About Tacna, Arizona
Tacna is a census-designated place (CDP) in Yuma County, Arizona, United States. The population was 555 at the 2000 census, and 602 at the 2010 census. It is part of the Yuma Metropolitan Statistical Area.
Tacna is located along Interstate 8 within the Mohawk Valley and just south of the Gila River.
According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.9 km2), all of it land....
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