Do billboards work, and what ROI can you realistically expect?

Short answer

Yes, billboards work. A Nielsen analysis of roughly 1,200 campaigns found an average ROI of 497% (per the widely cited OAAA/Benchmarketing analysis), meaning about $6 returned for every $1 spent. Brand recall from billboards averages 55%, nearly 2.6 times higher than digital banner ads at 21%.

What the research says about billboard effectiveness

Billboards reach approximately 80% of U.S. consumers weekly. Unlike digital ads that can be skipped or blocked, outdoor placements offer unavoidable visibility that produces repeated exposure regardless of a viewer's online habits.

Eye-tracking and neurological research shows that 71% of drivers and pedestrians consciously observe outdoor advertising during regular navigation. Attention duration differs by format: digital billboards capture attention for an average of 2.4 seconds, while static billboards average 1.6 seconds. Both windows are short, which shapes creative strategy, but the sheer frequency of exposure compensates for brevity.

On ROI, physical billboards and digital ads are close competitors overall, with billboards at roughly 40% industry-wide ROI versus roughly 38% for digital ads. The headline Nielsen figure of 497% reflects optimized campaigns rather than a floor expectation, but it demonstrates the ceiling when location, creative, and tracking align.

Real campaign results

Several documented campaigns show what billboards can produce when paired with trackable response mechanisms:

A personal injury law firm ran six strategically placed billboards over 12 weeks, generating 847 qualified calls. Of those, 23% converted to consultations and 8% to retained clients, producing over $1 million in attributable revenue and an 816% ROI.

A local restaurant billboard campaign produced a 650% ROI through increased foot traffic and sales.

A QR code campaign across multiple placements collected 40,000 scans. Fifteen percent of those scans converted to online orders, yielding a 1,900% ROI.

Cash App's campaign around the U.S. Grand Prix combined large-format billboards, murals, and wild posting aimed at millennials and Gen Z. Sensitivity analysis placed the ROI range between 3% on the conservative end and 1,450% on the aggressive end, depending on attribution assumptions.

The pattern across cases is consistent: billboards combined with a trackable element produce outcomes that can be directly measured rather than estimated.

Nine ways to make billboards convert

Strategic location. High-traffic corridors, urban centers, and placements near points of sale maximize impressions and relevant exposure.

Simple messaging. Brief exposure windows demand minimal text and a single, clear call to action. The message must be readable in under three seconds.

Trackable elements. QR codes, unique phone numbers, and dedicated URLs connect billboard exposure to measurable outcomes and improve attribution accuracy.

Repetition along a route. Multiple placements along a single commute reinforce the message through repeated exposure, raising recall and response rates.

Digital billboard capabilities. Rotating creatives and animations increase engagement. Weigh the higher cost against the dynamic advantage before committing.

Digital channel alignment. Synchronizing billboard messaging with search campaigns and social ads amplifies brand lift and captures conversions across channels.

Emotional or humorous creative. Content that triggers emotion or humor tends to be more memorable and can generate earned media coverage beyond the paid placement.

Brand consistency. Creatives that match the broader brand identity build recognition over time and strengthen trust with repeated audiences.

Compelling offers. Featuring a specific promotion or limited-time offer, especially when linked to a trackable CTA, can motivate action that goes beyond passive awareness.

Measuring what billboards actually do

Attribution has historically been the hardest part of outdoor advertising. Several techniques now close the gap:

Geofencing creates a virtual boundary around a billboard location and tracks which mobile devices entered the zone, then monitors whether those devices later visited a store or searched a brand online.

Branded search lift monitoring tracks increases in keyword searches for a brand during and after a campaign as indirect evidence of billboard impact.

Brand lift surveys measure recall and awareness before and after a campaign among exposed versus unexposed audiences.

Direct response metrics from QR codes, unique URLs, and dedicated phone numbers produce the clearest conversion data and are the most defensible evidence of ROI.

An integrated approach combining at least two of these methods gives advertisers the most reliable picture of what a campaign produced.

How AdQuick handles airport advertising

Airports concentrate high-income, high-dwell-time audiences in a single physical environment, making them one of the highest-value OOH placements available. AdQuick's platform lets buyers plan, purchase, and measure airport advertising alongside traditional billboard inventory, applying the same geofencing and attribution tools described above. Campaigns can be filtered by terminal, concourse, and gate area to match audience demographics, and reporting consolidates impressions, foot traffic lift, and conversion data in one dashboard.