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How big was the global climate strike? Here’s the best city-by-city estimate

  • Akshat Rathi
By Akshat Rathi

Senior reporter

Published Last updated This article is more than 2 years old.

On Sept. 20, the world likely saw its biggest single-day climate protest in history.

Organizers of the climate strikes estimate that some 4 million people turned up to 6,000 events held in more than 1,000 cities across 185 countries. Quartz attempted its own partial count of the protestors, relying on local sources, and was able to tally at least 1 million people in attendance.

Either figure would eclipse prior protests over climate change, including the People’s Climate March in 2014, which had an estimated 600,000 protestors and the school climate strikes in March this year, which had an estimated 1.4 million in attendance.

As my colleague Michael Coren describes the protests that occurred on Friday:

Organizers of the rallies said their goal is to secure a future for a generation that sees it slipping away. For millions, especially those in the path of extreme weather, global warming is quite literally a matter of life and death. For many others, it is also a matter of what kind of world they and their children will inherit.

Quartz has compiled information from multiple sources to create the most up-to-date crowd estimate. It’s worth noting that, while some of these estimates come from independent sources, most come from organizers themselves. Independent sources may provide different numbers for those rallies.

Below are the crowd sizes we found at climate strikes in 64 cities. You can find the source for each estimate in this spreadsheet.

New York
US
300,000
Berlin
Germany
270,000
London
UK
100,000
Melbourne
Australia
100,000
Sydney
Australia
90,000
Cologne
Germany
70,000
Hamburg
Germany
70,000
Munich
Germany
40,000
Mexico City
Mexico
35,000
São Paulo
Brazil
25,000
Hobart
Australia
22,000
Edinburgh
UK
20,000
Brussels
Belgium
15,000
Canberra
Australia
15,000
Brisbane
Australia
12,000
Stockholm
Sweden
10,000
Perth
Australia
10,000
Brighton
UK
10,000
Boston
US
10,000
Paris
France
9,400
Adelaide
Australia
8,000
San Francisco
US
8,000
Denver, CO
US
7,500
Amsterdam
Netherland
7,000
St. Paul, MN
US
6,000
Seoul
South Korea
4,000
Istanbul
Turkey
3,500
Islamabad
Pakistan
3,000
Belfast
Ireland
3,000
Birmingham
UK
3,000
Tokyo
Japan
2,800
Seattle
US
2,500
Cape Town
South Africa
2,000
Delhi
India
2,000
Portland, ME
US
2,000
Los Angeles
US
2,000
Singapore
Singapore
1,700
Bogota
Colombia
1,000
Karachi
Pakistan
500
Alice Springs
Australia
500
Syracuse, NY
US
500
Dakar
Senegal
200
Tblisi
Georgia
100
Jakarta
Indonesia
100
Hong Kong
Hong Kong
100
Bujumbura
Burundi
35
Lagos
Nigeria
30
Rio de Janeiro
Brazil
1,000s
Bangkok
Thailand
1,000s
Washington, DC
US
1,000s
Abuja
Nigeria
100s
Dhaka
Bangladesh
100s
Townsville
Australia
100s
Lahore
Pakistan
100s
Bangalore
India
100s
Hyderabad
India
100s
Johannesburg
South Africa
100s
Dar es Salaam
Tanzania
100s
Chennai
India
10s
Santiago
Chile
10s
Baghdad
Iraq
10s
Ankara
Turkey
10s
Yangon
Myanmar
10s
St Petersburg
Russia
10s
Kolkata
India
10s
Mumbai
India
10s

This story is part of Covering Climate Now, a global collaboration of more than 250 news outlets to strengthen coverage of the climate story.

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