Wellton is a town in Yuma County, Arizona, United States. According to 2006 Census Bureau estimates, the population of the town is 1,862. It is part of the Yuma Metropolitan Statistical Area.
Wellton is located at 32°40′17″N 114°8′27″W / 32.67139°N 114.14083°W / 32.67139; -114.14083 (32.671436, -114.140972).
According to the United States Census Bureau, the town has a total area of 2.5 square miles (6.5 km²), all of it land.