Pomona | California, United States - Encyclopedia Britannica

Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos Pomona Introduction References & Edit History Related Topics Images Quizzes Guess the City by Its River Quiz Contents Geography & Travel Cities & Towns Cities & Towns P-S CITE verifiedCite While every effort has been made to follow citation style rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions. Select Citation Style MLA APA Chicago Manual of Style Copy Citation Share Share Share to social media Facebook X URL https://www.britannica.com/place/Pomona-California Feedback External Websites Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites

• Official Site of The City of Pomona, California, United States
• CRW Flags - Flag of Pomona, California, United States

Britannica Websites Articles from Britannica Encyclopedias for elementary and high school students.

• Pomona, California - Student Encyclopedia (Ages 11 and up)

Pomona California, United States Ask Anything Homework Help Written and fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors Last updated Jan. 7, 2026 •History Britannica AI Ask Anything Table of Contents Table of Contents Ask Anything

News •

Man dies while trying to steal copper wire from Pomona construction site, police say • Jan. 6, 2026, 3:04 PM ET (CBS) Show less

Pomona, city, Los Angeles county, southern California, U.S. It lies in the Pomona Valley at the base of the San Gabriel Mountains. Originally inhabited by Gabrielino (Tongva) Indians, the area became the site of the Rancho San José Spanish land grant in the 18th century. Founded in 1875 and promoted as an agricultural and ranching centre, the city was named for the Roman goddess of fruit that grows on trees. Development was sustained by railroad links and artesian irrigation. Winemaking soon became important but was replaced by citrus and olive growing in the late 19th century. By the mid-20th century rapid residential and industrial growth paralleled the expansion of the Los Angeles metropolitan area. By the beginning of the 21st century the city had developed a diversified economy; products include optics, software, glass, cosmetics, and paper goods. Pomona is the home of California State Polytechnic University (1938); the university’s campus houses the W.K. Kellogg Arabian Horse Center. Other attractions include La Casa Primera de Rancho San José (1837) and Adobe de Palomares (1854). Inc. city, 1888. Pop. (2010) 149,058; (2020) 151,713.

This article was most recently revised and updated by World Data Editors.