Newhall is a city in Benton County, Iowa, United States.

Newhall was founded in 1881, following construction of the Chicago, Milwaukee and St. Paul Railroad through the territory.

[3] According to the United States Census Bureau, the city has a total area of 0.32 square miles (0.83 km2), all land.

There were 396 housing units at an average density of 1,313.0 per square mile (506.9/km2).

Hispanic or Latino persons of any race comprised 1.5% of the population.

There were 376 housing units at an average density of 1,175.0 per square mile (453.7/km2).

25.5% of all households were made up of individuals, and 13.6% had someone living alone who was 65 years of age or older.

There were 368 housing units at an average density of 1,232.0 per square mile (475.7/km2).

27.5% of all households were made up of individuals, and 17.5% had someone living alone who was 65 years of age or older.