List of counties in New Jersey

There are 21 counties in the U.S. state of New Jersey. These counties together contain 564 municipalities, or administrative entities composed of clearly defined territory; 252 boroughs, 52 cities, 15 towns, 241 townships, and 4 villages.^[1] In New Jersey, a county is a local level of government between the state and municipalities. County government in New Jersey includes a Board of County Commissioners,^[2] sheriff, clerk, and surrogate (responsible for uncontested and routine probate),^[3] all of which are elected officials. Counties organized under the Optional County Charter Law may also have an elected county executive.^[4] Counties traditionally perform state-mandated duties such as the maintenance of jails, parks, and certain roads.^[5] The site of a county's administration and courts is called the county seat.