Slack Statistics, User Counts and Facts (2021)



Here are a few of the most interesting Slack statistics and facts I was able to dig up including user counts. As always, be sure to check back in the future as I will be updating this post as new and updated stats become available.

Slack Facts

What is Slack?

Slack has transformed business communication. It’s the leading channel-based messaging platform, used by millions to align their teams, unify their systems, and drive their businesses forward. Only Slack offers a secure, enterprise-grade environment that can scale with the largest companies in the world. It is a new layer of the business technology stack where people can work together more effectively, connect all their other software tools and services, and find the information they need to do their best work. Slack is where work happens. (source)

Slack User Count

How many people use Slack?

12 million DAU

Last updated 3/18/20


Number of weekly active users:

9 million

Last updated 5/5/18


Slack Revenue Totals

Slack revenue (annual):


Slack net loss (annual):


Additional Slack Statistics

Number of messages sent weekly:

1 billion

Last updated 5/31/19


Number of paid accounts:

3 million

Last updated 5/22/18


Number of organizations that use Slack:

750,000 organizations

Last updated 6/4/20


Number of teams that use the free version:

550,000

Last updated 5/13/19


Number of daily active users when it launched in February 2014:

16,000 users


Number of paid teams:


Average amount of time users are active on weekdays:

90 minutes

Last updated 5/31/19


Percentage of the Fortune 100 that pay for Slack:

43%

Last updated 5/5/18


Number of times users have used workflows on them:

4 million times

Last updated 4/8/20


Average amount of hours users stay plugged into it on a weekday:

9 hours

Last updated 10/1/19


Number of developers that use the API weekly:

200,000

Last updated 5/22/18


Percentage of daily users that are from outside the US:

more than half

Last updated 5/31/19


Number of employees:

1,664 employees

Last updated 4/30/19


Amount of funding raised to date:

$1.268 million

Last updated 8/21/18


Slack’s reported valuation:

$7.1 billion

Last updated 8/21/18


Amount of time that users spend on it weekly:

50 million hours

Last updated 5/31/19


Number of apps in the app directory:

2,000 apps

Last updated 3/16/20


Number of Enterprise Grid customers:

150

Last updated 1/31/18


Number of countries that Slack has users in:

150

Last updated 5/31/18


Percentage of users that say it improves their communication and collaboration inside their organization:

87%

Last updated 5/31/19


Slack paid customer counts (annual):

  • Year ended January 31, 2020: 110,000
  • Year ended January 31, 2019: 88,000
  • Year ended January 31, 2018: 59,000
  • Year ended January 31, 2017: 37,000

Number of monthly messages sent:

1.5 billion
Last updated 2/24/16


Top city (globally) for usage:

San Francisco

Last updated 2/12/15


Number of apps that have been developed:

4,000 apps

Last updated 12/15/15


Top country for usage:

United States

Last updated 2/12/15


Top city (outside of U.S) for usage:

Tokyo

Last updated 2/12/16


Retention rate for paid users:

98%

Last updated 4/16/15


Number of people in Tokyo that use Slack:

330,000

Last updated 9/12/17


Number of people in London that use Slack:

196,000

Last updated 9/12/17


Number of people in Berlin that use Slack:

82,000

Last updated 9/12/17


Number of people in New York City that use Slack:

420,000

Last updated 9/12/17


Weekly active users growth rate:

3-5%

Last updated 1/19/15


Total number of hours users collectively spend on it monthly:

100 million hours

Last updated 2/12/15


Maximum number of users logged in at the same time:

1 million

Last updated 10/27/15


Most configured integration

Google Drive

Last updated 2/12/15


Number of integrations to date:

900,000

Last updated 6/24/15


Percentage of users that say it improves transparency and culture in the office:

80.4%

Last updated 7/14/15


Average reduction in office email that users see:

48.6% reduction

Last updated 7/14/15


Average reduction in office meetings that users see:

25.1% reduction

Last updated 7/14/15


Average increase in team productivity that users see:

32% increase

Last updated 7/14/15


Percentage of users that say it makes finding information easier for them:

62.4%

Last updated 7/14/15


Percentage of users that say it improves team culture:

79%

Last updated 7/14/15


Percentage of managers that are women:

43%

Last updated 2/3/16


Percentage of employees that are women:

42.9%
Last updated 2/3/16


Average number of monthly app installs from the app Directory:

415,000 installs

Last updated 10/20/16


Number of third-party app installs to date:

8.8 million

Last updated 9/12/17


Percentage of customers that use integrations:

90%

Last updated 9/27/16


Number of offices:

7 offices
Last updated 10/20/16


Average number of times a Google Drive file is imported each weekday:

60,000 times

Last updated 12/7/16


Number of bots in the App Directory:

900 bots
Last updated 2/7/17


Percentage of paid teams that are actively using at least one app:

90%

Last updated 4/11/17


Reported amount Amazon was willing to pay for Slack in June 2016:

$9 billion


Number of users in Tokyo:

280,000 Daily Active Users

Last updated 7/19/18


Number of Slack users in Japan:

500,000 Daily Active Users

Last updated 7/19/18


Number of paid subscribers in Japan:

155,000

Last updated 7/19/18


Please note that some of these numbers are easier to find than others. A few of these Slack stats come from their own reports, but some are based on news reports and not official company tallies. No information contained on DMR should be relied upon to make investment decisions. Basically, this is the best I can find and I don’t guarantee anything to be 100%.