California Breast Cancer Mapping Project

Study was posted on cehtp.org

Breast cancer is the most common cancer among women in California, with an average of 26,300 new cases diagnosed every year and 4,175 deaths from breast cancer occurring annually.

For the first time in California, maps identify areas with elevated rates of invasive breast cancer. The maps show four areas, two in the San Francisco Bay region and two in the Los Angeles-Orange County region, for which the age-adjusted incidence of invasive breast cancer appears to be 10-20% higher than for the rest of the state.

Irrespective of county boundaries,  elevated breast cancer risk in California based on census tracts was identified from years 2000 to 2008.  In general, white women were approx. 25% more likely to have breast cancer in these regions than their counterparts elsewhere in the state. Cancer among Hispanics and Asians tends to be lower than the state average.

SoCal
Thousand Oaks, Simi Valley Santa Clarita, Santa Monica, Beverly Hills, Granada Hills, Marina del Rey, Manhattan Beach, Hermosa Beach, Redondo Beach, Glendale, West Hollywood, Burbank, Studio City, Chatsworth, Calabasas, Camarillo

OC
Irvine, Mission Viejo, Laguna Beach, Dana Point San Clemente, Foothill Ranch, Coto de Caza, Lake Forest, Silverado, Newport Coast, San Juan Capistrano, Laguna Niguel, Aliso Viejo, Rancho Santa Margarita, Tustin, Anaheim Hills

South San Francisco Bay Area
Hayward, Union City, Fremont, Milpitas, San Jose, Campbell, Los Gatos, San Jose, Mountain View, Palo Alto, San Carlos, Cupertino, Sunnyvale, Saratoga, Woodside, Half Moon Bay, San Mateo, Burlingame, Redwood City

North San Francisco Bay Area
Oakland, Richmond, Concord, Napa, Mill Valley, Fairfield, Sausalito, Tiburon, San Rafael, Berkeley, Albany, Orinda, Walnut Creek, Lafayette, San Leandro, Danville, Martinez, Benicia, Hercules, Pinole, San Pablo, El Sobrante, Vallejo, American Canyon, Novato