Oscoda County is named for the Native American word “ossin” meaning “pebble” and from “mushcoda” meaning “large prairie” and has the meaning “pebbly prairie”.
Surrounding County Courthouses:
E – Alcona County
S – Ogemaw County
W – Crawford County
Created: April 1, 1840 
County Seat:
Union Corners 1881 – 1882
Mio 1882 – present
Former County Courthouse – Mio
Location: 301 Morenci Avenue / East 11th Street
Built: 1888 – 1889
Style: Classical Revival
Architect: Pratt and Keoppe of Bay City
Contractor: George Hunter
Description: The building faced west and was a two story white colored wood structure. The building was located on spacious grounds in the center of Mio. The building had a white colored wood porch on the front. Above the entrance was a square wood tower. In the interior, the courtroom was on the second story had ornamental sheeting.Two wings were added in 1908. The building was destroyed by fire on May 6, 2016.
County Courthouse – Mio
Location: 105 South Court Street / East 9th Street
Built: 1919 – 1920
Style: Schoolhouse
Architect: Unknown
Contractor: Unknown
Description: The building faces west and is a one story red colored brick and concrete structure. The building is located on spacious landscaped grounds in the center of Mio. The building has a projecting entrance on the west side. The building was a schoolhouse until 1962. The roof line is flat. The building was renovated in 1995. In 1962 the building became the courthouse annex. In the interior, the courtroom is located in the basement. The building houses the County Circuit Court of the 23rd Judicial District, County District Court and County Probate Court.
County Government Center – Mio
Location: 301 Morenci Avenue / East 11th Street
Built: 2019 – 2020
Style: Modern
Architect: Sidock Group Inc. of Novi
Contractor: Wolgast Corporation of Saginaw
Description: The building faces west and
Built in 2019, the modern building is a one story white colored siding and concrete structure. The building faces west and was completed in 2020. The building is located on spacious landscaped grounds in the center of Mio to the west of the courthouse and on the site of the former courthouse. The building has a one story porch at the north end of the west front. The roof is hipped with a square shaped cupola. In the interior is an entrance lobby.
See: The 23rd Judicial District includes Alcona County, Arenac County and Iosco County.
See: Michigan’s County Courthouses by John Fedynsky
History: The county was created in 1881 and Union Corners (Indian Lake) was selected as the county seat. The county seat was moved to Mio in 1882.The first courthouse was built by John Randall in 1882 and rented the building to the county. The second and present courthouse was constructed in 1888 to 1889 at a cost of $3,795. The cost of the addition in 1908 was $1,692. In 1962, the county moved into the school built in 1919 to 1920 and the building became the County Courthouse Annex. In 1916, the second courthouse was destroyed by fire. The County Government Center was constructed in 2019 to 2020.
Former County Courthouse – Mio
County Courthouse – Mio
Photos taken 2008