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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 307,647 100.00% 341,367 100.00%
Total Native Population 285,574 92.83% 312,657 91.59%
Born in US 278,346 90.48% 304,240 89.12%
Born in Same State 215,435 70.03% 242,377 71.00%
Born in Different State 62,911 20.45% 61,863 18.12%
Born Outside US 7,228 2.35% 8,417 2.47%
Total Foreign Born Population 22,073 7.17% 28,710 8.41%
Naturalized 12,785 4.16% 13,889 4.07%
Non-Naturalized 9,288 3.02% 14,821 4.34%

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

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