Meanings
proper noun
- One of 58 counties in California, United States. County seat: Redwood City.
Cite this entry
APA
San Mateo County. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/San%20Mateo%20County
MLA
“San Mateo County.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/San%20Mateo%20County. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “San Mateo County,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/San%20Mateo%20County.
Source: San Mateo County on Wiktionary, CC BY-SA 4.0.