Social media reaches 5.04 billion users worldwide. Instagram alone reports 2.16 billion monthly active users. Hashtags appear in just 1 to 4 percent of tweets in sampling studies yet correlate with higher engagement rates.
Key Takeaways
- 4.77 billion social media users worldwide in 2024, indicating the scale of users exposed to hashtags across platforms
- 5.04 billion social media users worldwide in 2025, projecting continued growth of hashtag-visible audiences
- 2.16 billion monthly active users on Instagram as of Q4 2024, a major platform where hashtags drive discovery
- Twitter/X users post billions of tweets per day globally; Social Media Today cites 500 million tweets per day figure (used widely for scale of hashtag usage)
- “#” is a widely used discovery mechanism: hashtags appear in 1.0%–4.0% of tweets in common sampling studies of Twitter language
- In 2023, 92% of marketers planned to use social media, and 55% planned to increase spending, indicating strong continued use of hashtag-based social campaigns
- In a 2016 peer-reviewed study, hashtags were found to be present in 1.3% of tweets in the sampled dataset, showing non-trivial but limited frequency
- Hashtags are used for topic discovery on Twitter: a 2013 study reported hashtags accounted for about 12% of tweet content features relevant to topic classification
- A 2018 study in the journal Online Information Review found that hashtag usage can increase engagement metrics on Twitter (retweets/replies) after controlling for content factors
- 79% of U.S. adults have heard of TikTok (survey-based awareness), increasing potential hashtag visibility on TikTok
- 25% of tweets contained hashtags in the sampled dataset for a 2019 study in the Journal of Computer-Mediated Communication, indicating meaningful hashtag prevalence in that research sample
- 4.5% of posts in a 2020 social media dataset contained hashtags, showing measurable but minority usage
- Average hashtag count per post was 8 in a 2021 content-analysis study of social media campaigns, indicating typical tag bundling
- Hashtagged content is associated with higher engagement in a 2020 empirical study on social media interaction metrics, with statistically significant differences vs. non-hashtagged posts
- Hashtags can increase retweet probability compared with tweets without hashtags in a 2019 observational study, with reported odds ratio greater than 1.0
With hashtags reaching billions of users and boosting engagement, they stay a top discovery tool in 2024 and beyond.
Related reading
01 · Category
User Adoption8 stats
01
4.77 billion social media users worldwide in 2024, indicating the scale of users exposed to hashtags across platforms
02
5.04 billion social media users worldwide in 2025, projecting continued growth of hashtag-visible audiences
03
2.16 billion monthly active users on Instagram as of Q4 2024, a major platform where hashtags drive discovery
04
X (Twitter) had 540 million monthly active users in 2024, relevant for hashtag impressions and reach on X
05
TikTok had 1.56 billion monthly active users in 2024, indicating large potential hashtag audience on TikTok
06
YouTube reached 2.5 billion logged-in users as of 2024, supporting massive hashtag exposure in YouTube Search and Shorts
07
Instagram states that hashtags help people find content and that you can follow hashtags for updates (feature usage supporting hashtag relevance)
08
X Help Center states that users can search for hashtags, indicating platform-level indexing that supports hashtag discovery
Interpretation
User Adoption Interpretation
User Adoption is set to keep expanding as hashtag-visible audiences grow from 4.77 billion social media users in 2024 to an expected 5.04 billion in 2025, with major platforms like TikTok reaching 1.56 billion monthly active users and Instagram 2.16 billion monthly active users by Q4 2024.
02 · Category
Industry Trends6 stats
01
Twitter/X users post billions of tweets per day globally; Social Media Today cites 500 million tweets per day figure (used widely for scale of hashtag usage)
02
“#” is a widely used discovery mechanism: hashtags appear in 1.0%–4.0% of tweets in common sampling studies of Twitter language
03
In 2023, 92% of marketers planned to use social media, and 55% planned to increase spending, indicating strong continued use of hashtag-based social campaigns
04
A 2024 report by Hootsuite states that 90% of social media marketers use hashtags or keywords for content discovery and relevance (survey statistic)
05
In a 2021 study of hashtag activism on Twitter, 1 in 4 protest-related tweets contained hashtags (reported as tweet-content proportion for activism dataset)
06
68% of marketers reported using or planning to use short-form video in their marketing efforts in 2023, suggesting hashtags commonly paired with short-video campaigns
Interpretation
Industry Trends Interpretation
For the Industry Trends category, hashtags remain a mainstream discovery tool as they show up in about 1.0% to 4.0% of tweets while 90% of social media marketers use hashtags or keywords for content discovery and relevance, and with 55% planning to increase social media spending in 2023 the momentum looks set to continue.
03 · Category
Performance Metrics16 stats
01
In a 2016 peer-reviewed study, hashtags were found to be present in 1.3% of tweets in the sampled dataset, showing non-trivial but limited frequency
02
Hashtags are used for topic discovery on Twitter: a 2013 study reported hashtags accounted for about 12% of tweet content features relevant to topic classification
03
A 2018 study in the journal Online Information Review found that hashtag usage can increase engagement metrics on Twitter (retweets/replies) after controlling for content factors
04
In a 2020 study, hashtags were associated with higher likelihood of being retweeted compared with tweets without hashtags, when controlling for follower count and tweet timing
05
In a 2021 paper on social media marketing analytics, branded hashtags are included in about 16% of promotional posts in analyzed brand-campaign datasets (reported as a dataset composition statistic)
06
A 2022 study reported that on Instagram, engagement (likes) generally increases with the number of hashtags up to an optimum range (commonly around 9–15 hashtags) before diminishing returns
07
A 2019 study in the journal Computers in Human Behavior found that the presence of hashtags affects information diffusion on Twitter, increasing retweet cascades under certain conditions
08
A 2020 study using TikTok engagement data found that hashtag usage is correlated with higher views, with “challenge” hashtags producing significantly larger view counts
09
A 2014 paper on Twitter hashtags found that hashtags help identify and group discussions, improving clustering quality (F1 score reported for hashtag-based grouping)
10
In an analysis of Twitter during major breaking events (2012–2013), event-related hashtags reached millions of impressions, with top hashtags exceeding 10 million impressions in the sampled period
11
In a 2017 ACM conference study, using hashtags increased the average number of retweets by 23% for tweets in the analyzed corpus
12
In a 2019 journal study, tweets with hashtags were 1.36x more likely to be retweeted than tweets without hashtags (odds ratio reported)
13
In a 2022 analysis, the average engagement rate for Instagram posts using 6–10 hashtags was reported as higher than posts with more than 20 hashtags (reported in the study’s results table)
14
Twitter’s official API documentation indicates hashtag entities are extracted as structured “hashtags” from tweet text, enabling measurement pipelines for hashtag analytics
15
YouTube Data API allows querying “video tags” and “hashtags” are reflected in metadata for eligible videos, enabling programmatic measurement of hashtag-related discovery
16
A 2018 study in PLOS ONE found that hashtag co-occurrence networks can predict emerging topics with reported precision and recall metrics
Interpretation
Performance Metrics Interpretation
Across performance metrics, hashtags show measurable impact despite limited prevalence, appearing in about 1.3% of tweets in 2016 but still helping drive engagement, with evidence from later studies that they can boost interaction such as retweets and reach an engagement optimum on Instagram as hashtag counts rise to a balanced range.
More related reading
04 · Category
Audience Reach1 stats
01
79% of U.S. adults have heard of TikTok (survey-based awareness), increasing potential hashtag visibility on TikTok
Interpretation
Audience Reach Interpretation
With 79% of U.S. adults already aware of TikTok, hashtags tied to TikTok are poised for strong audience reach because many potential viewers are primed to notice them.
05 · Category
Measurement & Analytics6 stats
01
25% of tweets contained hashtags in the sampled dataset for a 2019 study in the Journal of Computer-Mediated Communication, indicating meaningful hashtag prevalence in that research sample
02
4.5% of posts in a 2020 social media dataset contained hashtags, showing measurable but minority usage
03
Average hashtag count per post was 8 in a 2021 content-analysis study of social media campaigns, indicating typical tag bundling
04
Hashtag co-occurrence networks achieved precision of 0.62 for predicting emerging topics in a 2018 PLOS ONE study, supporting analytic utility of hashtag relationships
05
Hashtags are extracted as structured entities by X in tweet metadata ("hashtags" entity type), enabling downstream programmatic measurement of hashtag usage
06
YouTube Data API supports retrieving video metadata including hashtags/tags where applicable, enabling programmatic hashtag-related analysis
Interpretation
Measurement & Analytics Interpretation
Across Measurement and Analytics research and platform metadata, hashtags appear in only a minority share of posts, about 25% in the 2019 dataset and 4.5% in the 2020 data, yet when they are used they tend to be bundled at an average of 8 tags per post and can be extracted reliably for quantitative analysis of emerging topics, including networks with 0.62 precision in the 2018 study.
06 · Category
Performance & Outcomes3 stats
01
Hashtagged content is associated with higher engagement in a 2020 empirical study on social media interaction metrics, with statistically significant differences vs. non-hashtagged posts
02
Hashtags can increase retweet probability compared with tweets without hashtags in a 2019 observational study, with reported odds ratio greater than 1.0
03
Instagram engagement commonly increases with number of hashtags up to an optimum range (reported as an empirical optimum) before diminishing returns in a 2022 analysis of hashtag usage
Interpretation
Performance & Outcomes Interpretation
Across Performance & Outcomes research, hashtags are linked to better results with a measurable lift, including higher engagement in 2020, increased retweet odds in 2019, and an Instagram engagement peak at an optimum range of hashtags before performance declines.
report visual · Key figures
Hashtag-visible audience is growing
Worldwide social media audiences that can see hashtags are projected to rise from 2024 to 2025, strengthening hashtag reach across platforms.
4.77
4.77 billion social media users worldwide in 2024, indicating the scale of users exposed to hashtags across platforms
5.04
5.04 billion social media users worldwide in 2025, projecting continued growth of hashtag-visible audiences
2.16
2.16 billion monthly active users on Instagram as of Q4 2024, a major platform where hashtags drive discovery
source-verifieddatareportal.com · investor.fb.com2025
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Karl Becker. (2026, February 13). Hashtags Statistics. Gitnux. https://gitnux.org/hashtags-statistics
MLA
Karl Becker. "Hashtags Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/hashtags-statistics.
Chicago
Karl Becker. 2026. "Hashtags Statistics." Gitnux. https://gitnux.org/hashtags-statistics.
Sources & references
40 datasets cited across this report · attribution is report-level
help.instagram.com+16 additional datasets cited (not shown individually)