Fertile is a city in Worth County, Iowa, United States.

A land speculator created a fictional town nearby and named it Fontanelle, though the locals called it Putsey.

Fertile was established in 1877, and named for the quality of the soil in the valley it was located in.

[3][4] Rhodes Mill is listed on the National Register of Historic Places.

[5] According to the United States Census Bureau, the city has a total area of 0.94 square miles (2.43 km2), all land.

There were 161 housing units at an average density of 171.3 per square mile (66.1/km2).

19.6% of all households were made up of individuals, and 8.1% had someone living alone who was 65 years of age or older.

There were 161 housing units at an average density of 171.3 per square mile (66.1/km2).

26.2% of all households were made up of individuals, and 17.4% had someone living alone who was 65 years of age or older.

Residents are part of the Forest City Community School District.