Mercer County, New Jersey Genealogy
Mercer County, New Jersey ancestry, family history, and genealogy research page. Guide to genealogy, history, and courthouse sources including birth records, marriage records, death records, census records, wills, deeds and land records, Civil War records, Revolutionary War records, family histories, cemeteries, churches, tax records, newspapers, and obituaries.
|Mercer County, New Jersey|
Location in the state of New Jersey
Location of New Jersey in the U.S.
|Address|| Trenton County Courthouse|
PO Box 8068
Trenton, NJ 08650-0068
Phone: (609) 989-6517
Mercer County Website
- 1 County Information
- 2 Description
- 3 Mercer County, New Jersey Historical Facts
- 4 Parent County
- 5 Boundary Changes
- 6 Record Loss
- 7 Mercer County, New Jersey Genealogy Resources
- 7.1 Bible
- 7.2 Cemeteries
- 7.3 Census
- 7.4 Church Records
- 7.5 Court Records
- 7.6 Emigration and Immigration
- 7.7 Ethnic, Political, or Religious Groups
- 7.8 Gazetteers
- 7.9 Genealogy
- 7.10 History
- 7.11 Land and Property
- 7.12 Maps
- 7.13 Migration
- 7.14 Military
- 7.15 Naturalization and Citizenship
- 7.16 Newspapers
- 7.17 Occupations
- 7.18 Periodicals
- 7.19 Poorhouse, Almshouse
- 7.20 Probate Records
- 7.21 Repositories
- 7.22 Schools
- 7.23 Taxation
- 7.24 Vital Records
- 8 Mercer County, New Jersey Websites
- 9 Mercer County, New Jersey Neighboring Counties
- 10 Mercer County, New Jersey Genealogy References
Mercer County is in the west central region of the state. It was created in 1838. Trenton is the county seat. The county was named for Continental Army General Hugh Mercer. 
Mercer County, New Jersey Record Dates
Mercer County, New Jersey Historical Facts
- 1839, more parts from Hunterdon County added.
- 1844, Hopewell twp. returned to Hunterdon County and then returned in 1845.
For animated maps illustrating New Jersey county boundary changes, visit "Rotating Formation New Jersey County Boundary Maps" (1683-1928) may be viewed for free at the MapofUS.org website.
There is no known history of courthouse disasters in this county.
Mercer County, New Jersey Genealogy Resources
|Tombstone Transcriptions Online||Tombstone Transcriptions in Print||List of Cemeteries in the county|
|Findagrave.com||Family History Library||Findagrave.com|
|See New Jersey Cemeteries for more information.|
Church records and the information they provide vary significantly depending on the denomination and the record keeper. They may contain information about members of the congregation, such as age, date of baptism, christening, or birth; marriage information and maiden names; and death date. For general information about denominations, view the New Jersey Church Records wiki page.
Emigration and Immigration
Ethnic, Political, or Religious Groups
Smith, Anna Amelia Bustill.Reminiscences of Colored people of Princeton, N.J., 1800-1900. -[Philadelphia : P. V. Baugh, c 1913] - 15 p. F144.P9 M6
Local histories are available for New Jersey counties. County histories may include biographies, church, school and government history, and military information. For more information about local histories see the wiki page section New Jersey Local Histories.
Land and Property
Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.
See New Jersey Land and Property for information about New Jersey Proprietary land records. After land was transferred to private ownership, subsequent transactions were usually recorded at the county courthouse and where records are currently housed.
Early migration routes to and from Mercer County, New Jersey Genealogy for settlers included:
- Delaware River a pre-historic pathway serving as the border between New Jersey and Pennsylvania rises in Schoharie County, New York and flows by the Lehigh Canal in Pennsylvania, Frenchtown, Trenton where river meets tidewater, and past Bordentown in New Jersey, Philadelphia in Pennsylvania to empty into the North Atlantic Ocean.
- King's Highway 1673 connected Boston, Massachusetts to Charleston, South Carolina and many coastal cities between including Philadelphia, Trenton, and New York City.
- Delaware and Raritan Canal 1834 connected New Brunswick, New Jersey on the Raritan River (and NY City) to Bordontown, New Jersey on the Delaware River and parts of Pennsylvania including Philadelphia. A boat traffic carrying feeder canal from near Frenchtown also supplied water to the Trenton part of the D&R Canal.
Naturalization and Citizenship
Additional newspapers abstracts can sometimes be found using search phrases such as Mercer County, New Jersey Genealogy newspapers in online catalogs like:
Probate records created after 1852 are held by the Mercer County, New Jersey Genealogy Probate Court. From 1797 or the creation of the county, probate records were held by the Court of Common Pleas. Most counties transferred all records to the Probate Court, but in some circumstances, Court of Common Pleas records should be searched for records prior to 1852. Most records are housed at the Mercer County, New Jersey Genealogy Courthouse. Some records are on microfilm at the Ohio Genealogical Society and the Family History Library. For more complete information about the location of county probate records see:
See the wiki page New Jersey Probate Records for information about how to use probate records.
Content: Probate Records may give the decedent's date of death, names of his or her spouse, children, parents, siblings, in-laws, neighbors, associates, relatives, and their place of residence.
Record types: Wills, estates, guardianships, naturalizations, marriage, adoption, and birth and death records (1867-1908 only).
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. (Family History Library book 973 D27rb 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
Phone: (609) 292-4978
Fax: (609) 777-0094
Online Probate Records
- 1656 - 1999 New Jersey Wills and Probate Records 1656-1999 at Ancestry.com — index and images $
- 1670 – 1760 Calendar of New Jersey Wills 1670-1760 at Ancestry.com — index and images $
- 1670 – 1817 New Jersey Abstract of Wills 1670-1817 at Ancestry.com — index and images $
- 1678 - 1980 New Jersey Probate Records 1678-1980 at FamilySearch — images
Mercer County Courthouse
PO Box 8068;
Trenton, NJ 08650-0068
Phone: (609) 989-6517
County Surrogate has probate records. County Clerk has court and land records from 1838, judgments, tax maps, and corporation records.
Family History Centers
Family history centers provide one-on-one assistance and free access to premium genealogical websites. In addition, many centers have free how-to genealogy classes. See family history center for more information. Search the online FHC directory for a nearby family history center.
Mercer County Cultural and Heritage Commission
640 S. Broad St.
Trenton, NJ 08650
Central Jersey Genealogical Club
PO Box 9903
Hamilton, NJ 08650-1903
Hamilton Township Historical Society
2200 Kuser Road
Trenton, NJ 08650
Hightstown-East Windsor Historical Society
164 North Main Street
Hightstown, NJ, 08520
Historical Society of Princeton
158 Nassau St.
Princeton, NJ 08542-7006
Hopewell Valley Historical Society
PO Box 371
Pennington, NJ 08534
New Jersey tax records complement land records and can be used in place of censuses before 1820 or to supplement the years between censuses. Because only persons who owned taxable property were listed, many residents were not included in tax lists. There may also be gaps of several years in the tax records of some counties. For more information see the wiki page New Jersey Taxation.
Vital Records consist of births, adoptions, marriages, divorces, and deaths recorded on registers, certificates, and documents. United States Vital Records has additional research guidance on researching and using vital records. A copy or an extract of most original records can be purchased from the New Jersey Vital Records State Department of Health or the County Clerk's office of the county where the event occurred. Original marriage records are usually held at the county Bureau of Vital Statistics.
- 1901-1903, New Jersey, Reclaim the Records, New Jersey Birth Index, 1901-1903 at FamilySearch — index
Online Marriage Indexes and Records
1606-1981 - New Jersey, United States Marriages at FindMyPast — index $
Mercer County, New Jersey Websites
- USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county.
- Mercer County, New Jersey History, Records, Facts and Genealogy (Familytree101)
- Mercer County NJ Genealogy
- FamilySearch Catalog
Mercer County, New Jersey Neighboring Counties
Mercer County, New Jersey Genealogy References
- Wikipedia contributors, "Mercer County, New Jersey" in Wikipedia : the Free Encyclopedia, https://en.wikipedia.org/wiki/Mercer_County,_New_Jersey accessed 29 August 2018.
- Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), 464. At various libraries (WorldCat); FHL Book 973 D27e 2002.
- Handybook, 847-61.
- Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Mercer County, New Jersey page 464, At various libraries (WorldCat); FHL Book 973 D27e 2002.