Table 6
Average Travel Time to Work – 1980 - 2000
1980 - 2000 Decennial Censuses
   
County     Commute Duration (One-Way, minutes)   Percent Change Percent Change
of Residence   1980 1990 2000 1990-2000 1980-2000
Alameda 24.6 25.8 30.8 19.4% 25.2%
Contra Costa 27.2 29.3 34.4 17.4% 26.5%
Marin 28.7 28.4 32.3 13.7% 12.5%
Napa 19.7 21.4 24.3 13.6% 23.4%
San Francisco 25.9 26.9 30.7 14.1% 18.5%
San Mateo 22.8 24.0 27.0 12.5% 18.4%
Santa Clara 22.8 23.3 26.1 12.0% 14.5%
Solano 22.2 28.2 31.8 12.8% 43.2%
Sonoma   22.7 24.1 26.8 11.2% 18.1%
Bay Area   24.3 25.6 29.4 14.8% 21.0%
Note: Mean travel times are for all means of transportation, combined,
   excluding workers working at home.