Birth of Pinellas County Even into the early years of the 20th century, West Hillsborough had no paved roads, and transportation posed a major challenge. A trip to the county seat, across the bay in Tampa, was generally an overnight affair and the automobiles that existed on the peninsula at that time would frequently become bogged down in the muck after rainstorms. Angry at what was perceived as neglect by the county government, residents of Pinellas began a push to secede from Hillsborough. They succeeded, and on January 1, 1912, Pinellas County came into being. The peninsula, along with a small part of the mainland were incorporated into the new county.
Birth of Pinellas County Even into the early years of the 20th century, West Hillsborough had no paved roads, and transportation posed a major challenge. A trip to the county seat, across the bay in Tampa, was generally an overnight affair and the automobiles that existed on the peninsula at that time would frequently become bogged down in the muck after rainstorms. Angry at what was perceived as neglect by the county government, residents of Pinellas began a push to secede from Hillsborough. They succeeded, and on January 1, 1912, Pinellas County came into being. The peninsula, along with a small part of the mainland were incorporated into the new county.