Additional information on the mobility of the population is available in other 1960 Census reports. Statistics for the individual States, the urban and rural parts of each State, the metropolitan and non- metropolitan parts of each State, and each standard metropolitan statistical area (SMSA), urbanized area, urban place of 10,000 inhabitants or more, and county appear in chapter C of the individual State parts of 1960 Census of Population, Volume I, Characteristics of the Population. Statistics in greater detail for the State and for cities of 250,000 inhabitants or more appear in chapter D of the report. Summary data for the United States, regions, divisions, and cities and standard metropolitan statistical areas of 250,000 or more are shown in the United States Summary chapters of the report. Other Volume IX reports on this subject include Mobility for States and State Economic Areas-PC(2)-2B, which presents statistics on changes of residence between 1955 and 1960; Mobility for Metropolitan Areas-PC(2)-2C, which contains statistics on the movement of the population during the same period to and from SMSA's of 250,000 inhabitants or more and among their component parts; and Lifetime and Recent Migration--PC(2)-2D, in which the 1960 population of States is cross-classified by division of residence in 1955, which, in turn, is cross-classified by division of birth. These data are presented by age, color, and sex, and in an abridged form by years of school completed. Several other proposed Volume II reports which are devoted principally to subjects other than mobility call for one or more tables presenting cross- classification of the major subject by region of birth and region of residence of the population.

Data on State of birth of the native population have been collected and published in every decennial census beginning with that of 1850, but there were separate reports on this subject only in 1950 and 1940. The 1950 report was the first to show a cross-classification of State of birth by age.

Most of the 1960 data tabulated on the State of birth of the native population are presented in this report or other published reports. The statistics on the population by age of the type appearing in tables 30 to 34 have also been tabulated to provide a cross- classification of each State of 1960 residence with each State of birth. Because of space limitations, the statistics are shown for each State of birth by geographic division of 1960 residence. In addition, age in 5-year intervals was tabulated for that part of the resident population of each State born outside the State, by each State of birth. Similarly, the age data in 5-year intervals as shown for the standard metropolitan statistical areas in table 36 were also tabulated for central cities, the outlying ring by urban-rural residence, and the remainder of the State by urban-rural residence. This information is available on magnetic computer tapes. Information on the detailed contents of these tapes and their costs can be obtained by an inquiry addressed to the Chief, Population Division, Bureau of the Census, Washington 25, D.C. Inquiries concerning unpublished data should be transmitted to the Bureau as soon as possible, however, because tape files are not maintained indefinitely.