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Marty is a census-designated place (CDP) in southern Charles Mix County, South Dakota, United States. The population was 677 at the 2020 census. The community has the name of Bishop Martin Marty, the Bishop of Sioux Falls, SD. The community is referred to as Ṡinasapa in Dakota language of the native Yankton Sioux Tribe. YST Transit buses connect the community to Wagner, Lake Andes and Ravinia.
Its first post office opened in 1922. Between the 2010 and 2020 censuses its population grew from 402 to 677 (+68%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (1) and U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.