Smithland is a city in Woodbury County, Iowa, United States.

[3] In 1857, clashes between settlers and Native Americans began at what is now Smithland which would afterward culminate in the Spirit Lake Massacre.

According to the United States Census Bureau, the city has a total area of 0.37 square miles (0.96 km2), all land.

There were 102 housing units at an average density of 318.0 per square mile (122.8/km2).

There were 109 housing units at an average density of 294.6 per square mile (113.7/km2).

32.0% of all households were made up of individuals, and 21% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 99.10% White, 0.45% Native American, and 0.45% from two or more races.

27.7% of all households were made up of individuals, and 15.8% had someone living alone who was 65 years of age or older.

About 4.0% of families and 6.4% of the population were below the poverty line, including 7.0% of those under the age of eighteen and none of those 65 or over.