1980
|
1990
|
2000
|
% Change | |
| Alameda | 0.682
|
0.767
|
0.889
|
30.3% |
| Contra Costa | 0.502
|
0.603
|
0.757
|
50.8% |
| Marin | 0.284
|
0.374
|
0.485
|
70.8% |
| Napa | 0.315
|
0.399
|
0.534
|
69.5% |
| San Francisco | 0.760
|
0.780
|
0.818
|
7.6% |
| San Mateo | 0.572
|
0.676
|
0.775
|
35.4% |
| Santa Clara | 0.555
|
0.678
|
0.786
|
41.6% |
| Solano | 0.604
|
0.703
|
0.844
|
39.7% |
| Sonoma | 0.284
|
0.363
|
0.504
|
77.4% |
| TOTAL BAY AREA | 0.605
|
0.694
|
0.809
|
33.7% |
The racial/ethnic diversity index ranges from a low of 0.0 (entire population is of one racial/ethnic group) to a high of 1.0 (population in equally distributed between all racial/ethnic groups.)
This particular diversity index is based on five racial/ethnic categories:
- White only, non-hispanic;
- Black/African American only, non-hispanic;
- Asian or Hawaiian/Pacific Islander only, non-hispanic;
- Hispanic/Latino, any race;
- American Indian/Alaskan Native or Other Race or Two-or-More Race, non-hispanic.
Notes: Data is from the U.S. decennial censuses, 1980 to 2000. Data analysis by staff of the Metropolitan Transportation Commission.
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Updated October 1, 2003