Below is a list of Collinsville TX zip codes. For your research we have also included Collinsville Area Code, Time Zone, UTC and the local Grayson County FIPS Code. Each Collinsville Texas zip code has a center Longitude / Latitude point (the Collinsville center is -96.911201477051 / 33.561199188232). For your convenience we have also indicated if that zip code in Collinsville observes Daylight Savings time.