Oklahoma Oil Town is a term used to refer to two cities in Oklahoma, Tulsa and ADA. Tulsa is a city of approximately 400, 000 people located in the northeastern part of the state. It is the second-largest city in Oklahoma and is known for its oil industry. ADA is a smaller city of about 17, 000 people located in the south-central part of the state. It is also known for its oil industry and is home to East Central University. Both Tulsa and ADA are important hubs for the oil industry in Oklahoma.