More historic than 3% of U.S. towns · #581 of 638 in Florida. What drives it
Most of Oldsmar was built recently: 0.0% of its homes predate 1940 and the median home dates from 1988. Below: 6 old photos and papers, maps from 1943 on, and the census since 1930.
The Oldsmar post office opened in 1917, the earliest record of the town by name. Wikidata gives 1624. Another post office, Tampashores (1925), opened inside today’s city and later closed.
First census: 280 in 19302020 census: 14,898109 years
How historic is Oldsmar?
D−
More historic than 3% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Oldsmar post office (Blevins & Helbock, CC0). Wikidata: 1624.The full story ↓
History grade
What drives Oldsmar’s History grade
On its age, its old homes and the National Register, Oldsmar is more historic than 3% of U.S. towns, #581 of 638 in Florida. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
D−
HistoryA character grade: shown, never part of Oldsmar’s overall grade.
Few Florida towns list much on the Register (a typical Florida town has 0.0 per 10,000 residents, the U.S. 2.4), so Oldsmar’s 0.0 sits below most of its state (33% of Florida 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 D− to D. The pre-1940 share (±0.4 points) is firm at this size. The founding year is the first post office, not a stated founding date; Wikidata gives 1624.
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 →
A number of archeological digs in the Oldsmar area revealed small campsites as well as permanent villages that date from the Archaic period (c. 8000 to 1000 BC).
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The Oldsmar post office opened in 1917, the earliest record of the town by name (U.S. post office records). Wikidata gives 1624.
How does Oldsmar rank for history?
Oldsmar is more historic than 3% of U.S. towns, #581 of 638 in Florida. 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 Oldsmar?
0.0% of Oldsmar’s homes were built before 1940 (Census estimate), against a typical 0.6% for a Florida town; the median home was built in 1988.
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 (5), the Library of Congress (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) 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.