Search For Your Ancestors

New Castle County, Delaware Genealogy

New Castle County was established on August 8, 1673 as an Original County (originally named New Amstel County until 1674). The county was named by Dutch Governor Anthony Colve for the town of New Castle, Delaware as an Anglicization of Nieuw Amstel.

The New Castle County Seat is situated in Wilmington and the county government website is

Areas neighboring New Castle County are Chester County, Pennsylvania, Delaware County, Pennsylvania, Gloucester County, New Jersey, Salem County, New Jersey, Kent CountyKent County, Maryland, Cecil County, Maryland.

New Castle County vital records can be found at the Delaware Office of Vital Records which has copies of birth, marriage, divorce and death records. There is a fee for each copy requested. Please refer to the information to the Statewide Vital Records in Delaware for current fees and application process.

You can search online for New Castle County Birth, Marriage, Divorce or Death Records. You can also Order Electronically Online or can download an application for Delaware Birth CertificateMarriage CertificateDeath Certificate Application to mail. Same day service is available to walk-in customers. This is the fastest way to obtain a birth certificate. Walk-in address is University Plaza-Chopin Building – (302) 995-8588 – Office Hours 8:00 AM – 4:15 PM Monday through Friday except Holidays

New Castle County does have Federal Census Schedules to help in researching your family tree. Federal government Population Schedules can be found for 1790-189019001910192019301940.

New Castle Co. Mortality Schedules is available for 1850, 1860, 1870 and 1880. New Castle Co. Industry and Agriculture Schedules can be acquired for 1850, 1860, 1870 and 1880. New Castle Co. Union Veterans Schedules can be acquired for 1890. There’s free down loadable and printable census forms to aid with your research.

New Castle County Society and Family History Resources

A list of New Castle County Historical  and Genealogical Societies, Forums, Message Boards, Libraries, Archives. See Also Delaware Archives, Genealogical and Historical Societies for statewide Addresses and links.

New Castle County Courthouse and Government Records

Genealogist typically overlook the value of New Castle County court, probate, and land files as a source of genealogy and family history details. Buried away in Delaware courthouses and archives everywhere are the desires and worries of countless Delaware people.

The possibilities are excellent that your particular ancestors and forefathers have left a comprehensive document of at least some facets of their lives in the New Castle County court records. Even if your forefathers is not brought up in a Court case, take into account all of the other procedures which could have lead to him or her showing up in court records.

  • New Castle County Courthouse (all departments listed below are located here, unless otherwise noted)
    • Address: 500 North King Street, Wilmington, DE 19801
    • Phone: 302-255-0900
  • New Castle County Clerk of the Peace functions include Witnessing County documents; attends all formal Levy Court Meetings; records all acts as custodian for the Minutes of the Levy Court Meetings; advertises and posts County ordinances; countersigns warrants drawn on County funds. Issues marriage licenses and performs marriages (civil ceremonies) in the County.
    • Marriage Records: 1829-1898
  • New Castle County Register of Wills purpose is to record wills and documents pertaining to estate matters in New Castle County, Delaware. The office is responsible for overseeing the appointments of personal representatives and for administering estate proceedings. This office is also held accountable for making sure that the estates are in compliance with the Delaware Law. All estate matters are maintained as permanent records.
    • Probate Records: 1742
  • New Castle County Register of Deeds is responsible for indexing and maintaining copies of legal documents pertaining to land, mortgages, appointments, etc. Only the most recent deeds are in the office, however. Most have been transferred to the archives.
    • Land Records: 1676

New Castle County Genealogy Links

The following are links to Family history and genealogy, Records and Resources relating to New Castle County. A majority of these genealogy links fall into 3 categories: Business Sites, Private Sites or Organization Sites. Some have free access some have to have a cost. This is merely a list which has been collected or submitted. I do not recommend or promote one genealogy site above another. Feel free to submit your own preferred New Castle County genealogy or family history related sites.

New Castle Co. DE Books, Newspapers & Publications

New Castle Co. DE Birth, Marriage & Death Records

New Castle Co. DE Court, Probate Land and Tax Records

New Castle Co. DE Census Records

New Castle Co. DE Cemeteries & Church Records

New Castle Co. DE Church & Bible Records

New Castle Co. DE Family Websites, Pictures & Histories

New Castle Co. DE General and History Websites

New Castle Co. DE Immigration & Naturalization

New Castle Co. DE Maps, Atlases & Gazetteers

New Castle Co. DE Military Records

New Castle Co. DE Schools & Directories