Hibernia is an unincorporated community and census-designated place located along County Route 513 in Rockaway Township of Morris County, in the U.S. state of New Jersey. The area is served as United States Postal Service ZIP Code 07842. The community takes its name from Hibernia, the classical name for Ireland. As of the 2020 United States census, the area had a population of 208. The Hibernia mines, a series of iron mines worked from pre-Revolutionary times until 1916, are located here.