EPSG:26772 NAD27 / Illinois West
Projected system (Transverse Mercator) in use: USA - Illinois - SPCS - W. The full definition below, and conversion in one click.
| Code | EPSG:26772 |
|---|---|
| Name | NAD27 / Illinois West |
| Type | Projected system — Transverse Mercator |
| Area of use |
USA - Illinois - SPCS - W United States (USA) - Illinois - counties of Adams; Alexander; Bond; Brown; Bureau; Calhoun; Carroll; Cass; Christian; Clinton; Fulton; Greene; Hancock; Henderson; Henry; Jackson; Jersey; Jo Daviess; Knox; Lee; Logan; Macoupin; Madison; Marshall; Mason; McDonough; Menard; Mercer; Monroe; Montgomery; Morgan; Ogle; Peoria; Perry; Pike; Pulaski; Putnam; Randolph; Rock Island; Sangamon; Schuyler; Scott; St Clair; Stark; Stephenson; Tazewell; Union; Warren; Washington; Whiteside; Winnebago; Woodford. |
| Bounds | W -91,52° · S 36,97° · E -88,92° · N 42,51° |
| Countries | United States |
| Datum | North American Datum 1927 |
| Ellipsoid | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Base geographic system | EPSG:4267 — NAD27 |
| Unit | US survey foot (X east, Y north) |
| Transformation to WGS 84 | NAD27 to WGS 84 (4) (EPSG:1173) — accuracy 10 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 36.666666666666664 | degree |
| Longitude of natural origin | -90.16666666666667 | degree |
| Scale factor at natural origin | 0.999941177 | unity |
| False easting | 500000 | US survey foot |
| False northing | 0 | US survey foot |
proj4 definition
+proj=tmerc +lat_0=36.6666666666667 +lon_0=-90.1666666666667 +k=0.999941177 +x_0=152400.30480061 +y_0=0 +a=6378206.4000000004 +rf=294.9786982139 +units=us-ft +towgs84=-8,160,176 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:26772.
WKT (ESRI format, the .prj content)
PROJCS["NAD_1927_StatePlane_Illinois_West_FIPS_1202",GEOGCS["GCS_North_American_1927",DATUM["D_North_American_1927",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-90.1666666666667],PARAMETER["Scale_Factor",0.999941177],PARAMETER["Latitude_Of_Origin",36.6666666666667],UNIT["US survey foot",0.304800609601219]]Other systems — United States
- EPSG:26760NAD27 / Florida North
- EPSG:26766NAD27 / Georgia East
- EPSG:26767NAD27 / Georgia West
- EPSG:26768NAD27 / Idaho East
- EPSG:26769NAD27 / Idaho Central
- EPSG:26770NAD27 / Idaho West
- EPSG:26771NAD27 / Illinois East
- EPSG:26773NAD27 / Indiana East
- EPSG:26774NAD27 / Indiana West
- EPSG:26775NAD27 / Iowa North
- EPSG:26776NAD27 / Iowa South
- EPSG:26777NAD27 / Kansas North
- EPSG:26778NAD27 / Kansas South
- EPSG:26779NAD27 / Kentucky North
- EPSG:26780NAD27 / Kentucky South
- EPSG:26781NAD27 / Louisiana North
- EPSG:26782NAD27 / Louisiana South
- EPSG:26783NAD27 / Maine East
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.