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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 339,574 100.00% 381,751 100.00%
Total Native Population 334,949 98.64% 373,471 97.83%
Born in US 331,329 97.57% 368,158 96.44%
Born in Same State 263,138 77.49% 278,540 72.96%
Born in Different State 68,191 20.08% 89,618 23.48%
Born Outside US 3,620 1.07% 5,313 1.39%
Total Foreign Born Population 4,625 1.36% 8,280 2.17%
Naturalized 2,925 0.86% 4,267 1.12%
Non-Naturalized 1,700 0.50% 4,013 1.05%

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

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