New Castle County, Delaware Genealogy

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United States
New Castle County

Guide to New Castle County, Delaware ancestry, family history, and genealogy birth records, marriage records, death records, census records, family history, and military records.

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New Castle County, Delaware
Map of Delaware highlighting New Castle County
Location in the state of Delaware
Map of the U.S. highlighting Delaware
Location of Delaware in the U.S.
Founded August 8, 1673
County Seat Wilmington

County Information


  • The county was named for the English city of Newcastle. The county seat is Wilmington and the county was created August 8, 1637.
  • The County is located in the north area of the state.[1]
  • Previously known as New Amistel County, by 31 December 1674 the name had been changed to New Castle.

County Courthouse

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New Castle County Courthouse
800 North French Street
Wilmington, DE 19801
Phone: 302-571-7545

  • Clerk of Peace has marriage records from 1911.
  • The Prothonotary has divorce and court records.
  • Register of Wills has probate records
  • Recorder of Deeds has land records. [2]
  • The New Castle County Government Center
    87 Reads Way
    New Castle, DE 19720-1648

New Castle County, Delaware

Known Beginning Dates for Major Records[3]
Birth* Marriage Death* Court Land Probate Census
abt 1861 1744 1919 1676 1671 1680 1782
*Statewide registration was 1861-1863, then reinacted in 1881. General compliance by 1921.

Record Loss

There is no known history of courthouse disasters in this county.

Boundary Changes

  • Parent County: New Castle County was created 8 August 1673 from New Amistel (old) County.
  • County seat: Wilmington [4]

Populated Places

For a complete list of populated places, including small neighborhoods and suburbs, visit Hometown Locator. The following are the most historically and genealogically relevant populated places in this county:[5]

Unincorporated communities
Census-designated places

New Castle County

History Timeline

1638 Swedes and Finns settle at Fort Christiana (now Wilmington).[6][7] They eventually spread as far north as Philadelphia. See New Sweden wiki article for more details.
1651 Dutch build Fort Casimir and Sandhook (now New Castle City).[8][9][10] See New Netherland article for details.
1654 New Sweden captures Fort Casimir without a fight. It is renamed Fort Trinity (Trefaldighets).
1655 New Netherland returns a large army and forces all of New Sweden to submit to Dutch rule.
1664 As part of the Second Anglo-Dutch War New Netherland is surrendered to England.
1673 A new war breaks out. The Dutch send a huge armada to recapture New Netherland, but at the end of 1674 it is finally ceded to England.[11] Nieuw Amstel is renamed New Castle after the English take control.


Bible Records


Business, Commerce, and Occupations


Cemeteries of New Castle, Delaware online and in print
Tombstone Transcriptions Online
TombstoneTranscriptions in Print (Often more complete)
List of Cemeteries in the County
See Delaware Cemeteries for more information

The following web sites may have additional information on New Castle County cemeteries.

Census Records

Territory and State Census Records

Federal Census Records

For tips on accessing New Castle County, Delaware Genealogy census records online, see: Delaware Census.

Church Records

Contains church records of:

  • Wilmington: Central Presbyterian Church; First Presbyterian Church; Holy Trinity Church; St. Andrew's Episcopal Church
  • Swedes Church
  • Christina Parish was located in what is now Wilmington. A 1754 membership list is preserved in Archivum Americanum at the Consistory Court of the Archbishop of Upsal in Sweden. A copy is held at the Historical Society of Pennsylvania.[12]

Court Records


Emigration and Immigration

Large numbers of Scotch-Irish immigrants who settled in Chester County, Pennsylvania, probably arrived at the port of New Castle in the early 1700s.[13]

Ethnic, Political, and Religious Groups

Funeral Homes



Land and Property Records

Local Histories

Online County Histories

Maps and Gazetteers

KentKent County, MarylandCecil County, MarylandChester County, PennsylvaniaDelaware County, PennsylvaniaGloucester County, New JerseySalem County, New JerseyDE NEW CASTLE.PNG
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Military Records

American Revolution

  • A Census of Pensioners for Revolutionary or Military Services: With their Names, Ages, and Places of Residence, as Returned by the Marshalls of the Several Judicial Districts, Under the Act for Taking the Sixth Census]. 1841. Digital version at Google Books. 1967 reprint: FHL Collection 973 X2pc 1840. [See Delaware, New Castle County on page 126.]

Civil War

Civil War service men from New Castle County served in various regiments. Men often joined a company (within a regiment) that originated in their county. Listed below are companies that were specifically formed in New Castle County.

- Nield's Independent Battery, Delaware Light Artillery

World War I

World War II

Naturalization and Citizenship

Delaware Public Archives has placed the New Castle County Naturalizations Original petitions and other legal documents of immigrants wishing to become American citizens on-line. There is an alphabetical listing of the names and dates.The date listed  reflects the year of the file and may vary from the document displayed. The file for each individual may contain more documentation.



Other Records


Probate Records

  • A Calendar of Delaware Wills, New Castle County, 1682-1800. New York, NY: National Society of the Colonial Dames of America, 1911; Baltimore, Maryland: Genealogical Publishing Company, 1969. (Family History Library book 975.11 S2n.)

School Records

Tax Records

The 1676 list of taxables has been published:

  • Dickson, Taylor L. and P.S.P. Conner. "Some Data Concerning the Taking of Wolves in New Castle County in 1676, and a Reprint of the Taxables of that Year," Publications of the Genealogical Society of Pennsylvania, Vol. 1, No. 1 (Jan. 1895):29-34. For free online access, see WeRelate.

Vital Records


Download an application for Delaware Birth Certificate to mail




Research Facilities


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.

Societies, Libraries, and Museums

  • Delaware Genealogical Society
    Center for African American Heritage
    505 N. Market Street
    Wilmington, Delaware 19801-3091
    302 655-7161
  • Jewish Historical Society of Delaware
    505 North Market Street
    Wilmington, DE 19801-3091
  • New Castle Historical Society
    30 Market Street
    New Castle, DE 19720
    Fax: 302-322-8923
  • Winterthur Heritage Association
    Winterthur Museum, Garden & Library
    5105 Kennett Pike
    Wilmington, DE 19735

See also a List of Delaware Archives, Libraries, Publications, Historical & Genealogical Societies


Research Guides


  1. Wikipedia contributors, "New Castle County," in Wikipedia: the Free Encyclopedia,,_Delaware 04/27/2017.
  2. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), New Castle, Delaware Page 121 At various libraries (WorldCat); FHL Book 973 D27e 2002.
  3. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), New Castle County, Delaware. Page 121 At various libraries (WorldCat); FHL Book 973 D27e 2002; Alice Eichholz, ed. Ancestry’s Red Book: American State, County, and Town Sources, Third ed. (Provo, Utah: Ancestry, 2004), 118.
  4. The Handybook for Genealogists: United States of America,10th ed. (Draper, UT:Everton Publishers, 2002).
  5. Wikipedia contributors, "New Castle County," in Wikipedia: the Free Encyclopedia,,_Delaware, accessed 24 October 2018.
  6. Amandus Johnson, "Detailed Map of New Sweden 1638-1655" in Amandus Johnson's book The Swedes on the Delaware 1638-1664 (Philadelphia: Swedish Colonial Society, 1915), 392.
  7. John A. Munroe, Colonial Delaware: A History] (Millwood, N.Y.:KTO Press, 1978) [FHL book 975.1 H2mu], 16-18. “From there they proceeded according to instructions up the Delaware and into the Christina River, the Minquas Kill to the Dutch. Here, after reconnoitering the stream, Minuit met with Indians and purchased lands from Duck Creek (the southern boundary of New Castle County) to the Schuylkill. Here too a site was picked for a settlement that was called Fort Christina. It was at the Rocks, ‘a wharf of stone’ on the Christina about two miles from the Delaware River and above the junction of the Christina and its main tributary, the Brandywine, on the east side of the present city of Wilmington.”
  8. Johnson, Detailed Map.
  9. "Fort Casimir" in Wikipedia: the Free Encyclopedia at (accessed 7 November 2008).
  10. Philip S. Klein, and Ari Hoogenboom, "A History of Pennsylvania, 2nd ed." (University Park, Penn.: Penn State Press, 1980; digitized by Google at, 11.
  11. "New Netherland" in Wikipedia: the Free Encyclopedia at (accessed 13 December 2008).
  12. Charles J. Stillé, "Archivum Americanum in the Consistory Court of the Archbishop of Upsal," The Pennsylvania Magazine of History and Biography, Vol. 15 (1891):482, 484-485. For free online access, see WeRelate.
  13. Wayland F. Dunaway, The Scotch-Irish of Colonial Pennsylvania (Chapel Hill, N.C.: The University of North Carolina Press, 1944), 51. Free digital version at PA's Past: Digital Bookshelf at Penn State.