The diocesan center; Vatră Românească (The Hearth of the Romanian People) is located in Grass Lake, Michigan.

Its territory includes parishes, monasteries, and missions located in 26 states of the United States, as well as six provinces in Canada – Alberta, Arizona, British Columbia, California, Colorado, Connecticut, Florida, Georgia, Illinois, Indiana, Louisiana, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Mexico, Nevada, New York, Ohio, Ontario, Oregon, Pennsylvania, Quebec, Rhode Island, Saskatchewan, Tennessee, Texas, Virginia, and Washington.

Bishop Nathaniel was enthroned as the ruling hierarch of the diocese on November 17, 1984, following the retirement of Archbishop Valerian (Trifa).

On February 1, 2020 Archimandrite Andrei (Secular Name: Dan) Hoarște was consecrated Auxiliary/ Vicar Bishop of the Romanian Orthodox Episcopate of America; at the Diocesan Cathedral of Saint George in (Southfield) Detroit, Michigan.

The deans coordinate activities in their area's parishes, and report to the Diocesan Bishop(s).