Founding year: the first Pine Valley post office (Blevins & Helbock, CC0).
History grade
What drives Pine Valley’s History grade
On its age, its old homes and the National Register, Pine Valley is more historic than 17% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C−
HistoryA character grade: shown, never part of Pine Valley’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 Pine Valley’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 is a Census survey estimate (±7.6 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 Pine Valley’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Wikipedia doesn’t have a history of Pine Valley yet. The photos, dates and memories neighbors add here are how it gets written.
Pine Valley is a community and census-designated place (CDP) in the Cuyamaca Mountains of the Mountain Empire area, in southeastern San Diego County, California. The population was 1,645 at the 2020 census, up from 1,510 at the 2010 census.
Its first post office opened in 1924. Between the 2010 and 2020 censuses its population grew from 1,510 to 1,645 (+9%).
Intro from Wikipedia. Population: U.S. Census Bureau.
The Pine Valley post office opened in 1924, the earliest record of the town by name (U.S. post office records).
How does Pine Valley rank for history?
Pine Valley is more historic than 17% 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 Pine Valley?
9% of Pine Valley’s homes were built before 1940 (Census estimate, ±7.6 points), against a typical 3.4% for a California town; the median home was built in 1975.
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 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.
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