Sedalia is an unincorporated town, a post office, and a census-designated place (CDP) located in and governed by Douglas County, Colorado, United States. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. Sedalia is located in northern Douglas County along U.S. Route 85, which leads 8 miles (13 km) southeast to Castle Rock, the county seat, and north 24 miles (39 km) to downtown Denver. The CDP has an area of 873 acres (3.531 km2).
Major highways in Sedalia include U.S. Route 85 and Colorado State Highway 67. US 85 forms a border to the north. Colorado State Highway 67 and 105 conjuncts immediately to the south of Sedalia. Manhart Avenue runs north and south and serves as Main street. Plum Avenue emerges west from Manhart Avenue. Plum Creek flows from Chatfield Reservoir and passes through the town.
Sedalia is home to Sedalia Museum and Gardens located at Platte Avenue. Like most small towns, Sedalia has very few buildings and establishments with Sedalia Elementary School, Summit Church, Whistle stop Quilts crafts creations, SFR Gift Shop Wholesale, Western Sling Company and Rustic Lumber Company. Local businesses in the town include Front Range Tire, Front Runner Rubber Mulch, All-Grip, Restruction Corporation, Noble Truss Colorado Inc, Katanic & Company llc, and DRC Construction Services Inc. Restaurants within Sedalia include Wide Open Saloon, O’Brien’s Cafe, Bud’s Cafe & Bar, and Sedalia Bakery.