The unincorporated community of Tres Pinos (Spanish: Three Pines/Pinetrees) is located in the County of San Benito along State Route 25. The community adjoins the south edge of Hollister's development as of 2006. NAD27 latitude and longitude for the community are listed as Coordinates: in the National Geographic Names Database. Elevation is listed as 530 feet (162 m) AMSL and the feature ID number is 1660025.
Wired phone numbers in the community have a default format of (831) 628-xxxx. There is no postal delivery and residents use post office boxes for mail delivery. The ZIP Code for the community is 95075 and it is contained in the Monterey Bay Unified Air Pollution Control District. Tres Pinos Elementary School, a K-8 school, is operated by Tres Pinos Union Elementary School District in the town.
Hazel Hawkins Memorial Hospital is located in Hollister, just under five miles (8 km) north of the town.
In the state legislature Tres Pinos is located in the 12th Senate District, represented by Republican Jeff Denham, and in the 28th Assembly District, represented by Democrat Anna M. Caballero. Federally, Tres Pinos is located in California's 17th congressional district, which has a Cook PVI of D +17 and is represented by Democrat Sam Farr.