1774History
The first known European exploration of the area was in 1774, when Juan Bautista de Anza passed through on the first overland expedition of Las Californias, from New Spain-Mexic...
1837Government
The area was originally developed in 1837 with the Mexican land grant from Governor Juan Bautista Alvarado to Ygnacio Palomares and Ricardo Vejar for the Rancho San Jose, then i...
1864History
Ygnacio Palomares died in 1864, and his widow began selling the ranch land in 1865.
1866History
In 1866, Schlesinger and Tischler sold the ranch to Louis Phillips.
1887Infrastructure
The arrival of the Los Angeles and San Gabriel Valley Railroad in 1887, later purchased by Santa Fe Railroad, led to La Cienega Mud Springs being first mapped.
1960Government
San Dimas incorporated as a city in 1960, and is now known for its Western art.
1970History
== Demographics ==
San Dimas first appeared as a city in the 1970 U.S.
1971History
In 1971, the San Dimas Golf Course was purchased.
1972Architecture
In 1972, San Dimas Community Hospital opened its 92-bed facility.
1981Education
In 1981, the San Dimas Swim and Racquet Club was built next to San Dimas High School, according to the San Dimas Historical Society.
2000History
=== 2000 census ===
As of the census of 2000, 34,980 people, 12,163 households, and 8,988 families were residing in the city.
2004Civil Rights
== See also ==
San Dimas Hotel
== References ==
== External links ==
Official website
San Dimas Chamber of Commerce Archived March 30, 2004, at the Wayback Machine
2025Architecture
The extended line includes the San Dimas station which opened on September 19, 2025.