Its Register listings are the Farmers State Bank of Platte and the Pratt & Cjolme Building. Below: 1 old photo or paper, maps from 1979 on, and the census since 1910.
Founding year: the first Platte post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Platte’s History grade
On its age, its old homes and the National Register, Platte is more historic than 66% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
B+
HistoryA character grade: shown, never part of Platte’s overall grade.
South Dakota towns list more on the Register than most of the country (a typical South Dakota town has 37.3 per 10,000 residents, the U.S. 2.4), so Platte’s 17.2 sits near the middle of its state (56% of South Dakota towns have fewer) while its 2 listings outnumber those of 60% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C+ to A−. The pre-1940 share is a Census survey estimate (±10.5 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 Platte’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Lewis and Clark were told to watch for ‘burning bluffs’ in the area. Settlement began in the early 1880s. A fur trader named Bernard Pratte once lived at the mouth of what was then known as the ‘Fish Creek’. Pratte's last name was mistakenly transcribed as Platte on an early map of the creek and the spelling error stuck. The town that would become Platte was named after the creek.
The Platte post office opened in 1885, the earliest record of the town by name (U.S. post office records).
How does Platte rank for history?
Platte is more historic than 66% 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.
What is on the National Register in Platte?
Two places: the Farmers State Bank of Platte (listed 1983) and the Pratt & Cjolme Building (2007).
How old are the homes in Platte?
29% of Platte’s homes were built before 1940 (Census estimate, ±10.5 points), against a typical 10% for a South Dakota town; the median home was built in 1968.
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 Wikimedia Commons (5), Wikidata (2), the National Register of Historic Places (2), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), 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.
2016
2016
2015
2004
