CLEAR CHANNEL
Headquarters: San Antonio, TX
Website: www.clearchannel.com
Other Properties In: Venues, Radio
Owns an estimated 1,000 signs
QUICK FACT The nation's three largest outdoor advertising firms -- Viacom, Clear Channel, and Lamar -- own more than one million billboards across the country. These three companies have acquired 500 smaller companies in the past 20 years.
 
CBS Corporation
Headquarters: New York, NY
Website: www.cbscorporation.com
Other Properties In: TV, Radio
Owns an estimated 250 signs
 
Steen Advertising
Headquarters: Philadelphia, PA
Website: www.steen.com
Owns an estimated 1,000 signs
 
Chesapeake
Owns an estimated 900 signs
 
Titan WORLDWIDE
Headquarters: Offices in 10 cities
Website: www.titanoutdoor.com
All advertising in SEPTA vehicles & stations
 
Interstate
Unknown
 
Metro Lights
Headquarters: New York, NY
Website: www.metrolights.com
Unknown
 
Keystone Outdoor
Headquarters: Philadelphia, PA
Website: www.keystoneoutdoor.com
Unknown
 
Krain Outdoor
Headquarters: Philadelphia, PA
Unknown
 






There is no record of the exact number of billboards each company owns in Philadelphia because many throughout the city are not licensed or regulated. The City charges a $100 annual license fee per billboard and estimates that over half the billboards in Philadelphia are unlicensed (and are therefore illegal).
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