- Location: Bollinger County, Missouri
- Legal status: Village
- Population: 197 (Change since 1990: +42.8%)
- Previously known as: Smithville
- Located at the intersection of Route K, Route EE, and Route WW
- Latitude: 37°30'51" N (+37.5141)
- Longitude: 89°54'34" W (-89.9094)
- Elevation: 642 feet above sea level
- Public Land Survey: T. 33 N., R. 10 E., Sec. 26
- Civil township: Whitewater
- Land area: 0.63 square miles (404.8 acres)
As the crow flies, Sedgewickville is...
| Year | Population | Percent change |
|---|
| 1940 | 100 | -- |
| 1950 | 92 | -8.0% |
| 1960 | 91 | -1.1% |
| 1970 | 92 | +1.1% |
| 1980 | 115 | +25.0% |
| 1990 | 138 | +20.0% |
| 2000 | 197 | +42.8% |