Union County, New Jersey Genealogy

United States &gt; New Jersey &gt; Union County

Parent County

 * 9 March 1857, created from Essex County.

Boundary Changes

 * 1860, received part of Woodbridge twp., Middlesex County as part of Rahway twp.
 * 1871, Essex County boundary clarified
 * 1871, Plainfield boundary with Piscataway twp. of Middlesex County changed
 * 1876, boundaries with Essex and Somerset counties clarified
 * 1882, Essex County boundary clarified and again in 1892
 * 1891, part of Millburn twp., Essex County to Springfield twp. and returned in 1958.

Neighboring Counties
Essex | Hudson | Middlesex | Morris | Somerset | Richmond (Staten Island) county, New York

Obtaining Copies of County Probate Records
Copies of recorded probate records and the estate files can be obtained from the surrogate's offices for a fee. Addresses of surrogate's offices are found in:


 * Eichholz, Alice, Editor. Ancestry's Red Book: American State, County, and Town Sources. Revised Edition. Salt Lake City, Utah: Ancestry, 1992. (.) Explains state-by-state history, vital records, census, background sources, periodicals, archives, libraries, societies, maps, land, probate, court, tax, cemetery, church, and military records. Includes county boundary map and table which shows when each county was created and the parent counties.

In addition, copies of the original wills, administrations, inventories, and guardianships sent to Trenton since 1901 can be ordered from:


 * Clerk of the Superior Court
 * Records Information Center
 * P.O. Box 967
 * Trenton, NJ 08625-0967
 * Telephone: 609-292-4978
 * Fax: 609-777-0094
 * Internet: http://www.answers.com/topic/new-jersey-superior-court

Public Libraries

 * Plainfield Public Library 800 Park Avenue Plainfield, NJ 07060 Telephone: 908-757-1111 The Local History Department offers newspapers, city directories, local histories, church records, biographies, and more.

Family History Centers

 * Introduction to LDS Family History Centers
 * Scotch Plains New Jersey Family History Center

Web Sites

 * USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.