14 Slack Statistics In 2024 (Users, Organizations & Revenue)

In the year 2014, Slack was listed as a Unicorn startup. Later, it gained further popularity during the COVID-19 pandemic, and its revenue crossed 902.6 million.

Salesforce quickly noticed its potential and acquired the company at $27.7 billion in 2020 to expand its software suite and enterprise applications. 

I have compiled the latest facts and figures related to Slack, its users, usage, revenue, valuation, and more to provide further updates about Slack. 

Slack Statistics 2024: At A Glance

  • Slack has 54.1 million monthly active users, this number is set to reach 65 million in 2024.
  • The platform currently has 32.3 million daily active users, this number is set to reach 38.8 million in 2024.
  • Slack generated a revenue of $902.6 million in 2020 and is estimated to generate $4.22 billion by 2025.
  • More than 750,000 organizations use Slack.
  • 77% of the Fortune 100 companies use Slack. 
  • Slack has 200,000 paid users.
  • Slack’s valuation reached $26.5 billion in 2023. 
  • Slack has a market share of 18% in the business communications software market.
  • Teams that use Slack are 47% more productive. 
  • More than 2,545 employees work at Slack. 

About Slack

Launch Date.14 August 2013
Founder.Stewart Butterfield (co-founder, CEO), Cal Henderson (co-founder, CTO)
HeadquartersSan Francisco, California
Parent CompanySalesforce
Daily active users(estimated)32.3 million (Estimates)
Monthly active users (estimated)54.1 million (Estimates)
Paid Consumers200,000
Revenue generated$902.6 million
Valuation$27.7 billion
Number of Employees 2,545 

How Many People Use Slack?

The number of people using Slack has grown tremendously over the past years. The huge growth in this number was recorded during the pandemic, which led to the app’s growth. Let’s take a look at the number of people worldwide who use Slack. 

Slack has 32.3 million daily active users.

Meanwhile, the number of daily active users in 2019 was reported to be $8.7 million.

Slack is estimated to have 38.8 million and 47.2 million daily active users by 2024 and 2025, respectively. 

These estimates are based on the daily active users recorded over the past years. 

Daily Active Users Of Slack Recorded Over The Years

The following table displays the daily active users of Slack recorded over the years.

YearDaily active users of Slack 
2025*47.2 million
2024*38.8 million
202332.3 million
202225.7 million
202119.2 million
202012.6 million
20198.7 million

Source: Statista.

The monthly active users of Slack are predicted to be 54.1 million. 

Comparatively, the number of monthly active Slack users worldwide in 2019 was reported to be 14.6 million. 

The rise in monthly users of Slack is due to the rapid adoption of collaborative spaces that allow employees to connect and help teams collaborate on projects. 

Further, according to the projections made by Statista, the monthly active users of Slack are estimated to reach 79 million by the end of 2025. 

Number Of Monthly Active Slack Users

The following table displays the number of monthly active Slack users. 

YearMonthly active users of Slack
2025*79 million
2024*65 million
202354.1 million
202243.1 million
202132.2 million
202021 million
201914.6 million

Source: Statista. 

Slack Revenue 

Slack’s revenue doubled between 2017 and 2018. Later, it grew exponentially over the years. Let’s take a look at the revenue generated by Slack over the years. 

Slack generated annual revenue of $5,967 million in 2023. 

In the 1st quarter of 2021, Slack generated a revenue of $273.4 million. This was a 36% year-over-year increase in revenue.

Slack’s peak revenue was recorded in 2020. At this time, most of the companies were working remotely, which led to an increased usage of collaborative software. 

Further, according to the latest earning report released by Salesforce, Slack contributed 12% to the total salesforce revenue generated in the 2nd quarter of 2023. 

Slack’s Revenue Over The Years

Here is a table showing slack’s revenue over the years:

Fiscal YearRevenue Generated By Slack
2023*$5,967 million
2022*$4,509 million
2021*$3,324 million
2020$902.6 million
2019$630.4 million
2018$400.6 million
2017$221 million
2016$200 million
2015$100 million
2014$30 million
2013$12 million

*Note: After Salesforce acquired Slack, slack’s revenue is included in Salesforce’s “Platform and Other” segment. The slack revenue for the years 2021 to 2023 is actually the revenue of the salesforce “platform and others”

Source: Business of Apps, Salesforce, Statista

Slack Organizations

The number of organizations using Slack increased tremendously over the past years which led to the decline in its user count. Here are further details about the number of Organizations that use Slack.

Over 750,000 organizations use Slack. 

200% year-over-year growth is recorded in the number of organizations using Slack. 

According to the latest report released by Slack, the platform is used by over 100K organizations. 

The report further adds that nearly 80% of the Fortune 100 companies use Slack. 

Some of the large companies that use Slack are IBM, Amazon, Airbnb, and PayPal

However, the majority of 750,000 organizations are unpaid Slack customers.

Number Of Organizations That Have Used Slack Over The Past Years

The following table displays the number of organizations that have used Slack over the past years. 

YearNumber Of Organizations Using Slack
2020750,000
2019640,000
2018450,000
2017330,000
2016200,000
201560,000
201430,000

Source: Statista, Slack

Slack has 200,000 paid customers.

This is an increase of  39% year-over-year growth in the number of paid users compared to the previous year. 

The number of paying customers of Slack jumped from 112,000 to 156,000 between 2020 and 2021. 

This increase in the number was due to the widespread adoption of remote work worldwide. As a result, large enterprises were prompted to purchase the paid version to access the platform’s premium features. 

However, after the changes in the scenario, most of the paying consumers did not back off as they noticed smoothness in their communication and other tasks. 

Here are further details about the number of paying consumers of Slack over the years. 

YearPaying Customers
2023200,000
2022169,000
2021156,000
2020112,000
201988,000
201860,000
201750,000

Source: Business of Apps, Slack, LinkedIn

Slack Usage Statistics

Slack is usually used for productivity and communicating with team members. Let’s take a look at some of the facts and figures related to the slacks usage.

Users spend over 90 minutes actively working on Slack each day. 

On average, 5 billion actions like sending messages, commenting on documents, building custom apps, etc, are completed weekly on Slack. 

More than 1 billion of these actions take place on mobile devices. 

Besides, every weekday, Slack crosses one billion usage minutes. 

Slack users spend approximately 9 hours signed in on Slack on weekdays. 

Source: Slack.

More than 1.5 billion messages are sent daily on Slack. 

87% of Slack users reported that conversations on Slack improved the quality of communication in their organization. 

Besides, 74% of Slack users send messages through public channels. 

With the help of Slack, enterprises witnessed a 13% increase in the number of arranged contracts. According to Slack, using the app reduced emails by 32% and meetings by 27%. 

Additionally, Slack reduced the support tickets by 2,500 per week. More than 3,800 queries per week are handled smoothly by the Slack API integrations. 

Teams that use Slack are 47% more productive.

515 organizations reported that after adopting the usage of Sack, their team’s productivity has increased by 40% to 20%. 

However, 144 organizations said that they saw no increase in the productivity of their team member after adopting the usage of Slack.

Besides, the companies using Slack can bring their products to the market 23% faster than others. 

The following table displays the number of organizations that reported an increase in their productivity percentage after adapting to the usage of Slack. 

Percentage Increase In ProductivityNumber Of Organizations
More than 100%33
100% to 80%58
80% to 60%129
60% to 40%292
40% to 20%515
20% to 10%458
No increase in productivity144

Source: Statista, Slack

79% of the organizations reported that using Slack improved the culture of their team. 

On the other hand, 10.6% of the organizations reported that they did not see any improvement in their team culture. 

91% of the users reported that their ability to work remotely improved after adapting to Slack.

Effect Of Slack On The Team Culture Of The Organizations

The following table displays the effect of Slack on the team culture of the organizations. 

Effect On Team CulturePercentage Of Organizations
Improved team culture79%
No difference in the team culture10.6%
Don’t know if it affected the team culture10.4%

Slack Valuation (2023)

Slack Valuation increased tremendously between 2018 and 2019. Today, the app is valued at over $26 billion. Here are further details about the Slack Valuation recorded.

Slack is valued at $26.5 billion as of 2023. 

The Slack valuation peaked in 2019 and reached $23 billion. However, later in 2020, Slack’s valuation dropped to $17 billion in the beginning of 2020. 

Some reasons for this drop could be increased competition amid the pandemic, slowed revenue growth rate, and the work-from-home trend. 

Further, in December 2020, Salesforce acquired Slack for $27.7 billion.

Slack's Valuation Over The Past Years

The following table displays Slack’s valuation over the past years. 

YearValuation Of Slack
2023$26.5 billion
2020$27.7 billion
2019$23 billion
2018$7.1 billion
2017$5 billion
2016$3.8 billion
2015$2.8 billion
2014$1.1 billion

Sources: Business of Apps, Techcrunch, Companies Market Cap

Market Share Of Slack

Slack has a market share of 18% as of 2023. 

The app has become quite popular over the past years since the pandemic spread. 

Nearly 1 in 5 people prefer Slack for Collaborations and Communications. 

Microsoft Teams and Skype for Business are reported to be Slack’s biggest competitors. 

Here are further details about the market share owned by different Business Communication Software worldwide:

Collaborative SoftwareMarket Share
Skype for Business53%
Microsoft Teams41%
Slack18%
Google Chat12%
Workplace from Meta1%

Source: Businessdit

Slack vs Microsoft Teams

Microsoft Teams and Microsoft SharePoint are Slack’s top competitors. They offer services similar to that of Slack. 

However, Teams provides users with additional features of web conferencing and online meetings. 

Let us look at the differences between Microsoft Teams and Slack. 

ParametersMicrosoft Teams Slack
Monthly Active Users320 million54.1 million
Market Share 5.57%17.49%
Revenue Over $8 billion$273.4 million

The following table displays the number of Daily active users of Slack and Microsoft Teams over the past years. 

YearThe Number Of Daily Active Users Of MicrosoftNumber Of Daily Active Users Of Slack
2023280 million20 million
2022270 million18 million
2021145 million14 million
202075 million12 million
201920 million10 million
20188 million8 million
20172 million6 million

Source: Companies Market Cap.

General Slack Statistics

Over 2,545 employees work at Slack. 

In the year 2009, Slack employed around 1,664 people. Later, Slack stated that they had 2,045 staff in 2020. 

The majority of its employees work at the Slack headquarters in California. Slack has 11 offices in 7 countries worldwide, besides its headquarters in America. 

It operates in New York City, Denver, Toronto, London, Paris, Tokyo, Dublin, Vancouver, Pune, and Melbourne.

Source: Slack, Wikipedia.

Slack is available in more than 150 countries. 

The application is available in 12 languages. Some of them are English, Spanish, French, Italian, Japanese, Korean, etc. 

Source: Wikipedia, Slack. 

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