Most of Vernon was built recently: 9% of its homes predate 1940 and the median home dates from 2012. Below: 7 old photos and papers, maps from 1894 on, and the census since 1910.
Vernon is the site of the Battle of La Mesa on January 9, 1847, when General Stephen W. Kearny again defeated General José María Flores the day after the Battle of Río San Gabriel. Accepting defeat, General Flores fled southeast to Sonora, while Major Pico headed north into the San Gabriel Mountains with a hundred Californios. This ended hostilities in Alta California during the Mexican–American War of 1846–1848. By the dawn of the 20th century, it was a stretch of unincorporated grassland near Los Angeles' flourishing downtown.
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.
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
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). How TownRatings grades history →
From Wikimedia Commons (18), Wikipedia, 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.