Founding year: Wikidata; Wikipedia’s history section gives the same year. First post office: 1878.The full story ↓
History grade
What drives South Gate’s History grade
On its age, its old homes and the National Register, South Gate is more historic than 30% of U.S. towns, #336 of 847 in California. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C
HistoryA character grade: shown, never part of South Gate’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 South Gate’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 B−. The pre-1940 share (±2.3 points) is firm at this size. Two sources give 1923.
Founding year: Wikidata (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 South Gate’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Before the Spanish Colonial Era, the area that became South Gate was in the traditional cultural territory of the Gabrielino. Gabrielino villages or archaeological sites are rumored to have existed at the South Gate Park and at the old City Hall site at the intersection of Post Street and Victoria Avenue. The village of Tajauta was located on the border of South Gate, Lynwood, and Watts.
Among the early Spanish settlers was one of California's first families, the Lugos. The Lugo land grant encompassed a great part of what is now the City of South Gate.
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.
In 1923, according to Wikidata and Wikipedia’s history of the town. South Gate’s post office opened in 1878, and the census of 1930 counted 19,632 people here.
How does South Gate rank for history?
South Gate is more historic than 30% of U.S. towns, #336 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 South Gate?
23% of South Gate’s homes were built before 1940 (Census estimate, ±2.3 points), against a typical 3.4% for a California town; the median home was built in 1952.
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 (11), 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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