On its age, its old homes and the National Register, Los Ranchos is more historic than 15% of U.S. towns. 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 Los Ranchos’ 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 Los Ranchos’ 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 two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share is a Census survey estimate (±3.2 points).
Founding year: our sources. 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 Los Ranchos’ 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 Los Ranchos yet. The photos, dates and memories neighbors add here are how it gets written.
Los Ranchos is a census-designated place in San Luis Obispo County, California. Los Ranchos sits at an elevation of 256 feet (78 m). The 2020 United States census reported Los Ranchos's population was 1,516. Los Ranchos is an area of residential subdivisions surrounding the San Luis Obispo Country Club. It is located between the San Luis Obispo County Regional Airport and Edna, California.
Between the 2010 and 2020 censuses its population grew from 1,477 to 1,516 (+3%).
Intro from Wikipedia. Population: U.S. Census Bureau.
Los Ranchos is more historic than 15% 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 Los Ranchos?
3% of Los Ranchos’ homes were built before 1940 (Census estimate, ±3.2 points), against a typical 3.4% for a California town; the median home was built in 1982.
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 (1) 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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