Spring Valley was laid out in 1855, and named for a spring near the town site. A post office has been in operation at Spring Valley since 1855. Spring Valley was incorporated in 1872.
Every edition of the U.S. Geological Survey’s map of Spring Valley Township. Tap a year, or press play to watch the town change.
1965Spring Valley 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 Spring Valley Township.
People over time
Spring Valley Township, census by census
Between 1,256 and 2,628 people in every census since 1880.
15 censuses, 1880–2020.
U.S. Census Bureau decennial counts, from the census table on Spring Valley Township’s Wikipedia page.
Stories next door
History across the town line
Each neighbor’s History grade, on the same three inputs.
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), Wikidata (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.