Most of the edges of the six by six squares that would become Greenwood were surveyed in October 1861 by a crew working for the U.S. government. In early 1862, the same crew marked all the section corners in the township, walking through the woods and swamps, measuring with chain and compass. When done, the deputy surveyor filed this general description for the western six by six square:
The surface of this Township is level and the soil good - well adapted for agricultural purposes. The Timber is large, among which is scattering White Pine of a Superior quality.
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), the Library of Congress (1), Wikidata (1), the National Register of Historic Places (1), 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.