POPULATION PROJECTIONS OF THE UNITED STATES BY AGE, SEX, RACE, HISPANIC ORIGIN, AND NATIVITY: 1999 TO 2100 Source: Population Projections Program, Population Division, U.S. Census Bureau, Washington, D.C. 20233 (301) 763-2436 Internet Release Date: January 13, 2000 I. DATA FILE DESCRIPTION (NP-D5) Projected Components of Change of the United States Resident Population by Age, Sex, Race, and Hispanic Origin: Lowest, Middle, and Highest Series, 1999 to 2100 (NP-D5-C) and (NP-D5-D) NET MIGRATION TO THE UNITED STATES The files contain the projected net migration to the United States for each calendar year between 1999 and 2100. Data are presented for the United States resident population and the foreign-born population by single year of age, sex, race, and Hispanic origin. Files are available for the middle, lowest, and highest series and are only accessible on the World Wide Web. There are no corresponding electronic products. II. UNIVERSE DESCRIPTION The projections are produced for the resident population of the United States which includes people who reside in the 50 states and the District of Columbia. They exclude residents of the Commonwealth of Puerto Rico, and residents of the outlying areas under United States sovereignty or jurisdiction (principally American Samoa, Guam, Virgin Islands of the United States, and the Commonwealth of the Northern Mariana Islands). The definition of residence conforms to the criteria used in the 1990 census, which defines a resident of a specified area as a person "usually resident" in that area. The projections exclude the United States Armed Forces Overseas, as well as civilian United States citizens whose usual place of residence is outside the United States. The foreign-born population is designated by the absence of United States citizenship at birth and includes naturalized citizens and non-citizens residing in the United States. Consequently, a person is considered "native" if he or she is born in the United States or is born abroad to at least one parent with U.S. citizenship. III. TECHNICAL DESCRIPTION (NP-D5-C) U.S. Resident Net Migration to the United States (NP-D5-D) Foreign-born Net Migration to the United States FILE TYPE: ASCII FILE SIZE: File Name* Number of Records Columns Variables Bytes PMIGDET.A 4,532,880 103,020 42 8 PMIGDET.B 4,532,880 103,020 42 8 PMIGDET.C 4,532,880 103,020 42 8 FMIGDET.A 4,532,880 103,020 42 8 FMIGDET.B 4,532,880 103,020 42 8 FMIGDET.C 4,532,880 103,020 42 8 SORT SEQUENCE: The records are first sorted by series, followed by race, year, and age. Age is listed in single year intervals in ascending order. * The extension represents the series: A=middle B=lowest C=highest. IV. EXPLANATION OF DATA FIELDS Series: The extension for each file name describes the series. The letter "A" represents middle series data; "B," the lowest series; and "C," the highest series. Year: For calendar years 1999 to 2100. Age: Each age code represents a single year of age, except for "100," which lists the population counts for people 100 years of age and over (centenarians). Race and Hispanic The data are shown for the Total; White; Black; American Origin: Indian, Eskimo, and Aleut; and Asian and Pacific Islander populations. Data are also shown for the Hispanic origin population, and the non-Hispanic White; non-Hispanic Black; non-Hispanic American Indian, Eskimo, and Aleut; and non-Hispanic Asian and Pacific Islander populations. Persons of Hispanic origin may be of any race. A = Total population B = White population C = Black population D = American Indian, Eskimo, and Aleut population E = Asian and Pacific Islander population F = Hispanic origin population G = non-Hispanic White H = non-Hispanic Black I = non-Hispanic American Indian, Eskimo, and Aleut population J = non-Hispanic Asian and Pacific Islander population V. RECORD LAYOUT Net Migration for the United States Files: File Name File Description PMIGDET.A Projected net migration for the US resident population from 1999 to 2100, middle series PMIGDET.B Projected net migration for the US resident population from 1999 to 2100, lowest series PMIGDET.C Projected net migration for the US resident population from 1999 to 2100, highest series FMIGDET.A Projected net migration for the US foreign-born population from 1999 to 2100, middle series FMIGDET.B Projected net migration for the US foreign-born population from 1999 to 2100, lowest series FMIGDET.C Projected net migration for the US foreign-born population from 1999 to 2100, highest series Location Length Type Data 1 1 Character Series (A, B, or C) 2 1 Character Race 3-5 3 Character Identification (MIG) 6-9 4 Numeric Year (four digits) 10-12 3 Numeric Age (years) 13-22 10 Numeric Total population net migration to the US 23-32 10 Numeric Total male population net migration to the US 33-42 10 Numeric Total female population net migration to the US VI. RACE AND ETHNIC DEFINITIONS AND CONCEPTS The racial classification used by the Census Bureau generally adheres to the guidelines in Federal Statistical Directive No. 15, issued by the Office of Management and Budget, which provides standards on race and Hispanic origin categories for statistical reporting to be used by all Federal agencies. The race and Hispanic origin categories are defined as follows: American Indian, Eskimo, and Aleut: A person having origins in any of the original peoples of North America, who maintains cultural identification through tribal affiliation or community recognition. Asian and Pacific Islander: A person having origins in any of the original peoples of the Far East, Southeast Asian, the Indian subcontinent, or the Pacific Islands. This area includes, for example, China, India, Japan, Korea, the Philippine Islands, and Samoa. Black: A person having origins in any of the black racial groups of Africa. Hispanic: A person of Mexican, Puerto Rican, Cuban, Central or South American or other Spanish culture or origin, regardless of race. White: A person having origins in any of the original peoples of Europe, North Africa, or the Middle East. VII. ASSUMPTIONS AND METHODOLOGY The population projections are created using the cohort-component model. For a detailed description of the model, the assumptions, and the data used to create these projections, see the working paper, "Methodology and Assumptions for the Population Projections of the United States: 1999 to 2100, Working Paper #38." This paper can be obtained at the national projections internet site on the World Wide Web or by contacting the Statistical Information Staff by telephone at (301) 763-2422, or by e-mail at POP@CENSUS.GOV (please include telephone number).