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Out-of-home advertising, including billboards, is often one of the most cost-efficient forms of media. Industry research has shown that billboard CPMs can be significantly lower than many other advertising channels, including television, magazines, and some online advertising. Some outdoor advertising estimates place billboard CPMs in the low single digits to under $10 per thousand impressions, depending on the market, location, traffic, and board type. By comparison, other media can often cost much more to reach the same number of people. OAAA defines CPM as the cost of delivering 1,000 impressions from people who notice the advertising display, which is one of the main ways advertisers compare media efficiency.
The other advantage is simple: people will see your billboard. A billboard cannot be skipped, muted, blocked, deleted, or lost in an email spam folder. Drivers and passengers passing that location are exposed to the message again and again. That repeated exposure builds memory. When the customer finally needs a plumber, roofer, lawyer, restaurant, doctor, bank, church, or local service, the business they have seen every day has a better chance of being remembered.
Digital marketing is important, but a business should not rely on digital alone to find customers. Online advertising can be affected by bidding costs, competition, platform rules, ad fatigue, tracking restrictions, and algorithm changes. SEO is also valuable, but search rankings are not guaranteed. Google states that it makes broad core updates several times per year, and those updates can change how websites rank in search results.
Search is also changing because of AI answers, AI Overviews, and zero-click search behavior. Some users now get answers directly on the search page or from AI tools without ever clicking through to a business website. Recent research has found that AI-generated search summaries can reduce traffic to source websites in some cases, which means businesses need more than one way to stay visible.
That is where billboards are powerful. They are physical, public, and always present. A billboard does not depend on a search engine algorithm deciding where to rank you. It does not depend on a social media platform showing your post. It does not depend on someone opening an email. It puts your name, message, phone number, and brand directly in front of the market.
The best advertising plan often combines digital marketing with billboard advertising. Digital can help capture searches and retarget interested customers. Billboards can build trust, awareness, and local name recognition before the customer ever searches.
Best rule: digital marketing can help people find you, but billboard advertising makes sure people know you exist.