The Sydney Opera House lit in French tricolor after the November 2015 Paris attacks. In only a month and a half, this article received one of the highest edit totals of any article on the English Wikipedia in 2015. Photo by Ludopedia, freely licensed under CC BY-SA 3.0.
Each day, volunteer Wikipedia editors make thousands of edits to maintain and expand Wikipedia, the world’s free encyclopedia.
These unpaid contributors volunteer an enormous amount of time to bring the sum of all knowledge to the world, free of charge. While it would be extremely difficult to come up with a reasonable estimation of invested time, we can tell you these people created more than 2.5 million articles and made over 115 million edits in the last year alone.
In fact, the English-language Wikipedia actually reached its five-millionth article this year. Even individually, without counting any other language Wikipedia, it is authored by millions of volunteers from all over the world—from more than eight million logged-in accounts and an untold number of anonymous editors.
With all of this in mind, we wondered what articles received the most attention from Wikipedia editors in 2015. The Wikimedia Foundation’s Aaron Halfaker helpfully put together a list of the most-edited articles on the English-language Wikipedia in 2015, similar to a list he created last year.
Most of the list breaks down into three general categories. Topics like “Deaths in 2015” are perennial top-edited pages and will surprise few if anyone. Others reflect major current events, such as the two tragic terror attacks in Paris; this becomes much more prevalent as you move down the list. Last, articles like “Geospatial Summary of the High Peaks/Summits of the Juneau Icefield” are the work of one author making many thousands of edits.
In either case, they reflect the intense effort Wikipedians—the demonym for Wikipedia editors—put into unlocking the world’s knowledge.
- Deaths in 2015 (18,121)
- Geospatial Summary of the High Peaks/Summits of the Juneau Icefield (7,291)
- 2015 in sports (6,163)
- 2015 Pacific typhoon season (6,130)
- Charlie Hebdo shooting (5,202)
- Miss World 2015 (4,792)
- ATP World Tour records (4,764)
- November 2015 Paris attacks (4,675)
- Asia’s Next Top Model (cycle 3) (4,474)
- List of the works of Bastien and Henry Prigent (4,424)
- United States presidential election, 2016 (4,168)
- 2015 Pacific hurricane season (4,008)
- April 2015 Nepal earthquake (4,008)
- Islamic State of Iraq and the Levant (3,893)
- 2015 in Philippine television (3,717)
- The Voice (U.S. season 9) (3,605)
- 2015 in film (3,592)
- Jurassic World (3,561)
- 2015 in South Korean music (3,533)
- Pangako Sa ‘Yo (2015 TV series) (3,472)
For more on what happened in 2015, live a year in four minutes and see #Edit2015, our year-in-review video.
 These totals do not include December 2015, for which data was not available as of publishing time.
 Wikipedians chronicle the deaths by month, so the page now redirects to a so-called “list of lists of deaths.”
Ed Erhart, Editorial Associate