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Paid · Social Ads

Instagram Ads: Meta’s Growth Engine, and a Young Audience

Instagram is now more than half of Meta’s US ad revenue, a video-first platform where younger buyers discover brands. Half of US adults use it; 80% of under-30s do. We run Instagram to turn that attention into customers.

Instagram specialists

Stop the scroll. Earn the save. Sell the product.

Instagram rewards creative that earns attention in tenths of a second. We build the work and the targeting that converts the feed into revenue.

The honest answer first

Instagram is where Meta’s growth and its youngest, most engaged audience live. It’s become a video-first discovery platform, and for reaching buyers under 40 with visual, story-driven advertising, it’s essential.

The numbers tell the story: Instagram passed 3 billion users globally, half of US adults are on it, and it now generates more than half of Meta’s US ad revenue, a share that was a fraction of that a decade ago.

Reels and video are driving that growth, which changes how you advertise there. Here’s the data, and how we run Instagram to convert.

The scale

Half of US adults, three billion worldwide.

Instagram is no longer the upstart. It reached 3 billion monthly active users globally in late 2025, and 50% of US adults now use it, up from 40% in 2021. That’s mainstream reach with an engaged, visual audience.

For brands that sell on imagery, story, and discovery, that combination of scale and engagement is hard to beat.

Instagram reach

Mainstream scale, engaged audience

3Bmonthly active users worldwide
50%of US adults use Instagram
Source: Pew Research Center & Meta
It skews young

Where the under-40 audience is.

Instagram’s audience is young and reachable. 80% of US adults aged 18 to 29 use it, versus just 19% of those 65 and older. If your customer is under 40, this is one of the most reliable places to find them.

That demographic skew makes Instagram the natural complement to Facebook’s broader, older reach: between them, Meta covers nearly every age.

Instagram use by age, US adults

A distinctly young audience

80%18-29
64%30-49
19%65+
Instagram is where the under-30 audience concentrates.
Source: Pew Research Center
Meta’s growth engine

Instagram is now most of Meta’s US ad revenue.

Instagram has quietly become Meta’s growth engine. In 2025, it generated more than half of Meta’s US ad revenue (50.3%, about $32 billion) for the first time ever, up from just 7.7% a decade earlier.

That’s where Meta is investing and innovating, which means better ad products and formats for advertisers who are there. We make sure your spend rides that momentum.

Instagram’s share of Meta US ad revenue

From a fraction to the majority

50.3%of Meta US
Instagram (50.3%)Rest of Meta US (49.7%)
Up from 7.7% in 2015. Instagram is Meta’s growth engine now.
Source: eMarketer
It’s video-first now

Reels changed how Instagram advertising works.

Instagram is now a video platform. Users spend close to two-thirds of their time watching video, video time grew more than 30% year over year, and Reels alone is on a $50 billion-plus annual ad run rate.

That shift changes the creative playbook: short, native, attention-first video wins where static images used to. We build Instagram creative for how people use it now.

Instagram video momentum

A video-first platform

+30%YoY growth in video time spent
$50B+Reels annual ad run rate
Source: Meta (Q3 2025 earnings)
The bottom line

The place to reach younger buyers, visually.

Instagram is the visual, video-first, younger half of Meta, and Meta’s fastest-growing surface. For brands selling to buyers under 40 on the strength of how things look and feel, it’s essential, and it reaches more US adults than TikTok (50% versus 37%).

We run Instagram with native, video-first creative and Meta’s AI targeting, built to convert discovery into customers, not just collect impressions.

Reels has been a major driver of Instagram’s growth. Instagram is now a video-first platform.

Jasmine Enberg, Principal Analyst, eMarketer
The people who study this for a living

Reels has been a major driver of Instagram’s growth, as social media usage and advertising shift to video.

Jasmine Enberg, Principal Analyst, eMarketer

Instagram hit a major milestone with 3 billion monthly actives, and video time spent keeps growing.

Mark Zuckerberg, CEO, Meta
How we run it

We turn Instagram discovery into customers.

MoonSauce runs Instagram for how it works now: native, video-first creative built for Reels and the feed, Meta’s AI targeting, and optimization against your cost per result. It’s Meta’s growth engine and the home of the under-40 audience, and we make your spend ride that momentum into conversions.

Straight answers

Frequently asked

Who is Instagram advertising best for?
Brands reaching buyers under 40 with visual, story-driven, or video creative. 80% of US adults aged 18-29 use Instagram, and it reaches half of all US adults. It’s especially strong for products that sell on how they look and feel, and for discovery-driven demand generation.
Is Instagram or Facebook better for ads?
They’re complementary halves of Meta. Instagram skews younger and visual; Facebook skews broader and older. Running both through Meta’s ad system lets you cover nearly every age and let the platform optimize delivery. Instagram is now Meta’s growth engine, generating over half its US ad revenue.
Do Instagram ads need to be video?
Increasingly, yes. Users spend about two-thirds of their Instagram time on video, video time is growing 30% year over year, and Reels is on a $50 billion-plus ad run rate. Native, short, attention-first video tends to outperform static creative, so we build for video-first.
How big is Instagram’s audience?
Three billion monthly active users worldwide, with 50% of US adults on it, more than TikTok’s 37%. It’s mainstream reach with an engaged, younger, visual audience, which is why Meta has made it the center of its US ad growth.
How does MoonSauce run Instagram ads?
With native, video-first creative built for Reels and the feed, Meta’s AI-powered targeting, and constant optimization against your cost per result. We run Instagram and Facebook together where it strengthens the funnel, weighting toward the audience and format that fit your goals.
Receipts

Every figure on this page comes from a primary platform, an independent study, or a named industry expert. No competing-agency stats, no made-up numbers.

  1. Pew Research Center: Americans’ social media use 2025
  2. eMarketer: Instagram > half of Meta US ad revenue
  3. Meta Q3 2025 earnings call (3B MAU, Reels run rate)
  4. DataReportal: Digital 2026 United States
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