In 2006, Wikipedia co-founder Jimmy Wales said, "The Wikipedia community is very diverse, from liberal to conservative to libertarian and beyond. If averages mattered, and due to the nature of the wiki software (no voting) they almost certainly don't, I would say that the Wikipedia community is slightly more liberal than the U.S. population on average, because we are global and the international community of English speakers is slightly more liberal than the U.S. population.
There are no data or surveys to back that."[51] In 2007, Wales said that claims of liberal bias on Wikipedia "are not supported by the facts".[52]
In 2015, Wikipedia founder Jimmy Wales announced that the encyclopedia had failed to reach its goal to retain 25% female editorship.[53] Programs like edit-a-thons and Women in Red have been developed to encourage female editors and increase the coverage of women's topics.[54][55] A study in 2020 found that progress has been made: The study investigated contributions from "central" versus "peripheral contributors" and found that a balance between the two types of contributors results in the creation of content with the most neutral point of view.[56]
In 2021, Wikipedia denied accusations of having a particular political bias, with a spokesperson for the encyclopedia saying that third-party studies have shown that its editors come from a variety of ideological viewpoints and that "As more people engage in the editing process on Wikipedia, the more neutral articles tend to become".[57]