La Fargeville is a hamlet and census-designated place in the town of Orleans in Jefferson County, New York, United States. The population was 608 at the 2010 census. The hamlet is named after John …La Fargeville is a hamlet and census-designated place in the town of Orleans in Jefferson County, New York, United States. The population was 608 at the 2010 census. The hamlet is named after John Frederick La Farge, one of the early proprietors of the town. La Fargeville was once a village, but dissolved its municipal corporation in 1922.