Walnut, California
Area codes 626, 840, 909 · Population: 29,172
Pacific (PT)
California
Pop. 29,172
Area Codes Serving Walnut
About Walnut, California
Walnut is a city in California that is served by area codes 626, 840, 909. The city has a population of approximately 29,172 residents and is located in the Pacific Time Zone.