Search Warren County Genealogy

Warren County is in northwestern New Jersey along the Delaware River. The county seat is Belvidere. Formed in 1824, Warren County has over two hundred years of recorded genealogy data. Researchers searching for birth, death, marriage, land, or probate records in Warren County can visit the Clerk's office, the Surrogate, or the Warren County Historical and Genealogical Society. Each holds different records that help piece together family histories in this rural corner of the state.

Warren County Clerk Genealogy Records

The Warren County Clerk's Office is at 413 2nd Street, Belvidere, NJ 07823-1500. Phone is 908-475-6211. The Clerk holds land records, vital records, and other public documents used for genealogy research in Warren County. Deeds and mortgages trace property ownership over time. Marriage licenses and certificates are on file. Birth and death records from the state registration period are also available.

Land records are especially useful for genealogy in Warren County. A deed can show when your family bought land, who they bought it from, and where the property sat. Mortgage records reveal financial ties. For researchers tracing early families in Warren County, these land files can bridge gaps between census years. The Clerk's office is the first place to go for land and vital record searches in Warren County.

Note: Call the Warren County Clerk at 908-475-6211 to confirm hours and document requirements before your visit.

Probate and Estate Genealogy Records

The Warren County Surrogate's Office is at the Warren County Courthouse, 323 Front Street, Suite #1, Belvidere, NJ 07823. Kevin O'Neill serves as the Surrogate. Phone is (908) 475-6223. The Surrogate handles all probate and estate matters for the county.

Probate records are among the most valuable sources for genealogy research. A will filed in Warren County lists heirs by name. It describes property. It often reveals family connections that no vital record can show. Estate inventories detail what a person owned. Administration bonds name who managed an estate with no will. The New Jersey State Archives holds microfilm copies of Warren County surrogate records up to around 1900. For newer probate files, contact the Surrogate directly in Belvidere. Under New Jersey vital records law, the state keeps an index of registered vital events that can support your probate research.

Warren County Historical and Genealogical Society

The Warren County Historical and Genealogical Society is a key resource for family history research. The museum is at 313 Mansfield Street in Belvidere. The mailing address is PO Box 313, Belvidere, NJ 07823. Call 908-475-4246 or email warrencountynjhistorical@yahoo.com to plan a visit.

The Society holds local history materials, family files, old photos, and genealogy records not found at the Clerk or Surrogate offices. Maps, newspapers, and church records from Warren County's past are part of the collection. These types of sources add context to the names and dates you find in official records. A death notice in an old newspaper can tell you about a person's life. A church baptism record can confirm a birth date. These details make your genealogy research in Warren County more complete and more accurate.

The Society is a volunteer-run group with a long history of helping researchers trace Warren County families.

Note: The Society is closed during summer months due to no air conditioning, but appointments can be made by calling 908-475-4246.

Warren County Library for Genealogy

The Warren County Library offers resources for family history research. Libraries provide access to databases, old newspapers, and local history collections. Many branches offer free use of Ancestry Library Edition and other genealogy tools on their computers.

Old newspapers on microfilm are one of the strongest sources for genealogy. They hold death notices, wedding announcements, birth listings, and local stories that place families in Warren County at specific times. Library staff can help you find the right resources for your search.

State Archives for Warren County Research

The New Jersey State Archives in Trenton holds vital records covering Warren County. Birth records on microfilm span 1848 to 1923. Marriage records cover 1848 to 1948. Death records run from 1848 to 1963. The search room at 225 West State Street in Trenton is open to the public at no charge. Colonial marriage bonds from 1666 to 1799 are in a searchable online database.

Warren County was formed from Sussex County in 1824. Earlier records for this area may be filed under Sussex County at the Archives. Probate records date from 1670 to 1952. Land records include colonial deeds and proprietary records. The Archives also holds naturalization files and military service records. For genealogy records not found at the county level, the State Archives in Trenton is the next step. Call (609) 292-6260 for help.

Online Genealogy Search Tools

Ancestry.com has New Jersey births, marriages, and deaths going back to 1660. Census records for all federal years through 1950 are on the site. FamilySearch provides free access to New Jersey vital records from 1660 to 1980. State census records for 1855, 1865, 1895, and 1915 are also free there. Both databases hold records that cover Warren County families.

Additional free resources for Warren County genealogy include:

• The Reclaim the Records project with free vital record indices at the Internet Archive
• The NJ GenWeb Project with county genealogy pages and free lookups
• The Genealogical Society of New Jersey with cemetery transcriptions and guides

Online databases let you search for Warren County genealogy records from home. Use them to gather names, dates, and places before visiting the offices in Belvidere for the original documents.

Cities in Warren County

Warren County has 22 municipalities including Phillipsburg, Hackettstown, Washington, Belvidere, and Lopatcong. All genealogy records for these areas are filed through the Warren County offices in Belvidere.

Nearby Counties

These counties border Warren County. Families who lived near a county line may have their genealogy records filed in a neighboring county. Confirm the municipality before starting your search.