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La Paz County, Ariz. — located on the California border and home to the Colorado River Indian Reservation — has the country’s oldest population, according to U.S. Census Bureau county population estimates by age, sex, race and Hispanic origin released today. Webb County (Laredo), Texas — on the Mexican border in the southern part of the state — has the country’s youngest population, with children younger than 5 comprising 12.8 percent.
La Paz — with 32 percent of its population 65 or older on July 1, 2007 — led 24 counties with at least one-quarter of their populations 65 or older. Nine of these counties were in Florida, with four in Texas and three in Michigan.
Meanwhile, 302 counties, or nearly one in every 10, are “majority-minority” — meaning the county had a population with more than 50 percent minority residents.
Among the majority-minority counties with a minority population of 1 million or more were Bronx, N.Y.; Miami-Dade, Fla.; Los Angeles, Calif.; Queens, N.Y.; Bexar (San Antonio) and Dallas, Texas; San Bernardino, Calif.; Kings (Brooklyn), N.Y.; Harris (Houston), Texas; Santa Clara (San Jose) and Riverside, Calif.; Cook (Chicago), Ill.; and Orange, Calif.
Los Angeles County had the largest minority population in the country in 2007. At 7 million, or 71 percent of its total, Los Angeles County was home to one in every 14 of the nation’s minority residents. The county’s minority population was higher than the total population of all but 12 states.
Maricopa County, Ariz., gained 79,000 minority residents between 2006 and 2007, to lead the nation. Maricopa (Phoenix is its largest city) now has a minority population of 1.6 million, comprising 41 percent of its total. Its minority population ranks seventh nationally.
Based on total population, Starr County in south Texas had the highest proportion of minorities of all counties, at 98 percent. All but two of the top 10 counties in this category were along or near the Mexican border.
Unless otherwise specified, the data refer to the population who reported a race alone or in combination with one or more other races. The detailed tables show data for both this group and those who reported a single race only. Censuses and surveys permit respondents to select more than one race; consequently, people may be one race or a combination of races. Hispanics may be any race.
The federal government treats Hispanic origin and race as separate and distinct concepts. In surveys and censuses, separate questions are asked on Hispanic origin and race. The question on Hispanic origin asks respondents if they are Spanish, Hispanic or Latino. Starting with Census 2000, the question on race asked respondents to report the race or races they consider themselves to be. Thus, Hispanics may be of any race. (See U.S. Census Bureau Guidance on the Presentation and Comparison of Race and Hispanic Origin Data <http://www.census.gov/population/www/socdemo/compraceho.html>.)
These data are based on estimates of U.S. population for July 1, 2007. The Census Bureau estimates population change from the most recent decennial census (Census 2000) using annual data on births, deaths and international migration. More detailed information on the methodology used to produce these estimates can be found at <http://www.census.gov/popest/topics/methodology/2007-st-char-meth.html>.