Walworth County, organized in 1873, is located in north-central South Dakota along the Missouri River. The county seat, Selby, is surrounded by small towns like Mobridge and Java. The region combines rich farmland with scenic river bluffs and lakes, making it popular for both agriculture and recreation. Mobridge, the largest town, sits directly on the river and serves as a fishing and boating hub. The county’s economy mixes farming, ranching, and tourism. Housing includes ranch-style homes, modest townhouses, and lakefront cabins. Median home prices are around $190 K–$260 K, while properties near the river can reach $350 K–$500 K +. Building new costs roughly $190–$210 per sq ft, or $375 K–$425 K for average builds. Walworth County is primarily rural, with strong community bonds and wide-open spaces. The nearest larger city is Aberdeen, about 90 miles east. Residents enjoy peaceful living, river access, and affordable homeownership—ideal for retirees, anglers, and anyone seeking quiet Dakota charm.