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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 282,937 100.00% 322,895 100.00%
Total Native Population 263,522 93.14% 289,731 89.73%
Born in US 261,036 92.26% 286,761 88.81%
Born in Same State 173,277 61.24% 194,674 60.29%
Born in Different State 87,759 31.02% 92,087 28.52%
Born Outside US 2,486 0.88% 2,970 0.92%
Total Foreign Born Population 19,415 6.86% 33,164 10.27%
Naturalized 6,720 2.38% 10,713 3.32%
Non-Naturalized 12,695 4.49% 22,451 6.95%

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

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