Its territory includes parishes, monasteries, missions, and chapels located in twelve states in the Midwestern United States – Iowa, Illinois, Indiana, Kansas, Michigan, Minnesota, Missouri, North Dakota, South Dakota Nebraska, Ohio, and Wisconsin.

The diocese stands out as one of the most historic in the OCA with many parishes dating back to the late 1890s,[1] the diocese was also the epicenter of the mass conversion of Eastern Catholic Americans to orthodoxy between the 1890s-1920s in much part thanks to the labors of the former Eastern Catholic priest St. Alexis Toth who brought more than 20,000 to the church by the end of his life.

However, when asked about this figure Archbishop Daniel stated that not only was this number inaccurate but Krindatch had never received any data, either from him or to his knowledge any member of the diocesan council.

The difference in number of official members versus actual weekly attendees being due to the large number of catechumen, and non OCA Orthodox Christians; Well these parishioners may participate in services, tithe and (in the case of non OCA Orthodox Christians), take communion, they are not considered members of the diocese.

[8] The Increase in non-OCA Orthodox attending OCA parishes has a variety of reasons but the biggest is the recent influx of eastern Europeans to the diocese, especially Ukrainians.