Decatur is a village in Burt County, Nebraska, United States, adjacent to the upper Missouri River.

The area was long occupied by the Omaha Native Americans, who settled along the creeks and river Explorers Meriwether Lewis and William Clark passed through the area in 1804 as their expedition traveled via the upper Missouri River on their way to and from the Pacific Coast, in their exploration of the Louisiana Purchase.

A former schoolteacher in New Jersey and New York, he had abandoned his wife and two children when he migrated to the West.

[6] In 1854, the U.S. Commissioner of Indian Affairs purchased 300,000 acres of land from the Omaha, including the area which is now Decatur.

The other incorporators included Thomas Whiteacre, T. H. Hineman, George Mason, and Herman Glass.

Peter Sarpy helped lay out the town, which developed around his Indian trading post at the mouth of Wood Creek.

[6] According to the United States Census Bureau, the village has a total area of 0.90 square miles (2.33 km2), all land.

38.8% of all households were made up of individuals, and 21.7% had someone living alone who was 65 years of age or older.

33.1% of all households were made up of individuals, and 17.3% had someone living alone who was 65 years of age or older.