The South Park post office opened in 1899, the earliest record of the town by name. Another post office, Southpark (1899), opened inside today’s town and later closed.
2020 census: 1,908127 years
How historic is South Park?
C
More historic than 27% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first South Park post office (Blevins & Helbock, CC0).
History grade
What drives South Park’s History grade
On its age, its old homes and the National Register, South Park is more historic than 27% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C
HistoryA character grade: shown, never part of South Park’s overall grade.
Wyoming towns list more on the Register than most of the country (a typical Wyoming town has 25.1 per 10,000 residents, the U.S. 2.4), so South Park’s 0.0 sits below most of its state (16% of Wyoming towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from D to C+. The pre-1940 share is a Census survey estimate (±12.3 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about South Park’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of South Park yet. The photos, dates and memories neighbors add here are how it gets written.
South Park is a census-designated place (CDP) in Teton County, Wyoming, United States. The population was 1,731 at the 2010 census. It is part of the Jackson, WY–ID Micropolitan Statistical Area. The community does not have any connections with South Park, the animated Comedy Central television series.
Its first post office opened in 1899. Between the 2010 and 2020 censuses its population grew from 1,731 to 1,908 (+10%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Timeline
South Park, 1899 to 1963
Woven from the archive, old maps, post office records, the National Register and the people born here.
The South Park post office opened in 1899, the earliest record of the town by name (U.S. post office records).
How does South Park rank for history?
South Park is more historic than 27% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in South Park?
11% of South Park’s homes were built before 1940 (Census estimate, ±12.3 points), against a typical 12% for a Wyoming town; the median home was built in 1998.
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).
From U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
