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Riverton Township is a civil township of Mason County in the U.S. state of Michigan. The population was 1,153 at the 2010 census.

Summit Township is a civil township of Mason County in the U.S. state of Michigan. The population was 995 at the 2020 census.

The Dumaw Creek Site is an archaeological site designated 20OA5, located along Dumaw Creek northeast of Pentwater, Michigan, that was the location of a 17th-century village and cemetery. It is one of the youngest pre-historic sites in Michigan, dating to the terminal Late Woodland Period just prior to European contact. It was listed on the National Register of Historic Places in 1972.

The Ludington Pumped Storage Plant is a hydroelectric plant and reservoir in Ludington, Michigan. It was built between 1969 and 1973 at a cost of $315 million and is owned jointly by Consumers Energy and DTE Energy and operated by Consumers Energy. At the time of its construction, it was the largest pumped storage hydroelectric facility in the world.

WKLA-FM (96.3 FM, "96.3 KLA") is a radio station located in Ludington, Michigan broadcasting a Top 40 (CHR) format. According to http://www.gowithsynergy.com/ it is branded "Hits 96".

WLDN is an FM radio station owned by Synergy Media and is licensed to Ludington, Michigan. WLDN broadcasts from studios in Ludington, Michigan along with sister stations WKLA, WWMN, WKZC, WMLQ, and WWKR. It runs a news/talk/sports format and can be heard as far north as Copemish, Michigan, as far east as Reed City, Michigan, and as far south as Whitehall, Michigan. Under certain conditions, it can be heard in parts of northeastern Wisconsin and in Traverse City, Michigan. However, WLDN encounters heavy interference to the south from WFGR, which also broadcasts on 98.7 from Grand Rapids, Michigan.

Amber Township is a civil township of Mason County in the U.S. state of Michigan. As of the 2010 census, the township population was 2,535.

Pere Marquette Charter Township is a charter township of Mason County in the U.S. state of Michigan. The population was 2,416 at the 2020 census.The township was named for French explorer Père Jacques Marquette. The township surrounds the city of Ludington on Lake Michigan, but the city and the township are administered autonomously.

Mason County Historical Society, located in Ludington, Michigan, is a private, non-profit, educational organization. It has an outdoor museum dedicated to preserving the local history of Mason County, Michigan. Nineteenth-century history is shown with White Pine Village, and the Mariners Old Time Baseball Team, also known as the Ludington Mariners, a professional Class D minor league baseball team of the early 1900s. There is also a Michigan Research Library containing a genealogy department.

WKLA is an AM radio station owned by Todd Mohr, through licensee Synergy Media, Inc. It broadcasts from Ludington, Michigan. It airs Westwood One's Good Time Oldies format and can be heard in a very small area around Ludington and Scottville. In late 2013 and early 2014, WKLA added two FM translators to extend its reach, 92.7 W224CA in Ludington (formerly a rebroadcaster of sister station WWKR) and 107.9 W300CG in Manistee (which has since moved to a different frequency and is simulcasting WKLA's sister station WMLQ). 92.7 covers a larger coverage area than 1450 AM. WKLA is also the home of Manistee Chippewas football and basketball despite the 1450 signal not reaching Manistee itself. As of September 2016, the station is airing the news/talk programming of sister station WLDN 98.7 FM on an assumed temporary basis pending retuning and installation of a new antenna for WLDN, as the latter's previous antenna was used to put WKLA-FM on the air on 96.3. In February 2017, WLDN returned to the air on 98.7 FM, allowing WKLA and W224CA to resume the oldies format.

Mason County Airport (IATA: LDM, ICAO: KLDM, FAA LID: LDM) is a county-owned public-use airport located two miles (3 km) northeast of the central business district of Ludington, a city in Mason County, Michigan, United States.

Pleiness Lake, also known as Lost Lake, is a natural lake located in Eden Township, Mason County, Michigan in the northwestern part of Michigan's Lower Peninsula.