Boyden is a city in Sioux County, Iowa, United States.

[3] According to the United States Census Bureau, the city has a total area of 0.75 square miles (1.94 km2), all land.

There were 295 housing units at an average density of 431.4 per square mile (166.6/km2).

Hispanic or Latino persons of any race comprised 10.6% of the population.

There were 290 housing units at an average density of 386.7 per square mile (149.3/km2).

22.9% of all households were made up of individuals, and 9.7% had someone living alone who was 65 years of age or older.

There were 285 housing units at an average density of 819.8 per square mile (316.5/km2).

23.3% of all households were made up of individuals, and 13.8% had someone living alone who was 65 years of age or older.