 Logan Avenue county route 40 
Genoa Road (T-40) 
Garden Prairie Road county route 41 
Poplar Grove Road county route 32 
Capron Road (T-41)

In recent years, average temperatures in the county seat of Belvidere have ranged from a low of in January to a high of in July, although a record low of was recorded in January 1979 and a record high of was recorded in July 1936.Average monthly precipitation ranged from in February to in June.As of the 2010 United States Census, there were 54,165 people, 18,505 households, and 14,273 families residing in the county.