Diocese of Wilmington

Diocese of Wilmington

Dioecesis Wilmingtoniensis
Cathedral of St. Peter
Coat of arms
Location
Country United States
Territory Delaware
The nine counties on the Eastern Shore of Maryland: Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester
Ecclesiastical provinceBaltimore
Statistics
Area5,375 km2 (2,075 sq mi)
Population
  • Total
  • Catholics
  • (as of 2025)
  • 1,481,000
  • 246,476 (16.6%)
Parishes56
Information
DenominationCatholic
Sui iuris churchLatin Church
RiteRoman Rite
EstablishedMarch 3, 1868 (158 years ago)
CathedralCathedral of Saint Peter
Patron saintSt. Francis de Sales
Current leadership
PopeLeo XIV
BishopWilliam Edward Koenig
Metropolitan ArchbishopWilliam E. Lori
Bishops emeritusWilliam Francis Malooly
Map
Website
cdow.org

The Diocese of Wilmington (Latin: Dioecesis Wilmingtoniensis) is a Latin Church ecclesiastical diocese of the Catholic Church in the eastern United States, comprising the entire state of Delaware and the Eastern Shore Region of Maryland. William Koenig is the bishop.