Chicago became a city in 1837 and is in between the Great Lakes and the Mississippi River watershed. The Chicago metropolitan area has 10 million people, the third largest population in the United States.Ĭhicago is by Lake Michigan. Chicago is the main city of the Chicago metropolitan area, or Chicagoland. It is the city with the largest population in the Midwestern United States. It is the third largest city in the United States. The coordinates of a location within each zone are defined as a planar coordinate pair related to the intersection of the equator and the zone’s central meridian, and measured in meters.Įlevation above sea level is a measure of a geographic location’s height.Chicago is a city in the U.S. UTM or Universal Transverse Mercator coordinate system divides the Earth’s surface into 60 longitudinal zones. Negative longitude values correspond to the geographic locations west of the prime meridian (abbrev. Positive longitude values correspond to the geographic locations east Longitude is counted from the prime meridian ( IERS Reference Meridian for WGS 84) and varies from −180° to 180°. Negative latitude values correspond to the geographic locations south of the Equator (abbrev. Positive latitude values correspond to the geographic locations north of the Equator (abbrev. The latitude of the Equator is 0° the latitude of the South Pole is −90° GPS systems widely use coordinates in degrees and decimal minutes, or in decimal degrees. The canonical form of latitude and longitude representation uses degrees (°), minutes (′), and seconds (″). Geographic coordinates (latitude and longitude) define a position on the Earth’s surface. Satellite navigation system (the Global Positioning System). WGS 84 coordinate reference system is the latest revision of the World Geodetic System, which is used in mapping and navigation, including GPS
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