SPECIAL REPORT
Population Growth in Silicon Valley, May 2015
Table 3: Median Age of Mothers at the Time of Giving Birth in Santa Clara & San Mateo Counties, San Francisco, the Rest of the Bay Area, California, and the United States, 2008 and 2013 | ||||
|---|---|---|---|---|
| 2008 | 2013 | |||
| First Birth | All Births | First Birth | All Births | |
| Silicon Valley | 28 | 30 | 30 | 32 |
| San Francisco | 31 | 32 | 32 | 34 |
| Rest of the Bay Area | 27 (range of 23-31 among the counties) | 29 (range of 23-31 among the counties) | 28 (range of 25-32 among the counties) | 32 (range of 29-34 among the counties) |
| California | 25 | 28 | 26 | 30 |
| United States | 24 | 27 | 25 | 29 |
Data Source:
Analysis:
Silicon Valley Institute for Regional Studies
Data is from the U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Vital Statistics System. Silicon Valley data includes Santa Clara & San Mateo Counties. Rest of the Bay Area includes the entire 9-county Bay Area excluding San Francisco, San Mateo and Santa Clara Counties. The median age calculation excludes births by mothers ages 50-54 and mothers ages 10-12. The California data for mothers ages 17 and 18 was unavailable for 2013. 2013 data were unavailable for Santa Clara County mothers ages 13, 14, and 48, San Mateo County mothers ages 13, 14, 15, 47, 48 and 49, and San Francisco mothers ages 47, 48 and 49. 2008 data were unavailable for San Mateo County, San Francisco, Contra Costa County, Marin County, and Solano County mothers age 13, and Napa County mothers age 14. Some data were also missing for several Rest of Bay Area counties in the low (13-18) and high (43+) age ranges in 2013, and in the range of 46-49 in 2008.
This chart does not have any footnotes.
There is no additional data for this table.
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