Carbondale, Orange County, California

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Carbondale, in Orange County, California, is a historical coal mining town in Santiago Canyon, where Santiago Creek had its confluence with Silverado Creek. It had a post office from May 11, 1881, to January 29, 1884, when it was closed and mail sent to the Santa Ana post office.[1][2]

Coal was discovered near Santiago Creek in 1878. A coal mine was established there, called the Santa Clara. In 1881, the Southern Pacific took over the Santa Clara Coal Mine, and a mining camp, Carbondale, with a post office was established on the flat near the creek. Besides the post office, it had a hotel, saloons, a store, and shacks for the miners. Carbondale became the post office for Silverado after its post office was closed on January 22, 1883.[1] When the coal was depleted, the coal mine was closed down in 1884. Carbondale's post office closed, and its buildings and equipment were removed, leaving few other remains.

The site is marked as California State Historical Landmark No. 228 by a plaque located at the Silverado Community Church entrance on Silverado Canyon Rd., 1.1 mi W of the Silverado post office. It is also marked as Orange County Historical Site No. 1 by a plaque located at 8002 Silverado Canyon Rd., Silverado.[3][4]


  1. ^ a b Frickstad, Walter N., A Century of California Post Offices 1848–1954, Oakland, CA: Philatelic Research Society, 1955, pp. 115–126.
  2. ^ USGS Map Name: Black Star Canyon, CA Map Center: N33° 45' 12" W117° 40' 38" from accessed on 4/20/2013
  4. ^ California State Historical Landmarks in Orange County Archived May 4, 2013, at the Wayback Machine.

Coordinates: 33°45′12″N 117°40′38″W / 33.75333°N 117.67722°W / 33.75333; -117.67722