The object of this quiz is to click on the circle containing the largest population. When you begin you'll be shown 2 circles on the map with radii between 10 and 250 miles which do not intersect. Click on the one with the larger population within it (based on US census tract info) then 'Submit' - if you are correct you'll move on. One incorrect round and the quiz is over. Every 5 rounds the number of circles on the map will increase by 1. Try to build the longest streak of correct circles. Circles displayed will always be non-intersecting.
NOTE: You may have to zoom out to see all circles, occasionally a AK/HI circle will be included. Also, only population within the US is included in the total, any Canada/Mexico coverage counts as 0 population within the circle.
1. This is out of date, in that many forests have been merged (e.g. Coeur d’Alene, Kaniksu, and St. Joe into Idaho Panhandle)
2. Some forests don’t seem to fill in when completed (Sawtooth, Caribou, Targhee, Bridger, Teton, Kaibab, Coconino, Apache, Sitgreaves, Manti La Sal)
current list has been updated – i think the shapefile i used is weird so they all may not fill in perfectly, however they should tally with the current 2021 forests.