Some cell tower companies are American Tower, Crown Castle and SBA Communications. These are the top three Tower Companies in the United States, though their services are not limited to the United States.
American Tower spans the globe in its services, supporting wireless networks in 13 countries across five continents. The company has both existing rights for towers and development rights to build new towers in the United States. The company works to continuously acquire towers to broaden its coverage across the United States.
Crown Castle has approximately 40,000 cell towers in the United States. SBA Communications Corporation was founded in 1989, and operates infrastructure for wireless communications across North, Central and South America.