New Site is a census-designated place and unincorporated community in Prentiss County, Mississippi, United States. Its population was 851 at the 2010 U.S. census. Its ZIP code is 38859.
The settlement once had a post office. The population in 1900 was 21.
It was first named as a CDP in the 2020 Census which listed a population of 122.
It is in the Prentiss County School District.