Hillsboro is a city in and the county seat of Hill County, Texas, United States. It is located between Dallas, Fort Worth and Waco, directly on Interstate 35 in North Central Texas. Hillsboro draws trade from throughout the county, and from Interstate 35 travelers between Dallas, Fort Worth, and Waco. Hillsboro is the gateway to Lake Whitney, Lake Whitney State Park, and nearby Lake Aquilla- all within a 15 minute drive from Hillsboro, Texas.