Long Valley is an unincorporated community and census-designated place (CDP) located within Washington Township, in Morris County, in the U.S. state of New Jersey. Once known as German Valley from its foundation during the colonial era, the community was renamed in response to anti-German sentiment during World War I. As of the 2010 United States Census, the CDP's population was 1,879.
Zip Codes in Long Valley, NJ that we also serve: 07853