See Studies on Map

On the map below, click on a region to show a more detailed map (when available) or see a list of studies with locations in that region (when a detailed map is not available).

Region Name Number of Studies World 447,119 North America 179,491 United States 161,136 Alabama 10,987 Alaska 843 Arizona 13,655 Arkansas 5,979 California 42,234 Colorado 13,826 Connecticut 9,709 Delaware 2,248 District of Columbia 6,410 Florida 28,524 Georgia 16,136 Hawaii 2,190 Idaho 3,243 Illinois 20,726 Indiana 11,354 Iowa 6,019 Kansas 8,088 Kentucky 8,612 Louisiana 8,559 Maine 2,135 Maryland 20,885 Massachusetts 22,807 Michigan 16,610 Minnesota 14,532 Mississippi 3,638 Missouri 15,909 Montana 2,503 Nebraska 6,694 Nevada 5,431 New Hampshire 2,913 New Jersey 13,154 New Mexico 3,907 New York 33,503 North Carolina 22,050 North Dakota 2,224 Ohio 23,876 Oklahoma 7,408 Oregon 9,784 Pennsylvania 25,898 Rhode Island 4,388 South Carolina 10,781 South Dakota 2,466 Tennessee 15,839 Texas 34,298 Utah 8,870 Vermont 2,205 Virginia 13,210 Washington 14,443 West Virginia 2,494 Wisconsin 9,249 Wyoming 534

Tips: Click on a region name link to show a map of that region Click on a study count link to see a list of studies in that region. Use your browser's back button to return to this list and view studies in another region. Studies with no locations are not included in the study counts or on the maps. Studies with multiple locations are included in each region where the study has locations.