Calhoun is a Census-designated place in Ouachita Parish, Louisiana, United States. It is named after Archibald Calhoun, who was an original settler and landowner. Its elevation is 177 feet, and it is located at 32°30′46″N 92°21′31″W / 32.51278°N 92.35861°W / 32.51278; -92.35861. Calhoun is unincorporated and is governed by the parish through a board of commissioners known as the Police Jury. It is a census designated place and at the time of the most recent United States Census Survey, the population was 1,965.Calhoun is located in a rural area with a landscape mixture of hills and woodlands on the former transcontinental route U.S. 80 near Interstate 20, approximately 10 miles west of West Monroe.