I did a screenshot and this is how mine looks. There are 1300+ members in California, but when I select City, it appears that most don’t list their specific location. I assume people do that for security reasons. Therefore, the search result is only 17. In this case, it is probably better to Sort by Last Active. However, once it finishes sorting, you may need to click Last Active again so that is sorts new to old. Looking at the Last Online times for some entries will show what the direction of the Sort was. I find 137 members in Iowa and 2 with the spelling of iowa, but only 8 with their City listed. Also, in the box next to the Search button you can enter the name of a specific city.
Know that these searches take a few moments, so once you tap Last Active, wait until it is done.