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Scientific Data Documentation
Postcensal Population Estimates, Demo-Detail 1990-1995DSN: CC36.CENSUS.POSTCEN.Y9095.DEMODETL DEMO-DETAIL: Estimates of Population Characteristics for Small Areas METHODOLOGY FOR COUNTY ESTIMATES BY AGE: 1990-1995 (July 1) The age-sex-race estimates for counties are based on the 1990 census counts, as modified by the Census Bureau in its MARS file. The estimates provide data for the White, Black, Indian, and Asian populations, by sex, for each single year of age from 0 to 85+. The race modification carried out by the Census Bureau in the MARS file assigned those persons who did not indicate a specific race on their form (approximately 9.8 million) to White, Black, Indian, or Asian. Most of these persons were of Hispanic origin, and were assigned chiefly to the White population. The Bureau also modified the age distributions, most notably for children under 5 years of age. Procedures 1. In order to obtain estimates of migration by race for each county for the period 1980-1990, the 1980 census figures were brought forward to 1990 with data on births, deaths, and a first estimate of migration (internal and international). By controlling these estimates to actual 1990 census totals, migration estimates by race for the decade consistent with both the 1980 and 1990 censuses were obtained. 2. Projections of births and deaths by race for 1990-1995 were prepared. The estimates were controlled to agree with the Census Bureau's national projections, middle series, in Current Population Reports, Series P-25, No. 1092. 3. Population projections by race to 1995 were prepared using the 1980-90 migration rates. The race data were then controlled to be consistent with the Bureau's 1995 estimates of the total population of each county, and with their 1995 national estimates by age, sex, and race released in March 1996. 4. The age and sex distribution in 1995 for each county was obtained using Demo-Detail's Alternative procedure as described in a professional paper "A Preliminary Comparison of Demo-Detail's County Estimates by Age and Sex with the 1990 Census", presented at the annual meeting of the Southern Demographic Association, October 1991, available on request. The 1995 estimates were adjusted in all detail to be consistent with the Bureau's 1995 national estimates by age, sex and race mentioned in paragraph 3. 5. The 1990 through 1994 age-sex-race estimates for each county were obtained by interpolation from the data for 1990 and 1995, controlled to agree with the Bureau's county estimates of total population and with their national estimates by age, sex and race. 6. An important new feature is an adjustment for change in military and prison populations. Administrative data for military bases were available through September 30, 1994, revealing major changes among the 183 counties where this group was significant. The estimates were adjusted accordingly. A similar adjustment was made for change in prison populations through 1993 for 349 counties, many with large new prisons. COUNTY ESTIMATES BY RACE, SEX, AND SINGLE YEAR OF AGE: 1990-1995 (July 1) (American Indian, (incl. Eskimo and Aleut), can be obtained by subtraction. TAPE RECORD FORMAT Character Item 1-2 State FIPS code 3-5 County FIPS code 6 -blank- 7-18 County Name *19-24 Total Male Age 0 7/1/90 25-30 Total Male Age 1 7/1/90 31-36 Total Male Age 2 7/1/90 37-42 Total Male Age 3 7/1/90 43-48 Total Male Age 4 7/1/90 - - - - - - - - 529-534 Total Male Age 85+ 7/1/90 535-1050 Total Female -repeat Age " 1051-1566 White Male " " 1567-2082 White Female " " 2083-2598 Black Male " " 2599-3114 Black Female " " 3115-3630 Asian Male " " 3631-4146 Asian Female " " 4147-8274 -repeat race-sex-age 7/1/91 8275-12402 -repeat race-sex-age 7/1/92 12403-16530 -repeat race-sex-age 7/1/93 16531-20658 -repeat race-sex-age 7/1/94 20659-24786 -repeat race-sex-age 7/1/95 * From character 19, all 4,128 data fields contain 6 characters. EXAMPLE: U. S. TOTALS (JULY 1, 1990) AGE M F WH. M WH. F BK. M BK. F AS. M AS. F 0 2039179 1946788 1624543 1542603 319908 313066 71199 68092 1 1942480 1853931 1543687 1466355 309472 302729 66574 62908 2 1899609 1811551 1515671 1438733 295646 288143 66103 63272 3 1871688 1786336 1502188 1426268 284805 278603 63108 60674 4 1892892 1804390 1522582 1443446 284772 278443 63751 61485 5 1883623 1795032 1518319 1439212 280214 273253 63490 61598 6 1822259 1738805 1470989 1396419 268130 261423 61985 60511 7 1862708 1778391 1503063 1426597 274189 268804 63722 61911 8 1793105 1711283 1446619 1373005 266240 260050 59999 58406 9 1884653 1792145 1515500 1432876 283296 276216 64019 61913 (JULY 1, 1995) AGE 0 1970031 1878339 1547576 1467445 314269 306522 86974 83458 1 1964572 1875859 1552602 1475168 306912 300439 84514 80261 2 1989569 1892249 1574925 1492181 310365 300253 83459 79636 3 2026325 1938888 1606028 1530881 313356 305225 85782 82000 4 2075180 1980813 1643450 1561656 324707 316463 85751 81863 5 2069301 1970332 1641812 1556785 324623 315860 78797 74549 6 1990732 1897328 1574779 1496017 317466 307402 74882 71085 7 1948813 1860434 1546844 1469823 304166 297387 74824 71168 8 1851087 1765019 1474709 1401183 284583 275929 70046 67020 9 1983288 1883422 1580467 1494782 303287 293264 75996 72828 Grand Total 7/1/95 262,755,096
