Washington is a city in Daviess County, Indiana, United States.

[6] It is also the principal city of the Washington, Indiana Micropolitan Statistical Area, which comprises all of Daviess County and had an estimated 2017 population of 31,648.

[10] On November 17, 2013, an EF2 tornado tore through the western edge of the city destroying 20 homes and severely damaging 20 others.

[14] Washington has a humid subtropical climate (Köppen classification Cfa), with four distinct seasons.

Winters are cool to chilly with moderate snowfall, while summers are warm and humid.

Washington Transit System operates bus service in the city on weekdays.

The Helphenstine House, built in 1847, displays Greek Revival architecture styles.

The Robert C. Graham House was owned by an Indiana car manufacturer and was built in 1912.

It is an example of Frank Lloyd Wright's Prairie School of Architecture and is listed on the National Register of Historic Places.

It has marble fireplaces, crystal-glass French windows, a billiards room and parquet floors.