In my review of Joshua Katz’s book Speaking American, I mentioned that a new dialect survey was up. Much of the data in Katz’s book was drawn from an online dialect survey done by Bert Vaux and Scott Golder. Here’s Ben Zimmer giving credit where credit’s due.
Vaux is now conducting the Cambridge Online Survey of World Englishes with Marius L. Jøhndal. If you’re interested in world Englishes, head on over to that site, where you can also see the results without taking the survey.
Vaux also has a new survey of American English dialects available at https://www.dialectsofenglish.com/. The survey takes about 10 minutes, depending on how many questions you choose to answer and how long you spend looking at the heat maps it shows you. There are some very fun questions in there.