Hazleton is a city in Buchanan County, Iowa, United States.

[2] The original town was established in 1853 when E. W. Tenney opened a store.

A post office opened soon after and was named "Hazelton", because the community was in a hazelnut grove.

There were 357 housing units at an average density of 446.6 per square mile (172.5/km2).

Hispanic or Latino persons of any race comprised 2.9% of the population.

There were 402 housing units at an average density of 536.0 per square mile (207.0/km2).

35.3% of all households were made up of individuals, and 11.3% had someone living alone who was 65 years of age or older.

There were 409 housing units at an average density of 549.5 per square mile (212.2/km2).

26.5% of all households were made up of individuals, and 11.3% had someone living alone who was 65 years of age or older.