Lacona is a city in Warren County, Iowa, United States.

[5] According to the United States Census Bureau, the city has a total area of 0.36 square miles (0.93 km2), all of it land.

There were 151 housing units at an average density of 457.9 per square mile (176.8/km2).

Hispanic or Latino persons of any race comprised 0.6% of the population.

28.8% of all households were made up of individuals, 9.1% had someone living alone who was 65 years old or older.

There were 165 housing units at an average density of 458.3 per square mile (177.0/km2).

28.9% of all households were made up of individuals, and 11.1% had someone living alone who was 65 years of age or older.

There were 159 housing units at an average density of 438.7 per square mile (169.4/km2).

31.8% of all households were made up of individuals, and 19.9% had someone living alone who was 65 years of age or older.