International Advertising

Billboard Advertising in Ireland

Billboard Advertising in Ireland

National Outdoor Campaigns Across the Republic of Ireland

Ireland is one of Europe's most commercially dynamic markets. With a population of 5.46 million people as of April 2025, a highly educated workforce, and an outsized concentration of global technology, pharmaceutical and financial services companies, Ireland punches well above its weight as an advertising market relative to its size.

The Republic's economy has expanded significantly over the past decade, driven by Ireland's position as the European headquarters of choice for many of the world's largest technology companies, including Google, Meta, Apple, Amazon and LinkedIn.

That concentration of corporate investment has created consumer markets in Dublin, Cork, Galway and Limerick that are younger, better-paid and more internationally minded than the population figures alone might suggest.

One Day Agency helps businesses advertise across Ireland through strategically planned billboard and out-of-home advertising campaigns.

Why billboard advertising in Ireland?

Ireland

Ireland's out-of-home advertising market is one of the fastest growing in Europe, projected to reach US$122.5 million by 2029 at a compound annual growth rate of 4.4%. Recall rates for billboard campaigns in Ireland consistently outperform many digital formats, with well-executed out-of-home creative achieving recall rates of up to 82%, according to data from Outdoor Advertising Ireland.

Dublin is Ireland's primary advertising market, but significant commercial opportunity exists beyond the capital. Cork is Ireland's second city and a major centre for pharmaceutical and technology employment, with companies including Apple, Dell, Pfizer and Johnson & Johnson operating large facilities in the region. Galway is the country's third city and a hub for medical devices, technology and tourism, while Limerick has undergone sustained regeneration and is home to a growing technology and financial services cluster.

Tourist volumes add a further dimension to the Irish advertising market. Dublin Airport handled 33.3 million passengers in 2024 and a record 36.4 million in 2025, making it one of the busiest airports in Europe and a gateway that exposes brands to an audience that extends well beyond Ireland's resident population.

Why One Day Agency?

Dublin

As specialists in outdoor advertising, we work with brands looking to reach audiences across Ireland through well-planned, strategically placed campaigns.

We begin by understanding your brand's objectives, target audience and geographic priorities, then use that insight to identify the right formats, locations and timing across the markets that matter most to your campaign. Whether that means a national network of roadside billboards, a concentrated burst of high-impact placements in Dublin's city centre, targeted formats across Cork and Galway, or transit advertising at Dublin Airport and on the Luas network, we plan and buy every element in-house.

With an experienced media planning and buying team and creatives who can support ad design across digital and physical formats, we provide end-to-end delivery alongside ongoing campaign monitoring and reporting.

Billboard Advertising Formats in Ireland

Latest Out-of-Home Campaigns.

See below our selected work in media planning and buying, click or tap to view.

Formula One Team - International OOH Campaign

FMCG - Out-of-Home Campaign in Ireland.

AI Technology - International Out-of-Home Campaign

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👉 Who will you speak to?

At One Day, you speak directly with senior strategists and directors involved in the work, not account handlers or junior intermediaries. Expect straight advice from experts across Creative, OOH, Digital, and global media activation.

Shelby

Sailor

Scott

Klaudia

"Ireland is a market that agencies consistently underestimate. The population figure looks modest by European standards, but the concentration of global technology and financial services companies in Dublin has created a consumer audience that is young, internationally mobile and commercially engaged in a way that few cities of comparable size can match. For ambitious brands, the Irish market offers reach that goes well beyond the numbers."

Ricardo Seixas, Founder and CEO, One Day Agency

Full-funnel Advertising Agency

What our clients are saying…

  • Codorníu Raventos - International Brand Manager Europe & Asia

    “About Nielsen data: It is once again very positive for us because while the category fell by 11.6% in value, and the cava category decreased by 5.6%, we are once again the green dot in the data, growing vs. the previous year's and increase of market share. These results are clearly related to the MKT campaigns during April and July. So, once again, thank you very much for your wonderful support. We are achieving great things in the UK thanks to these impactful marketing campaigns.”

  • Mark Hodson, VP of Marketing at UNiDAYS

    "Freshers is such a pivotal moment for UNiDAYS. As the UK's leading student platform, working with a tried and trusted team was key. We've found that in One Day. Their professionalism and unique approach to measuring effectiveness and incrementality is truly exceptional".

  • General Manager, Itchy Baby Co

    “We needed a digital agency that rocks the pants off it in the social & digital space that was fast, flexible, insightful and fun. Critical for us was someone that was responsive, really understood paid digital, and had the ability to make short, sharp, quick creative ads. One Day is that Agency. We are extremely excited to see what 2021 brings working with the talented team as we launch into the UK.”

  • Gurveer Chana, BigCommerce's Demand Generation Manager

    “It was an incredible experience partnering with IDA agency. We handed them a strict budget, and they met it and exceeded our expectations. Their professionalism, creativity, and unwavering support were instrumental in our campaign’s success. From designing ad t picking locations and strategies, the were with us every step of the way, and we couldn’t be happier with the results.”

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Billboard advertising in Ireland: Dublin, Cork, Galway, Limerick and the rest of Ireland.