TikTok ads targeting: audiences, interests and lookalikes

Targeting is set in each ad group while you build a campaign. These are the dimensions TikTok lists:

• Choices within one dimension work as OR: Beauty or #makeup reaches people matching either.
• Choices across dimensions work as AND: Female and 25-44 reaches only people matching both.
• Location goes down to city, and to Designated Market Area in the US.

Source: TikTok Business Help Center: About ad targeting in TikTok Ads Manager, checked 15 October 2026

TikTok's own advice leans broad: set only the constraints you really need, such as your delivery area, and let its system find buyers. It calls an audience that can reach 80% or more of a country's users Fairly Broad, and says such audiences average 15% lower cost per action and 20% higher conversion rates than narrower ones.

Narrow targeting still makes sense when your product isn't suitable for some groups, or when you're retargeting people who already know you.

Sources: TikTok Business Help Center: About broad targeting, checked 15 October 2026; TikTok Business Help Center: About ad targeting in TikTok Ads Manager, checked 15 October 2026

A customer file audience matches your list of email addresses, phone numbers or mobile advertising IDs to TikTok users. TikTok's steps:

1. Go to TikTok Ads Manager and click the Tools tab.
2. Select Audience Manager.
3. Click Create Audience and choose Custom Audience.
4. Choose Customer File.
5. Upload your file.
6. Name the audience and click Confirm.

• File rules: CSV or TXT, under 1 GB, at least 1,000 entries, one ID per line, with a header row saying whether it holds email addresses, phone numbers or mobile advertising IDs.
• Unhashed values are hashed automatically, and TikTok deletes the uploaded file after matching.
• The audience takes 24 to 48 hours to generate.

Source: TikTok Business Help Center: How to create a Custom Audience with a customer file, checked 15 October 2026

For website visitors you need the TikTok Pixel installed with the events you want to use. TikTok's steps:

1. Go to the Audience section under Tools and click Create Audience.
2. Choose Custom Audience, then Website Traffic.
3. Under Include, choose the event, time period and Pixel.
4. Optionally add more rules, or exclude people.
5. Leave Auto-Refresh on, name the audience and click Confirm.

• For people who watched or engaged with your organic videos, choose Engagement instead. Link your TikTok account to Ads Manager or Business Center first.
• Organic video audiences can use 2-second or 6-second views, full views, or likes, shares and comments, over 7, 14 or 30 days, from up to 50 videos.
• One advertiser can have up to 400 custom audiences at a time.

Sources: TikTok Business Help Center: How to create a Website Traffic audience, checked 15 October 2026; TikTok Business Help Center: How to create engagement audiences, checked 15 October 2026

A lookalike audience uses a custom audience as its source and finds people similar to it. TikTok's steps:

1. In Audience Manager, click Create Audience and select Lookalike Audience.
2. Under Source, choose an existing custom audience.
3. Choose Omit to show ads only to the lookalike, or Contain to include the source audience too.
4. Choose Android, iOS or both, then a placement and location.
5. Choose an audience size: Narrow, Balanced or Broad.
6. Name the audience and click Confirm.

• The source audience needs at least 1,000 people.
• Narrow finds the most similar people. Broad reaches more people with moderate similarity.
• Lookalikes usually take 24 to 48 hours and show as unavailable until they're ready.

Sources: TikTok Business Help Center: How to create a Lookalike Audience, checked 15 October 2026; TikTok Business Help Center: About lookalike audiences, checked 15 October 2026

The limits that most often get in the way:

• Too small: custom audiences need at least 1,000 matched users to use in an ad group.
• Still building: new custom and lookalike audiences can take 24 to 48 hours.
• Saved audience limit: you can store up to 100 saved audiences.
• Unavailable settings: a saved audience won't save if it includes interests or hashtags that are no longer available.
• Objective conflict: some settings can't be applied to every campaign objective.
• Age-restricted products: some targeting isn't available when advertising to under-18s.

Sources: TikTok Business Help Center: About Custom Audiences, checked 15 October 2026; TikTok Business Help Center: How to create a Lookalike Audience, checked 15 October 2026; TikTok Business Help Center: How to create a Saved Audience, checked 15 October 2026; TikTok Business Help Center: About ad targeting in TikTok Ads Manager, checked 15 October 2026

Zolyp, which publishes this guide, is an AI social media manager: it plans, writes, designs and schedules posts for Instagram, Facebook, LinkedIn, Google Business, X, TikTok, YouTube, Pinterest, and Threads, and you approve the week before anything goes out. It doesn't target or run ads. It handles the organic side: regular posts that build the pool of viewers TikTok's engagement audiences can retarget later.