Region
United States
277
Alaska
4
California
3
Maryland
3
European Union countries
2
Gaithersburg
2
Iowa
2
North America
2
Northridge (Los Angeles)
2
America
1
Canada
1
Charleston
1
China
1
Colorado
1
Cook Inlet
1
Europe
1
Fort Collins
1
Japan
1
Korea (South)
1
Latin America
1
Loma Prieta
1
Los Angeles Metropolitan Area
1
Los Angeles Region
1
Oklahoma
1
Russia
1
San Francisco Bay Area
1
South Carolina
1
Washington (D.C.)
1