List of Radon Level by Country (Please send comments and corrections to: Jan_Zielinski@hc-sc.gc.ca)
Country Name WHO Code ISO Population 106 a AM GM GSD Max Classification of AMb Source OriginalReference for AM, possibly GM, GSD, Max
Canada 2090 CAN 32.27 28.35 11.2 3.9 1720 CWA JMZ Letourneau, E. G.; Krewski, D.; Zielinski, J. M., and McGregor, R. G. Cost effectiveness of radon mitigation in Canada. Radiation Protection Dosimetry. 1992; 45:593-598.;  and Letourneau, E. G.; McGregor, R. G., and Walker, W. B. Design and interpretation of large surveys for indoor exposure to radon daughters . Radiation Protection Dosimetry. 1984; 7(1):303-308.
Cuba 2150 CUB 11.27 7.7 5.2 3.3 15.3 CWA UNSCEAR 2004 survey Tomas Zerquera, J.; Prendes Alonso, M.; Fernandez Gomez, I. M.; Rodriguez Castro, G. V.; Martinez Ricardo, N.; Lopez Bejerano, G.; Ara do Lopez, J. O.; Acosta Rodriguez, N.; Carrazana Gonzalez, J.; Brigido Flores, O.; Hernandez Perez, A., and  Diaz Rizo, O. Studies on internal exposure doses received by the cuban population due to the intake of radionuclides from the environmental sources. Radiation Protection Dosimetry. 2006 Dec 1; 121(2):168-174.;  and  Tomas Zerquera, J.; Perez Sanchez, D.; Prendes Alonso, M. Brigido Flores O., and Hernández Pérez, A. Study on External Exposure Doses Received by the Cuban Population from Environmental Radiation Sources. Radiation Protection Dosimetry. 2001 May 1; 95(1):49-52.
Mexico 2310 MEX 107.03 140 90   1193   UNSCEAR 2006 survey Martinez, T.; Cabrera, L.; Oliveres, J. L., and Gonzalez, P. Radon and thoron levels in Mexico city dwellings.  Proceedings of the V Regional Congress on Radiation Protection and Safety.  Recife, Brazil. Brasil; 2001.; and Canoba, A.; López, F. O.; Arnaud, M. I.; Oliveira, A. A.; Neman, R. S.; Hadler, J. C.; Iunes, P. J.; Paulo, S. R.; Osorio, A. M.; Aparecido, R.; Rodríguez, C.; Moreno, V.; Vasquez, R.; Espinosa, G.; Golzarri; J. I. ; Martínez, T.; Navarrete, M.; Cabrera, I.; Segovia, N.; Peńa, P.; Taméz, E.; Pereyra, P.; López-; Herrera, M. E., and Sajo-Bohus, L. Indoor radon measurements in six Latin American countries. Geofisica Internacional. 2002; 41(4):453-457.
United States 2450 USA 298.21 46 25 3.1   CWA UNSCEAR 2000 report Marcinowski, F.; Lucas, R. M., and Yeager, W. M. National and regional distributions of airborne radon concentrations in U.S. homes. Health Physics. 1994 Jun; 66(6):699-706.; and United States Environmental Protection Agency. National residential radon survey. EPA 402/R-92-011.  1992
a Data are estimates for July 2005, taken from the United Nations World Populations Prospects Report (2004 revision).
 b CWA - Country Wide Average;  RA - Regional Average.