Thanks to social media and the tight-knit nature of LDS culture, the survey had a wide reach. Not surprisingly, the majority of participants came from the "Mormon Corridor"- Utah, Idaho and Arizona. However, almost every state in the United States was represented in the responses, with Texas and California having the most respondents after UT, ID and AZ.
Outside of the U.S., 44 countries were represented in the survey responses! Canada, Australia, the United Kingdom and Germany had the highest number of participants. Here's a list of every country that is represented in the garment survey:
The United Arab Emirates
The United States of America
I would assume that some of these responses came from missionaries serving abroad, but there are many members who live and work abroad. Either way, getting information from LDS women who live in extremely warm and humid climates is invaluable.