Delphos[a] is a former city in Ringgold County, Iowa, United States.

Delphos was founded in 1880 as Borneo on the Leon, Mount Ayr and Southwestern Railroad.

The community was the only incorporated town in Ringgold County to not have a bank, though it once had stores, a blacksmith shop, and a hotel.

[6] Few notable landmarks other than homes remain in town, however the former church buildings are still standing as of 2022.

According to the United States Census Bureau, the city has a total area of 0.22 square miles (0.57 km2), all land.

There were 14 housing units at an average density of 62.9 per square mile (24.3/km2).

There were 15 housing units at an average density of 68.2 per square mile (26.3/km2).

36.4% of all households were made up of individuals, and 18.2% had someone living alone who was 65 years of age or older.

41.7% of all households were made up of individuals, and 25.0% had someone living alone who was 65 years of age or older.