• Illinois Coordinate System of 1983 Decatur zone (US survey foot)

  EPSG:11249
  Area of use: United States (USA) - Illinois - counties of Dewitt, Macon, Moultrie, Piatt and Shelby.
  

• Illinois Coordinate System of 1983 Olney zone (US survey foot)

  EPSG:11261
  Area of use: United States (USA) - Illinois - counties of Clay, Edwards, Lawrence, Richland, Wabash and Wayne.
  

• Illinois Coordinate System of 1983 Mount Vernon zone (US survey foot)

  EPSG:11260
  Area of use: United States (USA) - Illinois - counties of Clinton, Jefferson, Marion and Washington.
  

• Illinois Coordinate System of 1983 Metropolis zone (US survey foot)

  EPSG:11263
  Area of use: United States (USA)
  

• SPCS83 Illinois East zone (meter)

  EPSG:11231
  Area of use: United States (USA)
  

• SPCS83 Illinois West zone (meter)

  EPSG:11232
  Area of use: United States (USA)
  

• Illinois Coordinate System of 1983 Carbondale zone (US survey foot)

  EPSG:11262
  Area of use: United States (USA)
  

• SPCS83 Illinois East zone (US survey foot)

  EPSG:15387
  Area of use: United States (USA)
  

• SPCS83 Illinois West zone (US survey foot)

  EPSG:15388
  Area of use: United States (USA)
  

• BLM zone 15N (US survey foot)

  EPSG:15915
  Area of use: United States (USA)
  

• Conus Albers

  EPSG:5068
  Area of use: United States (USA)
  

• BLM zone 16N (US survey foot)

  EPSG:15916
  Area of use: United States (USA)
  

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