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Johnston County GIS Data

Feature Data Layers obtained Aug. 28, 2000

The following county-wide feature data layers are available for Johnston County. The data are in shapefile format, State Plane 1927/feet. Current data are downloadable directly from Johnston County. Parcel maps, resampled digital orthophotos and contour maps are downloadable by tax map grid unit (downloadable as a layer).

Feature Data

Shapefile	Description	File Size	Brief Metadata
m[grid#]	Parcel Maps	varies	n/a
c[grid#]	Contour Maps	varies	n/a
taxindex	Tax Map Grid	0.05 mb	n/a
citylimi	City Limits	0.42 mb	n/a
jcetj	Planning Boundaries	0.06 mb	n/a
centerli	Centerlines (Streets)	2.47 mb	n/a
jcfire	Fire Districts	1.28 mb	n/a
jrescue	Rescue Squad Districts	0.98 mb	n/a
tship	Townships	1.72	n/a
city	City Boundaries	0.09 mb	n/a
mrds	Major Roads	0.13 mb	n/a
names.dxf	Roadname Text	0.47 mb	n/a

Digital Orthophotos

As of 2000, digital orthophoto flights had been conducted in spring 1995. The original data (black & white) is in TIFF format data is not yet available via the Libraries. The orthophotos are tiled to correspond to the tax map grid layout. The scale of each ortho image is1:4800, 5000x5000 pixel resolution. Resampled versions (resampled to 1 mb in file size from 25 mb Format) are downloadable as TIFFs by tax map grid cell.

Additional flights were done in early 2001. black & white photography was done at 200' scale and color photography at 400' scale. Color imagery may be available as early as Sept. 2001.

Go to the Libraries County GIS Page