The usual place of residence 5 years before the census (i.e., on April 1, 1975), was asked on a sample basis of persons 5 years old or over. If residence was not in "this house" in 1975, the location was recorded in terms of State, county, and city, or foreign country. The same rules for usual place of residence apply to 1975 as to 1980. Persons such as college students or military personnel were to report the actual residence rather than the legal residence, if different. Residence in 1975 is used in conjunction with residence in 1980 to determine the residential mobility of the population.
All persons 5 years old and over who did not move during the 5 years, plus persons who moved, but by 1980 had returned to their 1975 residence.
Different house in the United States
Persons who lived in the United States on April 1, 1975, in a different house from the one they occupied on April 1, 1980. This includes persons who lived in the same building, but a different apartment, or in the same mobile home but in a different location.
Persons who lived in a different house in the same county in 1975.
Persons who lived in a different county.
This population is frequently subdivided by region of 1975 residence.
Persons with residence in a foreign country, Puerto Rico or an outlying area of the United States in 1975, including Armed Forces stationed overseas.
Certain tabulations (for example, in Census Tracts reports) subdivide the different-house-in-the-United States category in a different way: central city of this SMSA, balance of this SMSA, and outside this SMSA.
Write-in responses were coded in census processing offices for a sample of approximately one-half of all long-form questionnaires (a cost-saving measure). For persons in the United States in 1975, census basic records specify the State, and county, and the city, town, or village (if residence was inside the incorporated limits). In the Northeast region, minor civil division of previous residence is also included on census basic records. For persons abroad in 1975, the basic records specify the country or outlying area. Public-use microdata A and "B" samples show residence in 1975 In the same terms as they show 1980 residence, that is, States, SMSA'S, selected places and county groups with 100,000 or more inhabitants. This makes possible the tabulation of a full origin-destination matrix of migration flows. The "C" sample shows residence in 1975 in terms of regions, divisions and selected States.
Subject reports are planned to cross-tabulate State of residence in 1975 with State of residence in 1980.
Certain tabulations present data on residence in 1975 separately for persons who were in the Armed Forces or in college in 1975 or 1980 so that their movements can be discounted in assessing migration trends.
The number of persons living in a different house in 1975 is less than the total number of changes in residence during the 5-year period. Some persons in the same house at the two dates had moved during the 5-year period but by the time of enumeration had returned to their 1975 residence. Other persons who were living in a different house had made two or more intermediate moves.
Since Residence In 1975 was coded for only a half sample of the long-form questionnaires, rather than the full sample, and cross-tabulation involving residence in 1975 (e.g., by age) will yield estimates which differ somewhat from figures derived from the full sample or the complete count. For example, the estimated number of persons 5 years old and over derivable from residence-in-1975 tabulations will not be exactly the same as found in other age tabulations.
Similar questions on residence 5 years earlier were asked in 1940, 1960, and 1970. The mobility question in 1950 applied to residence one year earlier. Prior to 1980, publications included the category Moved. Residence Not Reported. In 1980, allocations have been made for nonresponse.
See also: "Nativity And Place of Birth;" "Year Moved into Unit".