Known as the Heart of Illinois, Peoria County is at the center of a multiple county region along the Illinois River midway between Chicago and St. Louis. Peoria County, Illinois (est. pop. 186,000) combines big city assets with a small town lifestyle and is an attractive location for young professionals, families, and businesses. Peoria County administration is located in the Peoria County Courthouse. Other large facilities include the Peoria County Jail, Heddington Oaks Long-Term Care Facility, and the City/County Health Department.