Cities and Towns in Day County, South Dakota

Founded in 1879, Day County is one of 66 counties in the state of South Dakota. Historically, Day County was formed from Clark County. The city of Webster is the county seat. With FIPS code of 37, Day County has a population of 5,414 and area of 1,029 square miles (2,665 km²).

List of all cities in Day County, SD alphabetically

City/Town	Postal Code	Area Code
Andover, SD	57422	605
Blue Dog Lake, SD	57273	605
Bristol, SD	57219	605
Butler, SD	57219	605
Grenville, SD	57239	605
Holmquist, SD	57274	605
Lily, SD	57274	605
Pierpont, SD	57468	605
Roslyn, SD	57261	605
Waubay, SD	57273	605
Webster, SD	57274	605

Major Cities and Towns in Day County, South Dakota

Webster

Area, Population, and Zip Codes

• Area: Approximately 2.0 square miles
• Population: Around 1,800 (2023 estimate)
• Zip Code: 57274
• Latitude: 45.3325° N
• Longitude: 97.5244° W

Location and History

Webster, the county seat of Day County, is located in northeastern South Dakota. Founded in the early 1880s, the city was named after Daniel Webster, a prominent American statesman. Its development was spurred by the arrival of the railroad, which made it a central hub for trade and agriculture in the region. Webster has a rich history as a community that has supported farming and rural lifestyles while fostering a sense of cultural and civic pride.

Major Schools and Landmarks

The Webster Area School District serves the town, providing comprehensive K-12 education and extracurricular programs. Key landmarks include the Day County Courthouse, a historic structure that highlights the town’s importance in regional governance. Nearby Pickerel Lake and Waubay Lake are popular recreational spots, offering opportunities for fishing, boating, and camping. The International Vinegar Museum, located in Webster, adds a unique cultural touch to the town, drawing visitors from across the state.

Waubay

Area, Population, and Zip Codes

• Area: Approximately 0.6 square miles
• Population: Around 550 (2023 estimate)
• Zip Code: 57273
• Latitude: 45.3361° N
• Longitude: 97.3011° W

Location and History

Waubay, located southeast of Webster, is a historic town in Day County known for its proximity to some of the region’s largest lakes. The town was established in the late 19th century and its name, derived from the Sioux word for “place of nesting birds,” reflects the area’s rich natural environment. Waubay has long been a hub for fishing, hunting, and outdoor recreation, attracting visitors and supporting the local economy.

Major Schools and Landmarks

Waubay School District provides education to local students, emphasizing community involvement and student success. Major landmarks include Waubay National Wildlife Refuge, a haven for migratory birds and a key site for wildlife observation. The refuge, along with nearby lakes such as Waubay Lake and Bitter Lake, offers excellent opportunities for fishing, boating, and camping. The town also hosts annual events that celebrate its history and natural beauty.

Roslyn

Area, Population, and Zip Codes

• Area: Approximately 0.2 square miles
• Population: Around 200 (2023 estimate)
• Zip Code: 57261
• Latitude: 45.4986° N
• Longitude: 97.4961° W

Location and History

Roslyn, located northwest of Webster, is a small town in Day County with a rich Scandinavian heritage. Established in 1914, the town grew as a farming community during the expansion of the Great Northern Railway. The town’s cultural history is deeply rooted in its immigrant settlers, who brought traditions and values that shaped Roslyn’s identity.

Major Schools and Landmarks

Students from Roslyn typically attend schools in Webster or nearby towns. Landmarks include the Roslyn Museum, which preserves the town’s history, and the surrounding farmland that showcases its agricultural roots. Nearby Fort Sisseton Historic State Park and Pickerel Lake provide additional cultural and recreational opportunities, making Roslyn a serene and historically significant part of Day County.