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Pomona Valley

1910 postcard image of Pomona, California with Mount San Antonio (Mt. Baldy) in distance.

The Pomona Valley, which is also nicknamed the "Inland Valley", is located in the Inland Empire between the San Gabriel Valley and Cucamonga Valley in Southern California, straddles the border between Los Angeles County and San Bernardino County. It ranges from the city of San Dimas from the far west to Fontana to the Far East portion of the valley. The alluvial valley is formed by the Santa Ana River and its tributaries. Due to its geographic location, this valley is one of many valleys in the Inland Empire.

Physical dividing lines separating Pomona Valley from San Bernardino Valley on the east include the Jurupa Hills and the San Antonio Creek, which runs south out of the San Gabriel Mountains watershed around Mount San Antonio (known locally as Mt. Baldy) and joins the Santa Ana River south of Chino. Pomona Valley is separated from San Gabriel Valley to the west by the northeastern end of the San Jose Hills, running approximately along State Route 57. The northern boundary is the San Gabriel Mountains; on the south lie the Chino Hills. Historic U.S. Route 66 runs east-west across the north side of Pomona Valley.

On March 1, 1893 the California Assembly voted 54-14 for a new county to form in the region, to be named San Antonio County, with Pomona as its seat. Los Angeles interests in the Senate rejected the concept, however, and today the eastern and western portions of the valley remain divided between San Bernardino and Los Angeles counties.[1]


  • Communities 1
  • Demographics 2
  • Local interest 3
  • Cityscape 4
  • Climate 5
  • Institutions of higher learning 6
  • Transportation 7
    • International Airports 7.1
    • Public transit 7.2
    • Highways 7.3
  • Major surface thoroughfares serving the Pomona Valley 8
  • Media 9
    • Newspapers serving the area 9.1
  • See also 10
  • References 11
  • External links 12


The cities of Pomona Valley include:


The residents of the Pomona Valley are predominantly White and Latino. In contrast to the San Gabriel Valley, the population of Asian Americans is much smaller. Northern areas of the valley that contain the cities of Claremont, La Verne, and San Dimas have large Caucasian populations. Southern portions of the valley that contain the cities of Pomona, Montclair, and Ontario have large Hispanic populations. Portions of the Pomona Valley such as the Chino Hills and Diamond Bar areas contain rather large Asian Populations.

Local interest


Pomona Valley from Diamond Ranch High School


The Pomona Valley experiences a Mediterranean Climate. In contrast to the San Gabriel Valley, The Pomona Valley can get much hotter summers with high temperatures ranging from the triple digits. Due to its elevation ranging from 800 to 2200 feet, trace amounts of snowfall can occur anywhere above 1500 feet. On the valley floor, average rainfall amounts range anywhere from 12 to 16 inches. Foothill communities can get anywhere from 14 to 18 inches of rain a year. In the fall (fire season), Santa Ana Winds can occur giving strong offshore winds from the Cajon Pass.

Institutions of higher learning

Major subregions of the Inland Empire


International Airports

Public transit


The Pomona Valley is served by freeways:

Major surface thoroughfares serving the Pomona Valley

  • Central Ave (Chino, Montclair, Upland)
  • Euclid Ave. (Ontario, Upland, Chino)
  • Foothill Blvd.
  • Grand Ave. (Chino Hills, Diamond Bar)
  • Garey Ave. (Chino Hills, Pomona, Claremont)
  • Holt Ave. (Pomona; becomes Valley Blvd from Pomona to Los Angeles)
  • Holt Blvd. (Pomona, Montclair, Ontario)
  • Mission Blvd. (Pomona, Montclair, Ontario)
  • Mount Baldy Road (Claremont, San Antonio Heights, and Mt. San Antonio)

In Claremont, Mt. Baldy Road leads into the Mt. Baldy Ski Lifts of Mount San Antonio (nicknamed "Mt. Baldy") in the San Gabriel Mountains.

Brackett Field in pomona


Newspapers serving the area

See also


  1. ^ "History timeline of the Inland Empire, California".  

External links

  • The Historical Society of Pomona Valley
  • Pomona Valley Art Association

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