Walnut Creek is situated in the San Francisco Bay Area, about 16 miles east of Oakland and approximately 25 miles northeast of San Francisco. The city's name comes from the native walnut trees that once thrived in the area and a nearby creek that runs through the region.

The city is known for its suburban feel and relatively upscale lifestyle. It's a popular place for families, professionals, and retirees who seek a quieter and more residential environment while still being close to urban amenities.

While not a major business center itself, Walnut Creek is well-situated for those who commute to various employment hubs in the Bay Area, including San Francisco, Oakland, and the Silicon Valley. The city is home to John Muir Health's flagship hospital, which provides medical services to the local community.