ZIP Code 95234

About Holt

Holt is an unincorporated community in San Joaquin County, California, United States. Holt is located on Roberts Island along the BNSF Railway's Stockton Subdivision line 7.5 miles (12.1 km) west of downtown Stockton and on California State Route 4. Holt has a post office with ZIP code 95234, which was established in 1902. The community was named after the Holt brothers, the founders of the Holt Manufacturing Company, which later became the Caterpillar company.

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