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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 Minnesota

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

County or City SPCS27 Code SPCS83 Code
Aitkin 12202 2202
Anoka 12203 2203
Becker 12202 2202
Beltrami 12201 2201
Benton 12202 2202
Big Stone 12203 2203
Blue Earth 12203 2203
Brown 12203 2203
Carlton 12202 2202
Carver 12203 2203
Cass 12202 2202
Chippewa 12203 2203
Chisago 12202 2202
Clay 12202 2202
Clearwater 12201 2201
Cook 12201 2201
Cottonwood 12203 2203
Crow Wing 12202 2202
Dakota 12203 2203
Dodge 12203 2203
Douglas 12202 2202
Faribault 12203 2203
Fillmore 12203 2203
Freeborn 12203 2203
Goodhue 12203 2203
Grant 12202 2202
Hennepin 12203 2203
Houston 12203 2203
Hubbard 12202 2202
Isanti 12202 2202
Itasca 12201 2201
Jackson 12203 2203
Kanabec 12202 2202
Kandiyohi 12203 2203
Kittson 12201 2201
Koochiching 12201 2201
Lac Qui Parle 12203 2203
Lake 12201 2201
Lake of the Woods 12201 2201
Le Sueur 12203 2203
Lincoln 12203 2203
Lyon 12203 2203
McLeod 12203 2203
Mahnomen 12201 2201
Marshall 12201 2201
Martin 12203 2203
Meeker 12203 2203
Mille Lacs 12202 2202
Morrison 12202 2202
Mower 12203 2203
Murray 12203 2203
Nicollet 12203 2203
Nobles 12203 2203
Norman 12201 2201
Olmsted 12203 2203
Otter Tail 12202 2202
Pennington 12201 2201
Pine 12202 2202
Pipestone 12203 2203
Polk 12201 2201
Pope 12202 2202
Ramsey 12203 2203
Red Lake 12201 2201
Redwood 12203 2203
Renville 12203 2203
Rice 12203 2203
Rock 12203 2203
Roseau 12201 2201
St. Louis 12201 2201
Scott 12203 2203
Sherburne 12203 2203
Sibley 12203 2203
Stearns 12202 2202
Steele 12203 2203
Stevens 12202 2202
Swift 12203 2203
Todd 12202 2202
Traverse 12202 2202
Wabasha 12203 2203
Wadena 12202 2202
Waseca 12203 2203
Washington 12203 2203
Watonwan 12203 2203
Wilkin 12202 2202
Winona 12203 2203
Wright 12203 2203
Yellow Medicine 12203 2203

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