Where is San Dimas, California, U.S.

Written and Fact-checked by | Updated On: May 11, 2026

Where is San Dimas, California Located in the United States? - San Dimas is a city located in the Los Angeles County in California, United States. San Dimas lies between 34.1067 Degrees North latitudes and -117.8067 Degrees West longitudes.

Location Map of San Dimas, Los Angeles, California

Where is San Dimas Located in Los Angeles, California

About Map: The map shows the location of San Dimas in Los Angeles County, in the U.S. state of California.

San Dimas Map, California, USA

About San Dimas Map: This Google Map provides a detailed view with zoom, satellite, and street options to explore the area and its surroundings.

About San Dimas, Los Angeles County, California

San Dimas is located in Los Angeles County in the U.S. state of California, United States. It lies in the southern part of the state in the state of the United States within the eastern San Gabriel Valley near the foothills of the San Gabriel Mountains. The city was incorporated in 1960 and was named after the Spanish land grant Rancho San Jose de San Dimas, and it developed from an agricultural and ranching community into a suburban residential city.

Population

According to the United States Census Bureau, the population of San Dimas is 34,924 as recorded in the 2020 Census, and the population density is approximately 2,300 people per square mile.

Geography

According to the United States Census Bureau, San Dimas covers a total area of approximately 15.4 square miles (about 39.9 square kilometers), including about 15.4 square miles (39.9 square kilometers) of land and a minimal amount of water area.

Location and Surroundings

San Dimas is situated east of Glendora and west of La Verne, positioned at the foothills of the San Gabriel Mountains in eastern Los Angeles County. The city features residential neighborhoods, nearby hills, and access to recreational lakes and parks. Interstate 210 and State Route 57 provide major transportation routes connecting San Dimas to surrounding communities across Southern California.

Top Attractions

San Dimas offers parks, recreational lakes, and cultural attractions that support tourism and outdoor activities. Popular destinations include Bonelli Regional Park, Raging Waters Los Angeles water park, and the historic downtown district. The city hosts community festivals, outdoor recreation programs, and seasonal events throughout the year.

Transportation

San Dimas is served by Interstate 210 and State Route 57, offering convenient highway access throughout Los Angeles County and Southern California. Public transportation includes regional bus services and nearby Metrolink rail connections linking the city to surrounding communities. The nearest major airport is Ontario International Airport, located approximately 18 miles to the east.

Explore more cities in California or visit the United States Map section to learn more about the country’s geography.

Sources:

Population and area data sourced from the United States Census Bureau (2020 Census). General city information referenced from the Official San Dimas City Website.

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San Dimas City Facts

CitySan Dimas
StateCalifornia
CountyLos Angeles County
CountryUnited States
RegionSan Gabriel Valley
IncorporatedAugust 4, 1960
Founded1887
Total AreaApproximately 15.5 sq mi (40.1 km2)
Land AreaApproximately 15.5 sq mi (40.1 km2)
ElevationApproximately 1,007 ft (307 m)
Population (2023 estimate)Approximately 34,000+
Population (2020 Census)34,924
Population DensityApproximately 2,200 people per sq mi
Time ZonePacific Time (UTC-8 / UTC-7 DST)
ZIP Codes91773
Area Code909
Major HighwaysInterstate 210, State Route 57
Public TransitFoothill Transit Bus, Metrolink (nearby)
Major AttractionsRaging Waters Los Angeles, Bonelli Regional Park, San Dimas Canyon Park
Official Websitehttps://www.sandimasca.gov/

Transportation and Connectivity in San Dimas, California

Transportation TypeDetails
Airport NameOntario International Airport / Los Angeles International Airport
IATA CodeONT / LAX
PortPort of Los Angeles and Port of Long Beach (Regional Access)
Major HighwaysInterstate 210, State Route 57, State Route 71
Train ServiceMetrolink rail service available nearby
Local Bus/Transit ServiceFoothill Transit
  • Interstate 210 (Foothill Freeway): Provides east-west access across the San Gabriel Valley.
  • State Route 57: Connects San Dimas with Orange County and inland communities.
  • State Route 71: Provides access toward Pomona and the Inland Empire.
  • Ontario International Airport: Offers convenient regional air service for the San Gabriel Valley area.

Top Places to Visit in San Dimas, California

Landmark NameType
Frank G. Bonelli Regional ParkRegional Park and Recreation Area
Raging Waters Los AngelesWater Park
San Dimas Canyon ParkNature Park
Pacific Railroad MuseumTransportation Museum
San Dimas Historical Society MuseumHistory Museum
Walker HouseHistoric Landmark
Via Verde Country ClubGolf and Recreation Facility
Bonelli Park LakeLake Recreation Area
Walnut Creek Community Regional ParkOutdoor Recreation Area
San Gabriel Mountains National MonumentMountain Recreation Area

Driving Distances from San Dimas, California to Nearby Cities

CityStateDistance (mi)Approx. Drive Time
PomonaCalifornia7 mi15 minutes
ClaremontCalifornia5 mi10 minutes
West CovinaCalifornia12 mi20 minutes
PasadenaCalifornia25 mi40 minutes
Los AngelesCalifornia35 mi50 minutes
AnaheimCalifornia35 mi45 minutes
RiversideCalifornia35 mi45 minutes
Santa AnaCalifornia45 mi1 hour
San BernardinoCalifornia40 mi50 minutes
San DiegoCalifornia120 mi2 hours

Colleges and Universities Near San Dimas, California

Institution NameTypeLevelNotable For
California State Polytechnic University, PomonaPublicUniversityEngineering, agriculture, business, hospitality, and applied sciences
Mt. San Antonio CollegePublicCommunity CollegeCareer training, technology, athletics, and transfer programs
University of La VernePrivateUniversityBusiness, education, law, and professional studies
Azusa Pacific UniversityPrivateUniversityHealth sciences, education, business, and liberal arts
Bonita Unified School DistrictPublicK–12 DistrictPrimary and secondary education

Waterbodies Near San Dimas, California

Puddingstone Reservoir, Bonelli Park Lake, Walnut Creek, San Dimas Wash, and nearby waterways throughout the San Gabriel Valley.

Golf Courses Near San Dimas

Via Verde Country Club, San Dimas Canyon Golf Course, Marshall Canyon Golf Course, and Glendora Country Club.

San Dimas, California — Key Historical Facts

  • The San Dimas area was originally inhabited by the Tongva Native American people before European settlement.
  • The community developed from agricultural lands that produced citrus, grains, and other crops in the San Gabriel Valley.
  • San Dimas was incorporated as a city in 1960 and grew as part of the expanding Los Angeles metropolitan area.
  • The city became known for its citrus heritage and historic downtown district.
  • Today, San Dimas is recognized for its parks, recreation facilities, historic sites, and location near the San Gabriel Mountains.

Stadiums and Sports Facilities Near San Dimas

Facility NameTypeLocation
San Dimas High School StadiumHigh School Sports StadiumSan Dimas, California
Bonelli Park Recreation FacilitiesOutdoor Sports FacilitySan Dimas, California
Mt. San Antonio College Sports FacilitiesCollege Sports FacilityWalnut, California
Dodger StadiumProfessional Baseball StadiumLos Angeles, California
BMO StadiumProfessional Soccer StadiumLos Angeles, California

References

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