There was a total of almost $500,000 of land for sale in Foster County, North Dakota, recently on Land.com. The total size of all Foster County farms and ranches for sale was almost 1,000 acres. Foster County ranks 34th out of 53 counties in the Peace Garden State for the total acreage of land currently advertised for sale. Of all locations in Foster County with ranches, farms, hunting land and other rural land and acreage for sale, Carrington featured the most land for sale. Foster County has a large agricultural economy, with 310 farms recorded in the county during the latest U.S. Census. Farming activities in Foster County generate annual revenues of $6 million, most of which is from crops. Foster County is North Dakota's 52nd biggest county (646 square miles). It's located in the Southeast North Dakota region of the state.