Episcopal Diocese of Ełk:

Deaneries that became part of the newly created Diocese Ełcka: Biała Piska, Ełk, Filipów, Giżycko, Gołdap, Mikołajki Mazurskie, Olecko, Pisz, Węgorzewo (from the Diocese of Warmia); Augustów-East, Gmina Suwałki contains the villages and settlements of Augustów-Zachód, Leipzig, Sejny, Suwałki-Południe, Suwałki-Północ and Rajgród. diocese of Łomża).

Patrons: Most Holy Virgin Mary Mother of the Church, St. Adalbert the Bishop and Martyr, St. Bruno Boniface the Bishop and Martyr

Cathedral: Church of St. Adalbert in Ełk

Co-cathedrals: church of the Blessed Virgin Mary Mother of the Church in Gołdap and the church of St. Alexander in Suwałki

Canonical Chapters: Ełk Cathedral Chapter, Sambian Concathedral Chapter, Collegiate Chapter Sejnysko-Wigierska

In the ecclesiastical structure borders with the Archdiocese of Warmia, the Archdiocese of Bialystok and the Diocese of Bialystok Łomża. The largest cities in the Diocese of Ełk are: Suwałki, Ełk, Augustów and Giżycko.

With The territories of the Diocese of Ełk are also descended by the Blessed:

Blessed. Marianna Biernacka – Born and baptized in 1888 in Leipzig. Arrested on July 1, 1943. She was martyred on 13 July 1943. of the year in Naumowicze near Grodno. Beatified on June 13, 1999 by the Father Saint John Paul II.

Blessed. Sr. Kanizja Eugenia Mackiewicz CSFN – From the Congregation of the Sisters Nazareth. Born on September 27, 1904 in Suwałki. Baptized in the parish St. Alexander in Suwałki, she joined the Order on July 24, 1933. Died martyred on 1 August 1943 in Navahrudak. Beatified on March 5 2000 by the Holy Father John Paul II.

Blessed. Sr. Sergia Julia Rapiej CSFN – From the Congregation of the Sisters of Nazareth. Born on August 18, 1900 in the village of Rogożyn (parish of Leipzig). To the Order she entered on December 25, 1922. She was martyred on August 1, 1943. in Novogrudok. Beatified on March 5, 2000 by the Holy Father John Paul II.