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The State Plane Coordinate System

The State Plane Coordinate System (SPS or SPCS) is a set of 124 geographic zones or coordinate systems designed for specific regions of the United States. Each state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 110 zones in the continental US, with 10 more in Alaska, 5 in Hawaii, and one for Puerto Rico and US Virgin Islands. The system is widely used for geographic data by state and local governments. Its popularity is due to at least two factors. First, it uses a simple Cartesian coordinate system to specify locations rather than a more complex spherical coordinate system (the geographic coordinate system of latitude and longitude). By thus ignoring the curvature of the Earth, "plane surveying" methods can be used, speeding up and simplifying calculations. Second, the system is highly accurate within each zone (error less than 1:10,000). Outside a specific state plane zone accuracy rapidly declines, thus the system is not useful for regional or national mapping.

Most state plane zones are based on either a Transverse Mercator projection or a Lambert conformal conic projection. The choice between the two map projections is based on the shape of the state and its zones. States that are long in the east-west direction are typically divided into zones that are also long east-west. These zones use the Lambert conformal conic projection, because it is good at maintaining accuracy along an east-west axis. Zones that are long in the north-south direction use the Transverse Mercator projection because it is better at maintaining accuracy along a north-south axis. The panhandle of Alaska, whose maximum dimension is on a diagonal, uses an Oblique Mercator projection, which minimizes the combined error in the X and Y directions.


All State Plane zones in Nebraska

Click here to go back to the list off all State Plane grids

County or City SPCS27 Code SPCS83 Code
Adams 12602 2600
Antelope 12601 2600
Arthur 12602 2600
Banner 12602 2600
Blaine 12601 2600
Boone 12602 2600
Box Butte 12601 2600
Boyd 12601 2600
Brown 12601 2600
Buffalo 12602 2600
Burt 12601 2600
Butler 12602 2600
Cass 12602 2600
Cedar 12601 2600
Chase 12602 2600
Cherry 12601 2600
Cheyenne 12602 2600
Clay 12602 2600
Colfax 12602 2600
Cuming 12601 2600
Custer 12602 2600
Dakota 12601 2600
Dawes 12601 2600
Dawson 12602 2600
Deuel 12602 2600
Dixon 12601 2600
Dodge 12602 2600
Douglas 12602 2600
Dundy 12602 2600
Fillmore 12602 2600
Franklin 12602 2600
Frontier 12602 2600
Furnas 12602 2600
Gage 12602 2600
Garden 12602 2600
Garfield 12601 2600
Gosper 12602 2600
Grant 12601 2600
Greeley 12602 2600
Hall 12602 2600
Hamilton 12602 2600
Harlan 12602 2600
Hayes 12602 2600
Hitchcock 12602 2600
Holt 12601 2600
Hooker 12601 2600
Howard 12602 2600
Jefferson 12602 2600
Johnson 12602 2600
Kearney 12602 2600
Keith 12602 2600
Keya Paha 12601 2600
Kimball 12602 2600
Knox 12601 2600
Lancaster 12602 2600
Lincoln 12602 2600
Logan 12602 2600
Loup 12601 2600
McPherson 12602 2600
Madison 12601 2600
Merrick 12602 2600
Morrill 12602 2600
Nance 12602 2600
Nemaha 12602 2600
Nuckolls 12602 2600
Otoe 12602 2600
Pawnee 12602 2600
Perkins 12602 2600
Phelps 12602 2600
Pierce 12601 2600
Platte 12602 2600
Polk 12602 2600
Red Willow 12602 2600
Richardson 12602 2600
Rock 12601 2600
Saline 12602 2600
Sarpy 12602 2600
Saunders 12602 2600
Scotts Bluff 12602 2600
Seward 12602 2600
Sheridan 12601 2600
Sherman 12602 2600
Sioux 12601 2600
Stanton 12601 2600
Thayer 12602 2600
Thomas 12601 2600
Thurston 12601 2600
Valley 12602 2600
Washington 12602 2600
Wayne 12601 2600
Webster 12602 2600
Wheeler 12601 2600
York 12602 2600

Click here to go back to the list off all State Plane grids