County Express offers Intercounty routes that connect Hollister and San Juan Bautista to Gilroy, where riders may transfer to Caltrain, Santa Clara Valley Transportation Authority, Monterey-Salinas Transit, or Greyhound Buses.

At Gilroy, one of three terminal stops is made:[2]: 34 [4][5] Some weekday trips (Caltrain and Gavilan College service) bypass San Juan Bautista by traveling on SR 25.

[2]: 34 Local bus service in Hollister is branded as the Tripper,[6] which operates a single loop route that runs anti-clockwise and takes approximately 60 minutes to complete.

[7] The Intercounty and Tripper routes share a stop near the Hollister branch campus of Gavilan College, at 4th and San Benito.

Prior to the COVID-19 pandemic in California, intracity fixed routes in Hollister used three color-coded lines: red, green, and blue.