[5] In 2016, the Guinness World Book of Records certified the State Theatre in Washington, Iowa, as the "world's oldest continually operating cinema theatre".

[6] According to the United States Census Bureau, the city has a total area of 4.92 square miles (12.74 km2), all land.

There were 3,280 housing units at an average density of 623.3 per square mile (240.7/km2).

Hispanic or Latino persons of any race comprised 13.8% of the population.

There were 3,301 housing units at an average density of 670.9 per square mile (259.0/km2).

33.8% of all households were made up of individuals, and 16.6% had someone living alone who was 65 years of age or older.

There were 3,132 housing units at an average density of 646.3 per square mile (249.5/km2).

30.9% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.

Washington is governed by a six-member city council headed by a mayor.

The city council consists of four ward counselors and two at-large members.