http://eire.census.gov/popest/archives/state/st_81asrh.php -- data & docs DOCUMENTATION Estimates of the Population of States by Age, Sex, Race, and Hispanic Origin: 1981 to 1989 These data are estimates of the population of the 50 States and the District of Columbia by 5-year age groups (age 0 to 4, 5 to 9, ....85 and over) sex (male, female), and modified race (White; Black; American Indian, Eskimo, and Aleut; Asian and Pacific Islander) and Hispanic Origin (Hispanic Origin, non-Hispanic Origin) for each year, July 1, 1981 through July 1, 1989. These data are consistent with the following recently released estimates: 1) revised estimates of the population of counties by age, sex, and race; 2) intercensal estimates of the population of states by age and sex; and 3) intercensal estimates of the population of the United States by age, sex, and race. The estimates included in this release are developed by interpolating the proportions of the population in specified race/ethnic categories developed from special census files for April 1, 1980 and 1990. The interpolated proportions are applied to the appropriate annual state totals of revised estimates of the population of counties by age, sex, and race. As a final step, the interpolated estimates are adjusted to be consistent with national intercensal estimates by specified race and ethnicity and the state intercensal estimates by age and sex. The age and race data in the 1980 and 1990 Census data files which were used as anchor points in this methodology were modified to be consistent with other data sets. The 1980 census data were further modified to be consistent with the 1990 definition of counties and the race modification procedures developed for 1990. The race classifications were modified in the 1980 and 1990 census files. The 1980 and 1990 census data included persons classified as "Other race". These people were not included in one of the specified racial categories listed on the census form. The existence of the "Other race" category is inconsistent with race categories defined by the Office of Management and Budget in OMB Directive 15. In order to serve the needs of the user community, it was necessary to assign each of these persons to a specified race. The age statistics for 1990 were modified to correspond with the April 1, 1990 census date. A review of the detailed 1990 census information indicted that respondents tended to provide their age as of the date of completion of the questionnaire, not their age as of April 1, 1990. In addition, there may have been a tendency for respondents to round up their age if they were close to having a birthday. The age data were modified to correspond to the April 1, 1990 date. The proportions by specified race developed from the special census files for 1980 and 1990 were interpolated to each July 1 date, 1981 through 1989. The interpolated proportions in each specified race/ethnic group were then applied to the appropriate state totals derived from the revised set of estimates of the population of counties by age, sex, and race; 1980 to 1989 (documentation enclosed). As a last step in the process, the interpolated estimates were adjusted to be consistent with revised intercensal estimates of the population of the nation by age, sex, and race; and the intercensal estimates of the population of states by age and sex. Separate data are shown on this computer diskette for each of the race/ethnic groups (White Hispanic, White non-Hispanic, Black Hispanic, Black non-Hispanic, American Indian, Eskimo, Aleut Hispanic, American Indian, Eskimo, Aleut non-Hispanic, Asian, Pacific Islander Hispanic, and Asian Pacific Islander non- Hispanic). However, the limitations of our methodology are such that we do not consider these data to be accurate for each individual cell. We include the separate data for your convience in aggregating to various groups. Although the data shown on this diskette are unrounded, we do not consister these data to be accurate to the last digit. Technical Contact: Sam Davis Population Division (301) 457-2441 OUTPUT DISKETTE DOCUMENTATION Estimates of the Population of States by Age, Sex, Race, and Hispanic Origin: 1981 to 1989 This diskette contains estimates of the population of the 50 States and the District of Columbia by 5-year age groups (ages 0 to 4, 5 to 9, ....85 and over), sex (male, female), modified race (White; Black; American Indian, Eskimo, Aleut), and Hispanic Origin (Hispanic Origin, non-Hispanic Origin) for each July 1 date, 1981 through 1989. 5 1/4" floppy diskette or 3 1/2" floppy diskette High Density Record Length 131 Characters Record Count 7,344 (16 records per year per State, 51 x 16 = 816 9 years of data 816 x 9 = 7,344 records) Record Layout: Contents Columns FIPS State Code 1-2 Year (Last digit, 1,2,...9) 3 Race/Hispanic Origin Code 4 1= White non-Hispanic 2= Black non-Hispanic 3= American Indian, Eskimo, Aleut, non-Hispanic 4= Asian, Pacific Islander non-Hispanic 5= White Hispanic 6= Black Hispanic 7= American Indian, Eskimo, Aleut, Hispanic 8= Asian, Pacific Islander Hispanic Sex 5 1= male 2= female Age 0-4 6-12 5-9 13-19 10-14 20-26 15-19 27-33 20-24 34-40 25-29 41-47 30-34 48-54 35-39 55-61 40-44 62-68 Record Layout Continued: 45-49 69-75 50-54 76-82 55-59 83-89 60-64 90-96 65-69 97-103 70-74 104-110 75-79 111-117 80-84 118-124 85+ 125-131