Sussex County, Delaware Genealogy

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United States
Sussex County

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

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Sussex County, Delaware
Map of Delaware highlighting Sussex 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 Georgetown
Sussex County, Delaware Courthouse.jpg
Address Administrative Office Building, 1st Floor, 2 The Circle
PO Box 589
Georgetown, DE 19947
Phone: (302) 855-7785 Sussex County Courthouse

County Information


The County is located in the south area of the state.[1]

County Courthouse

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Wikipedia has more about this subject: Sussex County, Delaware
  • Formerly known as Deale County, the name was changed to Sussex on 4 Dec 1682.
  • The Recorder of deeds has land records from 1693.
  • Register of Wills houses the probate records[2]

Sussex County, Delaware

Known Beginning Dates for Major Records[3]
Birth* Marriage Death* Court Land Probate Census
1861 1847 1861 1680 1693 1683 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: Sussex County was created 8 August 1673 from Deale (old) County.
  • County Seat:Georgetown [4]
  • Because of the ongoing boundary disputes between Lord Baltimore of Maryland and William Penn of Pennsylvania, much of Sussex County (excepting a few miles inland from the coast) was also recognized as part of Maryland's Somerset County up through 1760.  Both Pennsylvania (and, after 1710, Delaware) and Maryland issued land patents for the area, sometimes in conflict with each other.

The British Crown ordered the dispute to be settled in 1760, and commissioned Charles Mason and Jermiah Dixon to survey the boundary.  In 1769, the survey was completed, defining the border between Maryland, Delaware and Pennsylvania that exists today.

The border between Sussex and Kent Counties, Delaware was set in 1683 and has not changed since then.

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

History Timeline


Bible Records

Wiltbank Family Bible, published in Pennsylvania Magazine of History and Biography, Vol. 29, p.339, available online at Family Search.


Business, Commerce, and Occupations


Cemeteries of Sussex, 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 Sussex County cemeteries.

Census Records

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

Territory and State Census Records

Federal Census Records

Church Records

Court Records


Emigration and Immigration

Ethnic, Political, and Religious Groups

Funeral Homes



Land and Property Records

Local Histories

Online County Histories

Maps and Gazetteers

KentCaroline County, MarylandDorchester County, MarylandWicomico County, MarylandWorcester County, MarylandDE SUSSEX.PNG
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for more resources


Military Records

American Revolution

Civil War

World War I

World War II

Naturalization and Citizenship

1804-1839, 1907-1959 Delaware, County Naturalization Records at Family Search - free



Other Records


Probate Records

  • 1680 -1800 Sussex County, Delaware Probate Records, online at Ancestry ($)
  • DeValinger, Leon. A Calendar of Sussex County, Delaware Probate Records, 1680-1800 . Dover, Delaware: Public Archives Commission, 1964.
  • Moore, Marguerite R. indexes for Sussex 1800-1869, three volumes(Westminster, Md.: Family Line Publications, 1995-97.)

School Records

Tax Records

Vital Records





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

Georgetown Historical Society
510 S. Bedford Street
Georgetown, DE 19947
302 855-9660
302 855-1030 (Fax)

Laurel Public Library
101 E 4th St
Laurel, DE 19956
302 875-3184

Lower Delmarva Genealogical Society
(Kent and Sussex County)
Box 3602
Salisbury, Maryland 21802-3602

Sussex County Genealogical Society
c/o Rehoboth Beach Public Library
226 Rehoboth Avenue
Rehoboth Beach, DE 19971


Research Guides


  1. Wikipedia contributors, "Sussex 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), Sussex, 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), Sussex 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, "Sussex County," in Wikipedia: the Free Encyclopedia,,_Delaware, accessed 25 October 2018.