El Cajon, California
city in San Diego County, California, United States
El Cajon ( el kə-HOHN, Spanish pronunciation: [el kaˈxon] ; Spanish: El Cajón, lit. 'the box') is a city in San Diego County, California, United States, 17 mi (27 km) east of downtown San Diego. The city takes its name from Rancho El Cajón, which was named for the box-like shape of the valley that surrounds the city, and the origin of the city's common nickname "the Box".
As of the 2020 census, El Cajon had a population of 106,215.
Name
El Cajón, Spanish for "The Drawer", was first recorded on September 10, 1821, as an alternative name for sitio rancho Santa Mónica to describe the "boxed-in" nature of the valley in which it sat. The name appeared on maps in 1873 and 1875, shortened to "Cajon", until the modern town developed, in which the post office was named "El Cajon".
In 1905, the name was once again expanded to "El Cajon" under the insistence of California banker and historian Zoeth Skinner Eldredge.
History
During Spanish rule (1769–1821), the government encouraged settlement of territory now known as California by the establishment of large land grants called ranchos, from which the English word ranch is derived. Land grants were made to the Roman Catholic Church, which set up numerous missions throughout the region. In the early 19th century, mission padres' search for pastureland led them to the El Cajon Valley.
This brief starts where responsible research should: with the source description of “El Cajon, California” as city in San Diego County, California, United States. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as city in San Diego County, California, United States. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q369947. VIAF identifies the subject as 148722538. The Library of Congress control number is n81144067. Authority coordinates are 32.798, -116.960. 3 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1821, 1873 and 1875.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
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Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
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- Expand the search: follow El Cajon, California primary sources, El Cajon, California archive and Cajon research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “El Cajon, California” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.