Its Register listing is the Switzer, P.A. Residence. Its Register listing is the Switzer, P.A. Residence. Below: maps from 1893 on and the census since 1870.
Founding year: the first Hamilton post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Hamilton’s History grade
On its age, its old homes and the National Register, Hamilton is more historic than 65% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
B
HistoryA character grade: shown, never part of Hamilton’s overall grade.
Missouri towns list about as much on the Register as the country (a typical Missouri town has 2.4 per 10,000 residents, the U.S. 2.4), so Hamilton’s 5.7 sits above most of its state (66% of Missouri towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C+ to A−. The pre-1940 share is a Census survey estimate (±7.3 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 Hamilton’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
Hamilton owes its existence largely to the Hannibal & St. Joseph Railroad.
Prior to 1854 the area around Hamilton was unsettled prairie land belonging to the U.S. Government. With the coming of the railroad, the Hamilton Town Company was formed to develop a tract of land along the rails.
At first, the name Prairie City was intended for the new community. However, Albert Gallatin Davis, a key member of the Town Company, chose Hamilton instead, in honor of two early Americans, Founding Father and first Treasury Secretary Alexander Hamilton, and Joseph Hamilton, an early American lawyer and military leader killed at the Battle of the Thames during the War of 1812.
The Hamilton post office opened in 1858, the earliest record of the town by name (U.S. post office records).
How does Hamilton rank for history?
Hamilton is more historic than 65% 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.
What is on the National Register in Hamilton?
One place: the Switzer, P.A. Residence (listed 2024).
How old are the homes in Hamilton?
27% of Hamilton’s homes were built before 1940 (Census estimate, ±7.3 points), against a typical 8.4% for a Missouri town; the median home was built in 1967.
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 (9), the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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