The Prophetstown post office opened in 1835, the earliest record of the town by name. Another post office, Prophets Town (1835), opened inside today’s city and later closed.
2020 census: 1,946191 years
How historic is Prophetstown?
B+
More historic than 73% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Prophetstown post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Prophetstown’s History grade
On its age, its old homes and the National Register, Prophetstown is more historic than 73% of U.S. towns. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
B+
HistoryA character grade: shown, never part of Prophetstown’s overall grade.
Few Illinois towns list much on the Register (a typical Illinois town has 0.5 per 10,000 residents, the U.S. 2.4), so Prophetstown’s 0.0 sits below most of its state (28% of Illinois towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B− to A. The pre-1940 share is a Census survey estimate (±8.2 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (other dates in Quick answers). Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about Prophetstown’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
An 1825 treaty established an unnamed "Winnebago village" about 40 miles above the mouth of the Rock River as a boundary point of the Winnebago, corresponding to the location of Prophetstown.
Passages that mention Prophetstown, cut from the printed page as they were published.
1877 history of whiteside county illinois1877 · page 387Read the page →
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rapids above Rock Falls, and continued at that work for six months, aud then returned to New York State, having previously, however, made a elaim in what is now the township of Hume. In the fall of 1840 he came back to Whiteside, and lived for three years in Hume, and then moved to Prophetstown where he has sinee resided. Since his last return to Whiteside he has been constantly engaged in farming, and in 1853 and 1854 was also engaged in mercantile business in the village of Prophetstown. For quite a number of years past he has manufactured cheese to a considerable extent, and has a splendid dairy farm near
Text read by machine from the scan; it may contain errors.
History of Whiteside county, Illinois, from its first settlement to the present time1877 · page 370Read the page →
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and doing all the work. It required, however, a cash subscription of $40,000 to purchase the old franchise, and for incidental expenses, which was obtained, and the building of the road immediately commenced, and on the 8th day of March, 1871, the first train of cars entered the village of Prophetstown. The next year it was continued to the Mississippi river near Fulton, where it was expected it would cross on the bridge used by the Chicago & Northwestern Railway, but the latter obtained a permanent injunction forbidding them, and the end of that branch of the line remains on the east side of the river. Thus after nearly twenty years
Text read by machine from the scan; it may contain errors.
1877 history of whiteside county illinois1877 · page 370Read the page →
Read the text
and doing all the work. It required, however, a cash subscription of $40,000 to purchase the old franchise, and for incidental expenses, which was obtained, and the building of the road immediately commenced, and on the 8th day of March, 1871, the first train of cars entered the village of Prophetstown. The next year it was continued to the Mississippi river near Fulton, where it was expected it would eross on the bridge used by the Chieago & Northwestern Railway, but the latter obtained a permanent injunction forbidding them, and the end of that branch of the line remains on the east side of the river. Thus after nearly twenty years
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Prophetstown’s post office has been open since 1844. Another post office, Prophets Town, opened and closed inside today’s town.
Prophets Town
1835–1838
Prophetstown
1844–today
18301930today
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Questions about Prophetstown’s history
What year was Prophetstown founded?
The Prophetstown post office opened in 1835, the earliest record of the town by name (U.S. post office records).
How does Prophetstown rank for history?
Prophetstown is more historic than 73% of U.S. towns. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in Prophetstown?
34% of Prophetstown’s homes were built before 1940 (Census estimate, ±8.2 points), against a typical 11% for an Illinois town; the median home was built in 1957.
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).
From Wikimedia Commons (4), Wikipedia, Wikidata and Wikipedia for famous people, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.