Lamar Advertising Share: Marketing Lamar Advertising Visit Website Request Info 15806 SW Upper Boones Ferry Rd. Lake Oswego, Oregon 97035 5033726209 About About Lamar offers advertisers a variety of billboard, interstate logo and transit advertising formats, helping both local businesses and national brands reach broad audiences every day. Business Directory • News and Community Issues • Events Calendar • Job Postings • Contact Us • Information & Brochures • Weather • Join The Chamber