Second Arenac County Courthouse

Omer is a city in Arenac County in the U.S. state of Michigan. It is Michigan's smallest city, both by area and population. As of the 2020 census, the city had a population of 259, which ranks it as Michigan's least populated city.While signage along the passing U.S. Route 23 mentions Omer as "Michigan's Smallest City," it was actually the state's second-smallest city in terms of population at the 2010 census after the city of Lake Angelus in Oakland County, which had a population of 290. This was until 2020, when it again regained its smallest city status with 259 residents (to 274 for Lake Angelus).

Arenac Township is a civil township of Arenac County in the U.S. state of Michigan. As of the 2010 census, the township population was 903. The city of Omer is surrounded by the township but is administered autonomously.

Rifle River is a 60.3-mile-long (97.0 km) river in the U.S. state of Michigan. It rises in northeastern Ogemaw County and flows through Arenac County to enter Saginaw Bay of Lake Huron. Once a logging river during the Michigan forestry boom at the turn of the 20th century, the river is now primarily used for recreation, and is a state-designated natural river. It is a popular river for canoeing, with no portages or dams and an average depth of 18 inches, to 5 feet in downtown Omer. It is also known for having one of the best White Sucker (Catostomus commersonii) runs in the state of Michigan, in the spring.

Standish Township is a civil township of Arenac County in the U.S. state of Michigan. The population was 1,900 at the 2010 census. The city of Standish borders the township on the northwest but is administered autonomously.

Standish is a city in the U.S. state of Michigan. The population was 1,458 at the 2020 census. It is the county seat of Arenac County.

Standish is a disused railroad depot located at 107 North Main Street in Standish, Michigan. It was designated a Michigan State Historic Site in 1977 and listed on the National Register of Historic Places in 1991 as the Michigan Central Railroad Standish Depot.

Saganing Eagles Landing Casino is a casino located just outside the city of Standish, Michigan, United States. Opened on December 31, 2007, the casino is owned by the Saginaw Chippewa Tribal Council, which also owns the Soaring Eagle Casino in Mount Pleasant, Michigan. This is located on the tribe's Isabella Indian Reservation. The casino features over 800 slot machines and virtual games on the gaming floor. Traditional table games such as blackjack and roulette are offered through a virtual experience. The casino was renovated and expanded in 2019.

Deep River Township is a civil township of Arenac County in the U.S. state of Michigan. The population was 2,149 at the 2010 census. The village of Sterling is located within the township.

The Episcopal Diocese of Eastern Michigan is the Episcopal diocese in the northern two-thirds of the eastern half of the Lower Peninsula of Michigan, not including the greater Detroit area, which is in the Episcopal Diocese of Michigan. The diocese is headquartered in Saginaw, Michigan. It is a relatively new diocese, having been spun off from the Episcopal Diocese of Michigan in 1994. There are 50 separate parishes operating within the diocese.

Standish Maximum Correctional Facility (SMF) was a Michigan Department of Corrections maximum security prison in Standish, Michigan. The men's prison was on the south side of M-61. It was once considered as a potential site for housing detainees to be relocated from the prison in Guantánamo Bay, Cuba. The facility was in operation for 19 years, and while empty, still stands to this day.

Lincoln Township is a civil township of Arenac County in the U.S. state of Michigan. The population was 942 at the 2010 census. The city of Standish borders the township on the northeast but is administered autonomously.

Prescott is a village in Ogemaw County of the U.S. state of Michigan. The population was 266 at the 2010 census. The village is located within Richland Township.