Most of Walnut Grove was built recently: 5% of its homes predate 1940 and the median home dates from 1987. Below: maps from 1958 on and the census since 1880.
Walnut Grove was part of Blount County before it was included in Baine County (now Etowah) in 1866. Walnut Grove was settled by the Battles family in 1813, the Morton family, and the Carnes family (namesake of the Carnes Chapel area near the ghost town of Bennettsville off of US 278) in 1823. Around 1825, the town was known as "Thomas Crossroads", after landowner Jordan D. Thomas. In 1848, the town was named "Cornelius", after postmaster Harvey Cornelius. In 1849, it was renamed "Walnut Grove".
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 (5), Wikipedia, 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.