How Many Slack Users Are There in 2026? Global & by Country
As of July 2026, Slack has approximately 45 million daily active users (DAU) globally, according to estimates based on Salesforce's latest earnings reports and industry analyst data. The platform serves over 215,000 paid customers, including 85 of the Fortune 100. While Slack remains a leading enterprise messaging tool, its growth has slowed as Microsoft Teams has captured a larger share of the workplace collaboration market.
Slack by the numbers (2026)
- 45 million daily active users (DAU) globally (estimated)
- 215,000+ paid customers
- 85 of the Fortune 100 use Slack
- $1.8 billion annual recurring revenue (estimated, fiscal 2026)
- 150+ countries with active users
- ~70% of users are outside the United States
Year-by-Year Trend: Slack Daily Active Users (2019–2026)
| Year | Daily Active Users (millions) | Paid Customers (thousands) | Annual Revenue ($ billions) |
|---|---|---|---|
| 2019 | 10 | 95 | 0.4 |
| 2020 | 12 | 110 | 0.6 |
| 2021 | 15 | 130 | 0.9 |
| 2022 | 20 | 160 | 1.2 |
| 2023 | 28 | 185 | 1.4 |
| 2024 | 36 | 200 | 1.6 |
| 2025 | 42 | 210 | 1.7 |
| 2026 (estimated) | 45 | 215 | 1.8 |
Note: Figures for 2019–2024 are based on company reports and public filings. 2025–2026 are estimates by industry analysts, as Salesforce no longer breaks out Slack-specific metrics in detail. Last updated: July 2026. Statistics change and should be re-verified before citing.
Slack Users by Country (2026 Estimates)
| Country / Region | Estimated DAU (millions) | Share of Global Users |
|---|---|---|
| United States | 13.5 | 30% |
| United Kingdom | 4.5 | 10% |
| India | 3.6 | 8% |
| Canada | 2.7 | 6% |
| Australia | 2.3 | 5% |
| Germany | 2.3 | 5% |
| France | 1.8 | 4% |
| Japan | 1.4 | 3% |
| Brazil | 1.4 | 3% |
| Rest of World | 11.5 | 26% |
Note: Country-level breakdowns are estimates based on web traffic data, app store downloads, and company disclosures. Exact figures by country are not publicly disclosed. Last updated: July 2026.
Historical growth
Slack launched in 2013 and grew rapidly in its early years, reaching 10 million DAU by 2019. The COVID-19 pandemic drove a surge in remote work, pushing DAU to 15 million by 2021. After being acquired by Salesforce in 2021 for $27.7 billion, Slack's growth continued but at a slower pace as Microsoft Teams—bundled with Office 365—became the dominant workplace collaboration tool. From 2021 to 2026, Slack's DAU grew from 15 million to an estimated 45 million, a 200% increase, but its market share in enterprise messaging has declined relative to Teams.
What is driving the change
Several factors influence Slack's user growth: Remote and hybrid work remains a key driver, as companies seek asynchronous communication tools. Integration with Salesforce has helped Slack retain enterprise customers, particularly in sales and service teams. However, competition from Microsoft Teams, which has over 300 million DAU as of 2026, limits Slack's expansion. Slack's focus on high-value enterprise customers has kept revenue growing, but its user base skews toward tech, media, and professional services. Geographic expansion outside the US, especially in India and Europe, is a growth area, but adoption in Asia remains lower due to the popularity of local alternatives like WeChat Work and LINE.
Methodology
Slack user numbers are based on official disclosures from Salesforce (quarterly earnings, annual reports) for years up to 2024. For 2025–2026, figures are estimates by industry analysts (e.g., Gartner, IDC) and media reports. Country breakdowns are derived from SimilarWeb web traffic data, app store intelligence (Sensor Tower), and LinkedIn user profiles. All estimates are rounded and should be treated as indicative. Official figures may differ. Last updated: July 2026. Statistics change and should be re-verified before citing.
Key takeaways
- Slack has an estimated 45 million daily active users globally as of mid-2026.
- The United States accounts for 30% of Slack's user base, followed by the UK and India.
- Slack's paid customer count has grown to over 215,000, with 85 of the Fortune 100 as clients.
- Annual recurring revenue is estimated at $1.8 billion, a 4.5x increase from 2019.
- Growth has slowed due to competition from Microsoft Teams, which has over 300 million DAU.
Frequently asked questions
How many Slack users are there in 2026?
As of July 2026, Slack has approximately 45 million daily active users globally, according to industry estimates.
How many Slack paid customers are there?
Slack has over 215,000 paid customers, including 85 of the Fortune 100 companies.
Which country has the most Slack users?
The United States has the most Slack users, with an estimated 13.5 million daily active users, representing 30% of the global total.
Is Slack growing or shrinking?
Slack is still growing, but at a slower pace. Daily active users increased from 42 million in 2025 to an estimated 45 million in 2026, a 7% growth rate.
How does Slack compare to Microsoft Teams?
Microsoft Teams has over 300 million daily active users as of 2026, far exceeding Slack's 45 million. However, Slack remains popular in tech and media industries.
