Set in southwestern North Dakota, Slope County is as far from civilization as pretty much anywhere in the lower 48—which goes a long way to demonstrating why it registered the fewest inhabitants (727) than any other county in North Dakota during the last U.S. Census count. Remarkably, the county is the size of Rhode Island, but while some 175,000 Rhode Islanders live in the state capital, Providence, less than three dozen can call the Slope County Seat, Amidon, home. In fact, Amidon is so small that Rand McNally doesn't index it in their U.S. road atlas. Slope County ranks 38th based on the total amount of acres of land for sale among all the counties in North Dakota. Of all locations in Slope County with farms, ranches, and rural real estate for sale, Marmarth featured the most land for sale. Agriculture and farming drives the Slope County economy, with 221 farms recorded in the county during the U.S. Census in 2012. Farming activities in Slope County generate annual revenues of $4 million, most of which is from crops. Slope County is North Dakota's 26th biggest county (1,219 square miles). It's located in the West North Dakota region of the state.