- P.O. Box 1217, North Sioux City, SD 57049
- 605-232-0262
A unique 600-acre gated community where nature, thoughtful planning, and family living come together in Jefferson, South Dakota.
Wynstone began as a vision in 1995 — roughly 600 acres of rolling South Dakota countryside acquired from the Dailey family. Development broke ground in 1997, and the community has grown into a private, gated neighborhood of custom homes.
Bordered by open plains to the north, the Adams Nature Preserve to the east, the Missouri River to the south, and bluffs to the west, Wynstone sits just two miles west of McCook Lake — offering residents a rare blend of natural beauty and modern, family-friendly living.
Acres of countryside
Custom home sites
Development began
West of McCook Lake
Amenities designed for an active, connected community.
A safe, welcoming place for kids to play.
Regulation court for the community.
Regulation pickleball for all ages.
Scenic water features throughout Wynstone.
Shelter with picnic areas for gatherings.
Direct access to Adams Nature Preserve trails.
Mon–Fri: 6–9 AM & 3–7 PM
Sat–Sun: closed (except events)
Hours may vary for weather, holidays, repairs, and special occasions such as Sunday open houses.
Thoughtfully planned, financially sound, and carefully protected.
Infrastructure was financed by the developer — residents inherit no long-term community debt.
Comprehensive planning for flood control, water, and utilities across all 600 acres.
Overseen by an active HOA and Architectural Review Committee to safeguard your investment.
See Phase I and Phase II lots, roads, lakes, and amenities across Wynstone.
A full gallery of Wynstone’s lakes, parks, and trails is on the way.
We’re collecting current photos of the community to feature here.
