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| | The American Community Survey and Intercensal Population Estimates |
 | | On the other hand, intercensal population estimates rely on the residence concept of the decennial census, where persons are required to have a de jure "usual residence." This is defined as the place they live and sleep most of the time or the place they consider to be their usual home. |
 | | Remember that county population estimates by age, sex, race, and Hispanic origin are developed with a ratio approach, calibrating the initial 1990 age, sex, race distribution of the county to updated count tabulations and state estimates derived with components of change for age, sex, race, and Hispanic origin. |
 | | The integration of the ACS and population estimate, operating from different methodologies, may suggest that instead of relying on the allocation procedure currently used in the ACS a "hotdecking" procedure similar to that used in the population estimates may be appropriate. |
| www.census.gov /population/www/documentation/twps0031/twps0031.html (9468 words) |
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