Essex is a city in Page County, Iowa, United States.

The Chicago, Burlington and Quincy Railroad arrived in Essex in 1871.

According to the United States Census Bureau, the city has a total area of 1.51 square miles (3.91 km2), all land.

[5] As of the census of 2020,[7] there were 722 people, 339 households, and 207 families residing in the city.

There were 360 housing units at an average density of 239.3 per square mile (92.4/km2).

There were 372 housing units at an average density of 246.4 per square mile (95.1/km2).

29.7% of all households were made up of individuals, and 17.7% had someone living alone who was 65 years of age or older.

There were 393 housing units at an average density of 260.8 per square mile (100.7/km2).

23.6% of all households were made up of individuals, and 13.2% had someone living alone who was 65 years of age or older.