Alamo is an unincorporated community and census-designated place in Contra Costa County, occupying a stretch of the San Ramon Valley between the city of Walnut Creek to the north and the town of Danville to the south. Roughly 28 miles east of San Francisco, it sits within the East Bay region and takes its name from the Spanish word for the poplar trees that once characterized the landscape. The 2020 census recorded about 14,400 residents. Interstate 680 runs along the valley, giving Alamo direct access to the Bay Area's job centers in Walnut Creek, the Tri-Valley, Silicon Valley, and San Francisco. Unlike its incorporated neighbors, Alamo has no municipal government of its own and instead receives services from Contra Costa County, a status that contributes to its distinctly residential, low-density character. Alamo is defined by its estate-like setting: large lots, mature oaks and poplars, and a prevalence of substantial single-family homes set well back from quiet roads. The community is widely associated with affluence and privacy, and its real estate is among the most sought-after in the San Ramon Valley. The natural setting is central to Alamo's appeal. Las Trampas Regional Wilderness rises to the west, offering ridgeline hiking with sweeping views, while the paved Iron Horse Regional Trail passes through the valley, connecting Alamo to Walnut Creek, Danville, and beyond for walking and cycling. Mount Diablo, a defining East Bay landmark, is readily accessible from the community. For homebuyers, Alamo combines high-performing San Ramon Valley schools, a semi-rural residential feel, and convenient freeway and trail access, making it a preferred address for families seeking space and scenery within reach of the broader Bay Area economy.