Hollister is unincorporated community in Putnam County, Florida, United States. It is located off State Road 20, between Interlachen and Palatka. Hollister is located at 29°37′21″N 81°48′50″W﻿ / ﻿29.6225°N 81.8139°W﻿ / 29.6225; -81.8139 Coordinates: 29°37′21″N 81°48′50″W﻿ / ﻿29.6225°N 81.8139°W﻿ / 29.6225; -81.8139 (29.6225, -81.8139).