Piatt County

administration
Piatt County Courthouse, listed on the NRHP since 2009 under No. 08000400
US state :	Illinois
Administrative headquarters :	Monticello
Address of the administrative headquarters:	County Courthouse 101 West Washington Street Monticello, IL 61856-1672
Foundation :	January 20, 1841
Made up from:	DeWitt County Macon County
Area code :	001 217
Demographics
Residents :	16,729 (2010)
Population density :	14.7 inhabitants / km ²
geography
Total area :	1140 km²
Water surface :	1 km²
map

Website : www.piattcounty.org

The Piatt County is a county in the US -amerikanischen State Illinois . In 2010 , the county had 16,729 residents and a population density of 14.7 people per square kilometer. The county seat is Monticello .

geography

The county is located in central eastern Illinois, approximately 70 kilometers from the geographic center of the state. It has an area of 1140 square kilometers, one square kilometer of which is water.

The county is traversed from northeast to southwest by the Sangamon River , a left tributary of the Illinois River .

The following neighboring counties border Piatt County:

	McLean County
DeWitt County		Champaign County
Macon County	Moultrie County	Douglas County

history

Piatt County was formed on January 20, 1841 from the southeastern part of DeWitt County and the northeastern part of Macon County. It was named after Benjamin Piatt , a pioneer, lawyer, and attorney general for the Illinois Territory from 1810 to 1813.

Demographic data

Population development
Census	Residents	± in%
1850	1606	-
1860	6127	281.5%
1870	10,953	78.8%
1880	15,583	42.3%
1890	17,026	9.3%
1900	17,706	4%
1910	16,376	-7.5%
1920	15,714	-4%
1930	15,588	-0.8%
1940	14,659	-6%
1950	13,970	-4.7%
1960	14,960	7.1%
1970	15,509	3.7%
1980	16,581	6.9%
1990	15,548	-6.2%
2000	16,365	5.3%
2010	16,729	2.2%
Before 1900 1900–1990 2000 2010

According to the 2010 census , Piatt County had 16,729 people in 6,507 households. The population density was 14.7 inhabitants per square kilometer. Statistically, 2.54 people lived in each of the 6,507 households.

The racial the population was composed of 97.9 percent white, 0.6 percent African American, 0.2 percent Native American, 0.4 percent Asian and other ethnic groups; 0.9 percent were descended from two or more races. Hispanic or Latino of any race was 1.2 percent of the population.

23.5 percent of the population were under 18 years old, 59.8 percent were between 18 and 64 and 16.7 percent were 65 years or older. 50.4 percent of the population was female.

The median income for a household was 58,837 USD . The per capita income was $ 27,452. 6.5 percent of the population lived below the poverty line.

Localities in Piatt County

City

Monticello

Villages

Census-designated places (CDP)

Other Unincorporated Communities

^{1 - partially in Douglas County}

structure

Townships in Piatt Counties

Piatt County is divided into eight townships :

Township	Population (2010)	FIPS
Bement Township	1893	17-05157
Blue Ridge Township	1480	17-06808
Cerro Gordo Township	2046	17-12275
Goose Creek Township	790	17-30523
Monticello Township	5906	17-50257
Sangamon Township	2357	17-67587
Unity Township	1418	17-76888
Willow Branch Township	839	17-81906