It is located about 259 miles south-southeast of CA's capital city of Sacramento. Daylight saving time should be observed in the area where the zip code is located. The city for 93454 is usually the name of the main post office. Santa Maria, TX Unacceptable: Bluetown Stats and Demographics for the 78592 ZIP Code. In the most recent US census the population of Santa Maria was 99553. It is located about 259 miles south-southeast of CA's capital city of Sacramento. Foreign tourist & local travelers alike have a lot to discover in Bulacan with many old Spanish churches, museums, historical places, eco-parks, golf courses, and cultural events to see all year long. Santa Maria is a city of Santa Barbara, California in the Pacific West region of the USA. Urb Santa Maria is in San Juan, Puerto Rico in the region of the USA. Just use our lookup by address feature at the top of the page or click on the our interactive map to access your needed zip code. Locate the correct postal codes for Santa Maria in the list above by choosing the destination city or town you are sending to. Find MoreCities in California that start with S, Post Office Address:722 E MAIN ST STE 106, Post Office Suburb:SANTA MARIA, CA, 93454-4597,