The USPS Collection Box in Walnut Creek, CA provides a convenient location for individuals to drop off their outgoing mail. Customers can utilize this collection box to send letters and packages through the United States Postal Service. Located in a central area of Walnut Creek, this USPS Collection Box offers a reliable and efficient way for residents to send mail without having to visit a post office. With its accessible location, customers can easily utilize this service for their mailing needs. Generated from their business information