Ocotillo Wells is an unincorporated community in San Diego County, California, United States. It is west of the Imperial County line on California State Route 78 at an elevation of . The name became official in 1962 when it was adopted for federal use by the US Board on Geographic Names. A federally recognized variant name, Ocotillo, can cause confusion with the community of Ocotillo, California in Imperial County, to the south on Interstate 8. The ZIP Code is 92004 and the community is in area code 760. The number prefix for wired telephones is 767, which is shared with Borrego Springs. Local landmarks Ocotillo Wells County Airport has two dirt runways. Runway extents are marked by white paving blocks. The Los Puertecitos Historic Site is on California State Route 78 about west of the community. Gasoline is available in Borrego Springs ( west), in Westmorland ( east) and at the Blu-In Cafe ( east). Gas may not always be available the Blu-In Cafe which, besides the gas station, operates a restaurant, store, and RV park. Gas has not been available at the Blu-In since 2011. Several other small businesses sell off-road accessories and rent all-terrain vehicles. Most businesses in the area are closed during the summer months. My Desert Rose, which was a traditional restaurant located at the intersection of State Route 78 and Split Mountain Road, burned down in 2008. The Split Mountain Store and the Iron Door are located about south of State Route 78 on Split Mountain Road. Both of these businesses are open part-time during the summer and full-time during the cooler months. The Split Mountain Store stocks groceries, beer, and parts for sand buggies and trucks. The Iron Door, a small bar, has a private club, two pool tables and serves beer, wine and some food. Local artifacts are on display in the bar, where several layers of decorated dollar bills are stapled to the walls. Climate Ocotillo Wells has a hot desert climate (Köppen climate classification: BWh) with short, mild winters and long, extremely hot summers. Education There are no schools in Ocotillo Wells. The community is served by the Borrego Springs Unified School District. Off-road recreation The California Department of Parks and Recreation operates the Ocotillo Wells State Vehicle Recreation Area which borders the community. This off-road vehicle area is part of the department's Southern Division, Ocotillo Wells District which is headquartered