Map of Henderson County, Illinois

Henderson County is a county located in the U.S. state of Illinois. According to the 2010 United States Census, it has a population of 7,331. Its county seat is Oquawka.

Henderson County is part of the Burlington, IA–IL Micropolitan Statistical Area.

Henderson County overview:
Name:	Henderson County
FIPS code:	17-071
State:	Illinois
Founded:	1841
Named for:	Richard Henderson
Seat:	Oquawka
Total Area:	395 sq mi (1,020 km²)
Land Area:	379 sq mi (980 km²)
Total Population:	7,331
Population Density:	19/sq mi (7.2/km²)
Time zone:	UTC−6 (Central)
Summer Time Zone (DST):	UTC−5 (CDT)
Website:	www.hendersoncountyedc.com

Henderson County location map. Where is Henderson County?

Henderson County location on the U.S. Map. Where is Henderson County. — Location of Henderson County in the the United States.

Henderson County location on the Illinois map. Where is Henderson County. — Location of Henderson County in Illinois.

History

Henderson County was formed in 1841 from a portion of Warren County. It was named for Henderson County, Kentucky, which was named for Richard Henderson, founder of the Transylvania Company, an early attempt to organize what later became Kentucky around 1775.

Henderson County at the time of its creation in 1841

Henderson County Road Map

Henderson CountyStreet Map. — Street map of Henderson County, Illinois. Source: OpenStreetMap (OSM)

Henderson CountyMap — Henderson Countypolitical map.

Geography

According to the US Census Bureau, the county has a total area of 395 square miles (1,020 km), of which 379 square miles (980 km) is land and 16 square miles (41 km) (4.1%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Oquawka have ranged from a low of 15 °F (−9 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −26 °F (−32 °C) was recorded in February 1996 and a record high of 105 °F (41 °C) was recorded in August 1983. Average monthly precipitation ranged from 1.31 inches (33 mm) in January to 4.48 inches (114 mm) in July.