With more people using smartphones year after year, the number of eyes on mobile ads is undoubtedly growing. For businesses, this translates to a potential increase in sales and revenue from investing in mobile advertising. 

But just how big is the mobile ad market size?

According to the latest data, mobile advertising spend in the US in 2021 is expected to reach $117.35 billion, surpassing $100 billion for the first time. This refers to expenditure on everything from classified ads and display ads to email, lead generation, and search on mobile devices such as smartphones and tablets. 

This will represent a whopping 22.15 percent year-over-year increase in mobile ad spend, which is the biggest mobile advertising growth between 2019 and 2024.

To put things in perspective, this is also more than double the mobile advertising growth from 2019 to 2020, during which expenditure grew by 10.05 percent. 

US mobile advertising spend is expected to continue increasing after—albeit at a slower rate. In 2022, the US mobile ad market size is projected to grow 16.86 percent to $137.13 billion. There will be a slight deceleration in the two years that follow, but expenditure is expected to eventually hit $174.14 billion in 2024. 

If it does continue to grow as experts forecast, this will mean that mobile ad spend will have doubled in the six years from 2019 to 2024.

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Drivers Behind US Mobile Advertising Growth

What’s driving the mobile advertising growth in the US? For starters, the large and growing number of internet users and mobile device owners. As many as 97 percent of US internet users today own mobile devices and 90.2 percent of them use these devices to access the internet.

That’s not all. On average, these mobile internet users spend over three hours every single day using the internet on their devices, and every minute they’re connected on their mobile devices is brand exposure and sales potential. 

If you’re thinking about investing in mobile ads or increasing your current spend, here are some US mobile advertising spend statistics to guide you:

  • 66.3 percent of US internet users use shopping apps on their mobile phones or tablets
  • 48.7 percent of them purchase products online with their mobile phones

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