Wallingford is a city in Emmet County, Iowa, United States.

[3] According to the United States Census Bureau, the city has a total area of 0.97 square miles (2.51 km2), all land.

There were 78 housing units at an average density of 79.0 per square mile (30.5/km2).

There were 87 housing units at an average density of 89.7 per square mile (34.6/km2).

26.6% of all households were made up of individuals, and 6.3% had someone living alone who was 65 years of age or older.

The racial makeup of the city was 96.19% White, 2.86% Native American, 0.95% from other races.

24.4% of all households were made up of individuals, and 10.3% had someone living alone who was 65 years of age or older.

About 4.9% of families and 9.4% of the population were below the poverty line, including 15.5% of those under the age of eighteen and 17.4% of those 65 or over.

[9] It was established on July 1, 1997, by the merger of the Estherville and Lincoln Central school districts.