How to Evaluate Your Influencer’s Audience

Finding that perfect influencer means understanding your target audience and finding creators who represent them. That means you’ll need an effective vetting process to ensure your demographics, mission, and values align. 

Each social media platform is developing more robust ways to track account and content performance. For now, many of those metrics are only available to the creator. But there are other ways to perform your own influencer audience analysis.

It’s not just important that you and your creator have a strong relationship. You also need to know that your influencer team maintains genuine relationships with the right audience members. With that insight, it’ll be easier to tell whether those brand-creator collaborations will have a real, long-lasting impact.

Why should brands do an influencer audience analysis?

Your influencer’s audience matters because your ultimate goal is to draw a positive response from their community. 

But more importantly, an influencer audience demographics analysis will reveal how deep the relationship runs between a creator and their followers. Many creators reach audiences that engage as many posts as possible, while others have followers who are somewhat apathetic about that creator’s content.

By understanding an influencer’s follower base, you can make better decisions about who you invite into your program. Furthermore, you’ll be able to anticipate campaign ROI based on the quality of a creator’s relationship with their followers.

Influence audience metrics to look for

To get a clear picture of a potential creator’s audience and the level of influence they have, consider these metrics.

Audience demographics 

Analyzing an influencer’s audience demographics will help you assess how well their audience aligns with yours. Here are some influencer audience demographics to help you narrow down your prospective creators:

If you use GRIN for creator discovery, you can describe your ideal influencer’s audience and engagement rates and get a Curated List of potential partners delivered straight to your email inbox.

Engagement

Partnering with influencers who have millions of followers doesn’t always mean you’ll reach an engaged audience that will buy your product. Large follower numbers can be misleading. Brands should also look at engagement to understand how often and meaningful a creator’s interactions are with their audience.

Engagement rate measures the percent of an influencer’s audience that interacts with their content through likes, shares, and comments. A high engagement rate can indicate a creator has an active, loyal audience that trusts them. 

Beyond the numbers, you can gauge engagement by reading comments. Robust creator-follower relationships typically manifest themselves in great conversations within post comments.

Conversations between followers signal the creator knows how to produce valuable user-generated content. Furthermore, influencers who take the time to reply to their followers’ comments greatly enhance follower trust.

Reachability

Reachability is the likelihood of an audience viewing a creator’s post. While algorithms can impact what content social media users see, many follow so many creators that they don’t see their content consistently. 

For example, users who follow 1,000 or more accounts are less likely to see or engage with your content than someone who follows 500 or fewer.

Popularity among other creators

Partnering with creators whose followers include celebrities, influencers, or other notable figures can be valuable. For one, it can signal that the creator has built a strong reputation and earned the trust of others in their niche.

It can also increase your brand’s reach and help you find new, influential brand ambassadors.

Authenticity

When it comes to influencer authenticity, there are two considerations:

While spotting and avoiding fake influencers is much easier than it used to be, there are still agencies that sell bot followers and engagements.

Usually, you can spot bot activity through followers who appear to have an inactive profile. Additionally, a high volume of shallow comments (emojis) demonstrates that a creator’s audience may not be legitimate.

But even among real influencers, some maintain a following among disinterested users or through means like influencer pods. These are quid-pro-quo arrangements where creators in a group agree to like and comment on one another’s posts to drive impressions and engagements. While this practice is “better” than paying for fake followers and engagements, it’s still misleading.
Unfortunately, there are a lot of methods where influencers appear to have followers that don’t actually exist. Screening prospective influencers will save you time and prevent you from signing a bad deal, and it only takes a few seconds.

To verify influencer authenticity, look for:

Non-organic growth patterns

Is an influencer an overnight success or a viral sensation?

A jump of 10k followers overnight can indicate they purchased followers. Some influencers follow accounts which will in turn follow them. The sneaky part, once they have received their “new follower” benefits, they go back and unfollow all of the accounts creating an inauthentic audience.

An exception: Viral content or some other notable event attracts followers.

Follower growth or decline

You can only learn so much from data that represents a “snapshot” in time. Take a look at their follower or engagement rate trends for the past 6 months. You might be surprised to find they are slowly on the decline. A drop in follower count and engagement rate might represent a larger issue. It could mean a loss in relevance or connection with their audience.

Analyzing influencer audience demographics 

It’s not uncommon to ask influencers to provide audience insights like gender, location, and age ranges before signing a deal. However, it can take a lot of back-and-forth to vet influencers, especially if you’re running creator partnerships at scale.

As a baseline, define your target audience (ages, gender, interest, etc.), and identify the platforms where they’re most active. Then, focus on creators on those channels.

Instagram influencer audience demographics

As of 2025, the largest group (28%) of Instagram users is 25-34. The second largest (26%) is 18-24 year olds.  TikTok influencer audience demographics



TikTok is most popular among users under 30. Over 55% of TikTok is younger than 30, but the age gap is closing as older users become more comfortable with the app.

TikTok also has more engagement features than most other channels, including reactions, comments, shares, Q&As, duets, and stitches.

YouTube influencer audience demographics

Because YouTube is more than a social network. According to Nielsen, YouTube now has higher TV viewership than Netflix, Amazon Prime, and other streaming services.  

As a result, YouTube’s audience demographics and behavior looks a bit different from TikTok and Instagram. 

For example, the age of YouTube users spans from the young to old. Instead of relying on general YouTube demographics, it’s more important to analyze each channel’s audience. 

In addition, YouTube is a video search engine much like its parent company, Google. Many users binge their favorite videos, and as such, video completion rates are essential engagement metrics to follow.

How to evaluate an influencer’s audience: a checklist

Choosing the right influencer often starts with analyzing audience demographics. However, you’ll need to dive deeper to find high-performing creators for your brand.

With this influencer audience analysis checklist, you can evaluate creator authenticity, engagement, and other qualities for strong partnerships.

1. Identify your target audience. 

Finding the right influencer starts with having a clear idea of your target audience.

Once you’ve established your ideal customer profile (ICP) or buyer personas, be sure to have them handy during your influencer search. They will include demographics like your audience’s interests, ages, locations, values, and other details that you’ll need to match with potential creators.

2. Select 1-3 social media channels.

You’re far more likely to get better campaign results when you identify 1-3 social channels where your audience is most active. It helps simplify your workflow, and makes it easier to find the perfect influencers

3. Set your campaign goals.

What you hope to accomplish in a campaign will also dictate which influencers you add to your shortlist. Some creators are better at driving brand awareness, while others are best at boosting sales or website traffic.

4. Pull a sample of followers and verify they are real accounts.

It’s unrealistic to check every single follower when doing audience analysis manually. Instead, pulla sample from a few recent posts. 

In this step, you’re mainly concerned about the followers’ legitimacy. If you notice that a few follows and engagements come from fake or inactive accounts, there’s a high probability that the influencer’s “influence” is manufactured.

5. Look for notable followers.

Followers who are also influencers are known as “notable followers.” Influencers with high-profile followers will tell you more about their interests and values since other influencers/celebrities are typically more open about their lives for the sake of their fans.

If you notice certain notable followers consistently reacting and commenting on one another’s posts, you may have uncovered activity originating from an influencer pod. If you suspect this to be the case, you should take a closer look to confirm the activity and consider that before recruiting any of those influencers.

6. Identify followers with 1,000+ follows.

Next, pull a sample of the creator’s followers and see how many accounts those individuals follow. If many follow 1,000 or more other accounts, then that means that the creator’s reachability is low. In other words, there’s a low probability that those followers see the creator’s posts in their feeds.

Fans that follow fewer than 500 accounts are most reachable, particularly on Instagram, TikTok, and Facebook.

7. Analyze influencer demographics and interests. 

From that same sample, try to identify the followers’ attributes, such as age, gender, interests, and values. Note how well these characteristics match your buyer personas.

8. See which brands their audience follows. 

Many followers are open about their favorite brands. They may indicate which brands they like by hashtag usage, post comments, or within the content on their own pages. 

9. Calculate influencer engagement rate. 

To find engagement rate, divide the creator’s total number of likes, comments, and shares by their follower count.

Engagement Rate = Total # of Post Engagements / # of Followers

You can also use one of the following formulas below, depending on your campaign goals and KPIs:

Engagement Rate = Views / Reach
Engagement Rate = Interactions / Views
Engagement Rate = # of Comments, Shares, etc. / Total Post Likes

Don’t feel like doing the math? Download GRIN’s free Web Extension to analyze creator profiles in seconds.

10. Examine post comments for authentic creator-follower connections.

Most high-performing influencers take extra effort to reply to follower comments and encourage ongoing user-generated content. If you consistently see vibrant, positive discussions within a creator’s post comments, you can feel good about the relationship between the creator and their audience.

11. Compare #sponsored to non-sponsored post performance.

Try to see how organically a creator can introduce brands and products into their content. By searching for sponsored posts, you can compare/contrast how readily that influencer’s fans accept the creator’s product endorsements.

Creators with low follower engagement on sponsored posts may not genuinely love the products that they promote, or struggle to introduce brands organically.

12. Record audience insights.

Once you’ve identified influencer prospects that match your target audience and campaign goals, record your insights. Evaluating an influencer’s audience is hard work. Keeping your insights in an influencer marketing software like Grin or a spreadsheet will help you stay organized and choose creators more easily.

If you’re using a spreadsheet, start with the following columns to help keep track of your audience information:

The list above is by no means exhaustive. As you perform your own audience analytics, add or remove tabs and columns to your database as necessary.

Key takeaway: An influencer’s relationship with their followers is the greatest indicator of campaign ROI.

Marketers can’t fake authenticity and trust. Individuals who place a premium on quality content and relationships earn these benefits. Just as you want to nurture genuine relationships within your creator team, your influencers must maintain quality connections with their audience members.

Performing an influencer audience analysis can help you confirm your influencer prospects are doing just that—curating an online community of engaged fans that will easily become loyal customers for your brand.

Frequently Asked Questions