Oldsmar is a rural city in Pinellas County, Florida, United States. The population was 13,591 at the 2010 census. Oldsmar's history dates to 1913 when automobile pioneer Ransom E. Olds purchased 37,541 acres of land by the northern part of Tampa Bay to establish "R. E. Olds-on-the-Bay". The name was later changed to Oldsmar, then to "Tampa Shores" in 1927, and finally back to Oldsmar in 1937. Ransom Olds named some of the original streets himself, such as Gim Gong Road. Currently Oldsmar's downtown is being developed which its promoters hope will bring back the "old Florida" feel to the city. Oldsmar celebrates its history every year with Oldsmar Days and Nights, where residents and visitors take part in parades, car shows and carnival rides. Notable Oldsmar businesses include the nearby Tampa Bay Downs, the production office of Nielsen Media Research, and Children's Charity Kids Wish Network.