The Effective Altruism Survey is an annual survey of the effective altruism community.
The first survey took place in 2014, as a project of Rethink Charity. Currently, the survey is conducted by Rethink Priorities, which also publishes detailed analyses of the survey data.
Effective Altruism Survey. Official website.
Data (EA community) | Effective Altruism Group Organisers' Survey | surveys