The value of all land for sale in Jasper County recently was almost $1 million, representing a total of 40 acres of land for sale in Jasper County. Jasper County ranks 100th out of 102 counties in Illinois for the combined amount of land currently advertised for sale. Newton had the most land for sale. Jasper County has a large agricultural economy, with 910 farms recorded in the county during the latest U.S. Census. Farming activities in Jasper County generate annual revenues of $20 million, the majority of which comes from livestock products. Jasper County is Illinois's 57th biggest county (498 square miles). It's located in the Central Illinois region of Illinois.