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About Golden State Overnight
Golden State Overnight (GSO) was founded in 1995 with a simple notion: that California companies should not be required to pay high national delivery rates for in-state shipments.
Today, GSO offers guaranteed ground and priority overnight delivery to every address in California, and select metropolitan areas of Nevada and Arizona. GSO customers enjoy a premium level standard of service, including later pickups, earlier deliveries and proactive package tracking, as well as unsurpassed customer service and a substantial continued cost savings over the national carriers.