Cities and Towns in Hamlin County, South Dakota
Founded in 1873, Hamlin County is one of 66 counties in the state of South Dakota. Historically, Hamlin County was formed from Deuel County. The city of Hayti is the county seat. With FIPS code of 57, Hamlin County has a population of 6,255 and area of 511 square miles (1,323 km²).
List of all cities in Hamlin County, SD alphabetically
| City/Town | Postal Code | Area Code |
| Alsville, SD | 57248 | 605 |
| Bryant, SD | 57221 | 605 |
| Castlewood, SD | 57223 | 605 |
| Dempster, SD | 57234 | 605 |
| Estelline, SD | 57234 | 605 |
| Hayti, SD | 57241 | 605 |
| Hazel, SD | 57242 | 605 |
| Kones Corner, SD | 57223 | 605 |
| Lake Norden, SD | 57248 | 605 |
| Thomas, SD | 57241 | 605 |
Major Cities and Towns in Hamlin County, South Dakota
Hayti
Area, Population, and Zip Codes
- Area: Approximately 0.4 square miles
- Population: Around 400 (2023 estimate)
- Zip Code: 57241
- Latitude: 44.6625° N
- Longitude: 97.2028° W
Location and History
Hayti, the county seat of Hamlin County, is located in northeastern South Dakota. Established in the late 19th century, the town’s name is believed to be derived from Haiti, possibly reflecting the settlers’ aspirations for prosperity. Hayti grew as a farming and ranching hub, supported by its location near fertile plains and major transportation routes. The town remains a small but significant center for the surrounding agricultural community.
Major Schools and Landmarks
The Hamlin School District serves Hayti and the surrounding area, providing K-12 education with a focus on academic and athletic opportunities. Key landmarks include Lake Poinsett, located just south of the town, which offers recreational activities like fishing, boating, and camping. The Hamlin County Courthouse, situated in Hayti, stands as a historic symbol of the town’s administrative importance. Local events and fairs celebrate Hayti’s agricultural heritage and close-knit community.
Castlewood
Area, Population, and Zip Codes
- Area: Approximately 0.8 square miles
- Population: Around 700 (2023 estimate)
- Zip Code: 57223
- Latitude: 44.7206° N
- Longitude: 97.0311° W
Location and History
Castlewood, located in the southeastern part of Hamlin County, was established in the late 19th century as a result of the railroad expansion. The town’s name reflects the settlers’ admiration for its scenic location along the Big Sioux River valley. Castlewood developed as a thriving agricultural community, with its economy centered on grain and livestock production.
Major Schools and Landmarks
Castlewood School District provides education for students in the town and surrounding rural areas, offering comprehensive programs and extracurricular activities. Landmarks include Castlewood City Park, which serves as a community gathering place, and the nearby Big Sioux River, which provides opportunities for fishing and outdoor recreation. The town also hosts annual festivals that highlight its rich history and strong community spirit.
Lake Norden
Area, Population, and Zip Codes
- Area: Approximately 1.0 square mile
- Population: Around 500 (2023 estimate)
- Zip Code: 57248
- Latitude: 44.5742° N
- Longitude: 97.2081° W
Location and History
Lake Norden, situated in southern Hamlin County, was established in the early 20th century and named after the nearby lake. The town grew as a result of its location near the railroad and fertile farmland. Over the years, Lake Norden has developed as a center for agriculture and industry, including dairy production, which remains a cornerstone of its economy.
Major Schools and Landmarks
Lake Norden is part of the Hamlin School District, with students attending schools in nearby Hayti. Notable landmarks include the Lake Norden Community Center, a hub for events and gatherings, and the Prairie Lakes Hospital Museum, which preserves the history of rural healthcare in the area. The nearby lakes, including Lake Poinsett and Lake Norden, provide recreational activities and scenic beauty, attracting both residents and visitors.
