List of counties in New Jersey



The of  has 21 counties.

New Jersey was governed by two separate groups of proprietors as two distinct provinces, and, for the 28 years between 1674 and 1702. New Jersey's first counties were created as administrative districts with in each province, with East Jersey split in 1675 into, , and  counties, while West Jersey's initial counties of  and  date to 1681.

County information
The (FIPS) code, which is used by the United States government to uniquely identify counties, is provided with each entry. The FIPS code for each county links to census data for that county.