Fredonia is a city in Louisa County, Iowa, United States.

Fredonia was laid out in 1836, by Alvin Clark, who had a squatters claim on the land and was surveyed by John Gilliland.

The community of Columbus Junction lies to the southwest across the Iowa River.

[6] According to the United States Census Bureau, the city has a total area of 0.17 square miles (0.44 km2), all land.

There were 80 housing units at an average density of 531.4 per square mile (205.2/km2).

There were 93 housing units at an average density of 547.1 per square mile (211.2/km2).

24.1% of all households were made up of individuals, and 8.4% had someone living alone who was 65 years of age or older.

There were 92 housing units at an average density of 599.5 per square mile (231.5/km2).

24.1% of all households were made up of individuals, and 9.2% had someone living alone who was 65 years of age or older.

About 7.6% of families and 6.8% of the population were below the poverty line, including 11.5% of those under the age of eighteen and 4.2% of those 65 or over.