Caldwell is a town[3] in St. Francis County, Arkansas, United States.

As of the census[5] of 2000, there were 465 people, 174 households, and 140 families residing in the town.

There were 190 housing units at an average density of 24.4 units/km2 (63 units/sq mi).

There were 174 households, out of which 35.6% had children under the age of 18 living with them, 70.7% were married couples living together, 8.6% had a female householder with no husband present, and 19.0% were non-families.

15.5% of all households were made up of individuals, and 6.9% had someone living alone who was 65 years of age or older.