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.