Fair Day Hillsborough County 2025 Registration. The 2025 hillsborough county fair is right around the corner, and the entry deadline for many of our exciting contests is october 1st! Due to popular demand, the hillsborough county fairgrounds will open the tampa bay’s festival of lights & santa's village until dec 29.

We know that importance of providing. Twelve fun days packed with rides, food, entertainment, rodeos, truck & tractor pulls, a demo derby, contests, livestock, and more!.