The Plum Grove Township post office opened in 1870, the earliest record of the town by name. Two smaller post offices, Plum Grove (1870) and Claude (1884), opened inside today’s town and later closed.
2020 census: 591156 years
Founding year: the first Plum Grove Township post office (Blevins & Helbock, CC0).The full story ↓
What stands out about Plum Grove Township’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
A post office named Plum Grove was established on July 1, 1870 in northwestern Butler County. The postmaster (and landowner) was John R. Wentworth and the post office was named for the established plum bushes near his homestead. This post office was located next to the East Branch of the Whitewater River near the modern day intersection of NW 110th Street and NW Buffalo Road. Over the next two years, some businesses were started at Plum Grove.
Every edition of the U.S. Geological Survey’s map of Plum Grove Township. Tap a year, or press play to watch the town change.
1961El Dorado NW sheet · 1:24,000
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Plum Grove Township.
Famous people
Famous people close to Plum Grove Township
Nobody well known was born in Plum Grove Township itself, so here are the best known from just nearby.
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 Wikipedia, 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.