Sedgwick is a town in Lawrence County, Arkansas, United States.

Arkansas Highway 228 leads northeast from Sedgwick 9 miles (14 km) to U.S. Route 412 at Light.

There were 51 housing units at an average density of 372.7 per square mile (143.9/km2).

25.0% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older.

There were no families and 4.0% of the population living below the poverty line, including no under eighteens and 22.2% of those over 64.