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San Mateo County

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The Census includes all residents of the United States, regardless of their citizenship status. In some areas of the country, those without American citizenship account for a substantial proportion of the population, while in many areas, particularly in the Midwest, the make up only a small percentage of residents. Likewise, in some areas the majority of the population has come from other states within the U.S. while in others, particularly in the South, the population is more stable over time.

Nativity and Citizenship Status, 1990-2000
1990 2000
Number Percent Number Percent
Total Population 649,623 100.00% 707,161 100.00%
Total Native Population 484,856 74.64% 479,043 67.74%
Born in US 475,763 73.24% 469,593 66.41%
Born in Same State 309,553 47.65% 333,361 47.14%
Born in Different State 166,210 25.59% 136,232 19.26%
Born Outside US 9,093 1.40% 9,450 1.34%
Total Foreign Born Population 164,767 25.36% 228,118 32.26%
Naturalized 69,896 10.76% 111,735 15.80%
Non-Naturalized 94,871 14.60% 116,383 16.46%

Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).

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