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The Population Estimates Program produces for counties each year: total population estimates and estimates by age, sex, race and Hispanic origin. The release of total population estimates in the spring also includes demographic components of change. A second release in the summer presents estimates by age, sex, race, and Hispanic origin. All estimates are for the resident population unless noted otherwise. The reference date for county estimates is July 1.
See changes to county, incorporated place, and county subdivision geography since 1990. The following states have had legal county boundary changes since 1990: Alaska, Maryland, Montana, and Virginia.
See Population Estimate Changes for Counties in 2001 as brought about through the Challenge Process
The 1999 county population estimates by age, sex, race, and Hispanic or Latino origin were the most recent estimates available during the 2001 vintage estimates series. Please refer to the county section of the 1990ís archive page.