Alexandria’s post office opened in 1872, and 68% of its homes were built before 1940
Its Register listing is the Richard E. Dill House. Its Register listing is the Richard E. Dill House. Below: maps from 1960 on and the census since 1880.
In the 1840s and 1850s, the Oregon Trail passed through present-day Thayer County, following the Little Blue River through southeastern Nebraska before crossing into the valley of the Platte River. Settlers arrived along the trail in the late 1850s. The first permanent white residents of the county arrived in 1858, settling about two and a half miles (about four kilometers) south of present-day Alexandria, on the divide between the Little Blue and Big Sandy Creek. In 1859, Isaac Alexander arrived from Kansas with a portable gristmill; he settled on Big Sandy Creek, where he built a log cabin and stockade.
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 (3), the National Register of Historic Places (1), 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.