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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 225,339 100.00% 291,288 100.00%
Total Native Population 212,778 94.43% 264,009 90.64%
Born in US 209,586 93.01% 260,388 89.39%
Born in Same State 75,321 33.43% 89,610 30.76%
Born in Different State 134,265 59.58% 170,778 58.63%
Born Outside US 3,192 1.42% 3,621 1.24%
Total Foreign Born Population 12,561 5.57% 27,279 9.36%
Naturalized 4,987 2.21% 7,923 2.72%
Non-Naturalized 7,574 3.36% 19,356 6.64%

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

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