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Table 4                
Workers by Means of Transportation to Work - 1980 - 2000
1980 - 2000 Decennial Censuses
         
County YearDrive    WorkTotal
of Residence % of TotalAloneCarpoolTransitWalkOtherat HomeWorkers
 
 1980311,32980,72263,32624,05917,2478,767505,450
  % of Total61.60%16.00%12.50%4.80%3.40%1.70%100.00%
1990422,77580,77363,13825,13616,48324,886633,191
Alameda % of Total66.80%12.80%10.00%4.00%2.60%3.90%100.00%
 2000450,49693,65272,17421,91916,72823,941678,910
 % of Total66.40%13.80%10.60%3.20%2.50%3.50%100.00%
 
 1980199,70753,16525,7946,8517,6035,634298,754
 % of Total66.80%17.80%8.60%2.30%2.50%1.90%100.00%
Contra1990286,75455,48831,3447,3716,56313,653401,173
Costa% of Total71.50%13.80%7.80%1.80%1.60%3.40%100.00%
 2000310,28659,76939,6526,6316,69418,976442,008
 % of Total70.20%13.50%9.00%1.50%1.50%4.30%100.00%
 
 198069,78319,34913,5004,2205,0223,814115,688
 % of Total60.30%16.70%11.70%3.60%4.30%3.30%100.00%
199082,71415,53512,8993,7392,0318,162125,080
Marin% of Total66.10%12.40%10.30%3.00%1.60%6.50%100.00%
 200082,89813,59712,7973,8352,39211,127126,646
 % of Total65.50%10.70%10.10%3.00%1.90%8.80%100.00%
 
 198028,6557,1867502,4841,5311,08441,690
 % of Total68.70%17.20%1.80%6.00%3.70%2.60%100.00%
199038,7666,6055702,6191,1211,89251,573
Napa% of Total75.20%12.80%1.10%5.10%2.20%3.70%100.00%
 200041,6988,5198032,3781,0802,91557,393
 % of Total72.70%14.80%1.40%4.10%1.90%5.10%100.00%
 
 1980113,72442,028129,68336,8236,8297,540336,627
 % of Total33.80%12.50%38.50%10.90%2.00%2.20%100.00%
San1990147,18743,925128,16037,61110,94714,479382,309
Francisco% of Total38.50%11.50%33.50%9.80%2.90%3.80%100.00%
 2000169,50845,152130,31139,19215,01419,376418,553
 % of Total40.50%10.80%31.10%9.40%3.60%4.60%100.00%
 
 1980210,55850,57724,1378,0937,5614,907305,833
 % of Total68.80%16.50%7.90%2.60%2.50%1.60%100.00%
San1990251,21845,10425,7888,8586,0599,532346,559
Mateo% of Total72.50%13.00%7.40%2.60%1.70%2.80%100.00%
 2000256,06645,36726,0297,6096,18012,845354,096
 % of Total72.30%12.80%7.40%2.10%1.70%3.60%100.00%
 
 1980470,652107,63920,11516,75724,10410,310649,577
 % of Total72.50%16.60%3.10%2.60%3.70%1.60%100.00%
Santa1990618,99598,16323,72716,50919,22519,986796,605
Clara% of Total77.70%12.30%3.00%2.10%2.40%2.50%100.00%
 2000641,113101,18829,11814,78616,85425,868828,927
 % of Total77.30%12.20%3.50%1.80%2.00%3.10%100.00%
 
 198065,65023,2321,8794,2983,5991,353100,011
 % of Total65.60%23.20%1.90%4.30%3.60%1.40%100.00%
1990114,23329,3203,6043,9163,4604,180158,713
Solano% of Total72.00%18.50%2.30%2.50%2.20%2.60%100.00%
 2000127,89630,9734,6622,7842,8155,441174,571
 % of Total73.30%17.70%2.70%1.60%1.60%3.10%100.00%
 
 198088,59120,8294,0935,4224,3914,358127,684
 % of Total69.40%16.30%3.20%4.20%3.40%3.40%100.00%
1990142,07424,7604,3516,2093,7219,316190,431
Sonoma% of Total74.60%13.00%2.30%3.30%2.00%4.90%100.00%
 2000168,13428,2835,5076,9293,84812,246224,947
 % of Total74.70%12.60%2.40%3.10%1.70%5.40%100.00%
 
 19801,558,649404,727283,277109,00777,88747,7672,481,314
 % of Total62.80%16.30%11.40%4.40%3.10%1.90%100.00%
Bay19902,104,716399,673293,581111,96869,610106,0863,085,634
Area% of Total68.20%13.00%9.50%3.60%2.30%3.40%100.00%
 20002,248,095426,500321,053106,06371,605132,7353,306,051
 % of Total68.00%12.90%9.70%3.20%2.20%4.00%100.00%
         
Sources: U.S. Bureau of the Census, Decennial Censuses - 1980, 1990, 2000
Summary Tape File 3A (1980-1990) and Demographic Profile 2, 3, 4 (2000)
 



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