Half of Avocado Heights’ homes were built after 1963
More historic than 22% of U.S. towns · #429 of 847 in California. What drives it
Most of Avocado Heights was built recently: 6% of its homes predate 1940 and the median home dates from 1963. Below: maps from 1894 on and the census since 1970.
On its age, its old homes and the National Register, Avocado Heights is more historic than 22% of U.S. towns, #429 of 847 in California. Its share of homes from before 1940 holds the grade up; its National Register listings pull it down.
C−
HistoryA character grade: shown, never part of Avocado Heights’ 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 Avocado Heights’ 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 (±2.2 points) is firm at this size.
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 Avocado Heights’ past
Read from the archive, the National Register and the record. The page puts what stands out first.
Every edition of the U.S. Geological Survey’s map of Avocado Heights. Tap a year, or press play to watch the town change.
1894Pomona sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Avocado Heights.
The story so far
Avocado Heights, in brief
Wikipedia doesn’t have a history of Avocado Heights yet. The photos, dates and memories neighbors add here are how it gets written.
Avocado Heights () is an unincorporated community and census-designated place (CDP) in the San Gabriel Valley of Los Angeles County, California, United States. It is almost entirely surrounded by the City of Industry with only a small strip of unincorporated Los Angeles County separating it from South El Monte. It is in close proximity to both the Pomona (SR-60) and San Gabriel (I-605) freeways. To the west is the San Gabriel River and the California Country Club. Avocado Heights is approximately 15 miles (24 km) from the downtown Los Angeles Civic Center. The population was 13,317 at the 2020 census. A significant portion of Avocado Heights remains equestrian and semi-rural, with many home…
Between the 2010 and 2020 censuses its population fell from 15,411 to 13,317 (-14%).
Intro from Wikipedia. Population: U.S. Census Bureau.
By decade
No old photos in the archives yet
Weddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
Be the first to add onePhotograph a print flat, in daylight, no flash.
Avocado Heights is more historic than 22% of U.S. towns, #429 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 Avocado Heights?
6% of Avocado Heights’ homes were built before 1940 (Census estimate, ±2.2 points), against a typical 3.4% for a California town; the median home was built in 1963.
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 U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.
