More historic than 14% of U.S. towns · #606 of 847 in California. What drives it
Most of Corcoran was built recently: 6% of its homes predate 1940 and the median home dates from 1981. Below: 6 old photos and papers, maps from 1912 on, and the census since 1920.
Founding year: the first Corcoran post office (Blevins & Helbock, CC0). Wikidata: 1905.The full story ↓
History grade
What drives Corcoran’s History grade
On its age, its old homes and the National Register, Corcoran is more historic than 14% of U.S. towns, #606 of 847 in California. Its share of homes from before 1940 holds the grade up; its age pulls it down.
D
HistoryA character grade: shown, never part of Corcoran’s overall grade.
Few California towns list much on the Register (a typical California town has 0.0 per 10,000 residents, the U.S. 2.4), so Corcoran’s 0.0 sits below most of its state (31% of California 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 C−. The pre-1940 share (±2.7 points) is firm at this size. The founding year is the first post office, not a stated founding date; Wikidata’s 1905 falls in the same era, so the grade doesn’t depend on which one is used.
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 →
Corcoran was founded by Hobart Johnstone Whitley, a prominent land developer from southern California, who took the lead in building Corcoran (the main street of the community is named in his honor). Liking what he saw during a visit to the area in 1905 (a blacksmith shop, small store, scattered homes and a lush, untapped vista with herds of grazing wild hogs, horses and steers) Whitley purchased 32,000 acres (130 km2) to start development. Much like in the San Fernando Valley (Van Nuys and Canoga Park his "creations"), Whitley "leveraged" his holdings with the support of important Los Angeles businessmen. Whitley first intended the town be named "Otis", after Harrison Gray Otis of the Los Angeles Times, and streets as Otis, Sherman, Letts (the Broadway store) and Ross (after his son, Ross Whitley) show the connections. Whitley, it is claimed, purchased and platted some 150 towns over t…
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 Corcoran post office opened in 1901, the earliest record of the town by name (U.S. post office records). Wikidata gives 1905.
How does Corcoran rank for history?
Corcoran is more historic than 14% of U.S. towns, #606 of 847 in California. 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 Corcoran?
6% of Corcoran’s homes were built before 1940 (Census estimate, ±2.7 points), against a typical 3.4% for a California town; the median home was built in 1981.
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), the Library of Congress (2), 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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