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Contra Costa County, California - Wikipedia, the free encyclopedia |
 | | Contra Costa County was one of the original counties of California, created in 1850 at the time of statehood. |
 | | It is bounded on the south and west by Alameda County, on the northwest San Francisco Bay, on the North by San Pablo Bay and Suisun Bays, and on the east by the San_Joaquin_River. |
 | | In the county the population is spread out with 26.50% under the age of 18, 7.70% from 18 to 24, 30.60% from 25 to 44, 23.90% from 45 to 64, and 11.30% who are 65 years of age or older. |
| en.wikipedia.org /wiki/Contra_Costa_County,_California (3208 words) |
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