Roman Catholic Diocese of Kansas City–Saint Joseph

Diocese of Kansas City–Saint Joseph

Dioecesis Kansanopolitanae–Sancti Josephi
Coat of arms
Location
Country United States
Territory27 counties across Northern and Western Missouri
Ecclesiastical provinceSt. Louis
Statistics
Area15,429 km2 (5,957 sq mi)
Population
  • Total
  • Catholics
  • (as of 2012)
  • 1,513,005
  • 137,900 (9.1%)
Parishes87
Information
DenominationCatholic
Sui iuris churchLatin Church
RiteRoman Rite
EstablishedSeptember 10, 1880
CathedralCathedral of the Immaculate Conception (Kansas City)
Co-cathedralCathedral of St. Joseph (St. Joseph)
Patron saintOur Lady of the Immaculate Conception, Saint Joseph (Primary)
John Francis Regis (Secondary)
Current leadership
PopeLeo XIV
BishopJames Vann Johnston, Jr.
Metropolitan ArchbishopMitchell T. Rozanski
Bishops emeritusRobert Finn
Map
Website
kcsjcatholic.org

The Diocese of Kansas City–Saint Joseph (Latin: Dioecesis Kansanopolitanae–Sancti Josephi) is a Latin Church ecclesiastical territory, or diocese, of the Catholic Church in northwestern Missouri in the United States. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Saint Louis.

The mother church of the diocese is the Cathedral of the Immaculate Conception in Kansas City. Its co-cathedral is the Cathedral of St. Joseph in St. Joseph. As of 2025, the bishop is James Vann Johnston, Jr.