Effingham County is a county located in the state of Illinois. Based on the 2010 census, the
population was 34,242. Effingham County was
created on February 15, 1831. The county
seat is
Effingham. The county is named for Lord Edward
Effingham, military officer who resigned from the British Army to avoid
fighting the American colonies.
Effingham County comprises the Effingham, IL Micropolitan Statistical Area.
The county is named for Lord Edward Effingham, who resigned his post in the British Army rather than fight the colonies in 1775.
County QuickFacts: CensusBureau Quick Facts
Effingham County was created on February 15, 1831 (Laws, 1831, p. 51) and was formed from Crawford and Fayette
Counties. Although formally established by law in 1831, an act to organize Effingham County was not approved by the
legislature until December 20, 1832. This act provided for the election of the first county officials in January, 1833.
Present area, or parts of it, formerly included in: Crawford County (1816-1831), Fayette County (1821-1831), Clark
County (1819-1821), Edwards County (1815-1816), Madison County (1812-1815), St. Clair County (1801-1812) and Knox,
Northwest Territory (1790-1801).
The County was named for Lord Effingham, who resigned his commission as general in the British army in 1775, refusing to
serve in the war against the colonies. The County Seat is Effingham . Prior County Seats was Ewington (1833-1860) and
Effingham (1860-Present).
As reported by the Census Bureau, the county has a total area of 480 square miles (1,243 km2) of which 479 square miles (1,240 km2) is land and 1 square miles (3 km2) (0.25%) is water.
Effingham county is located in south Illinois.
Bordering counties are as follows: