The recently concluded U.S. federal government shutdown impacted ACS data release timelines. Once the 2024 ACS 1-year PUMS data are available, IPUMS will process and release them as quickly as possible.
Codes and Frequencies
| 1919 | 1919 | 285 |
| 1920 | 1920 | 109 |
| 1921 | 1921 | 109 |
| 1922 | 1922 | 108 |
| 1923 | 1923 | 166 |
| 1924 | 1924 | 152 |
| 1925 | 1925 | 152 |
| 1926 | 1926 | 133 |
| 1927 | 1927 | 160 |
| 1928 | 1928 | 158 |
| 1929 | 1929 | 188 |
| 1930 | 1930 | 169 |
| 1931 | 1931 or 1932 | 176 |
| 1933 | 1933 or 1934 | 175 |
| 1935 | 1935 | 127 |
| 1936 | 1936 | 155 |
| 1937 | 1937 | 158 |
| 1938 | 1938 | 208 |
| 1939 | 1939 | 206 |
| 1940 | 1940 | 252 |
| 1941 | 1941 | 170 |
| 1942 | 1942 | 176 |
| 1943 | 1943 | 192 |
| 1944 | 1944 | 299 |
| 1945 | 1945 | 454 |
| 1946 | 1946 | 854 |
| 1947 | 1947 | 840 |
| 1948 | 1948 | 971 |
| 1949 | 1949 | 1,227 |
| 1950 | 1950 | 1,491 |
| 1951 | 1951 | 1,311 |
| 1952 | 1952 | 1,591 |
| 1953 | 1953 | 1,385 |
| 1954 | 1954 | 1,538 |
| 1955 | 1955 | 1,989 |
| 1956 | 1956 | 2,286 |
| 1957 | 1957 | 2,001 |
| 1958 | 1958 | 2,032 |
| 1959 | 1959 | 2,117 |
| 1960 | 1960 | 3,112 |
| 1961 | 1961 | 2,384 |
| 1962 | 1962 | 2,670 |
| 1963 | 1963 | 2,590 |
| 1964 | 1964 | 2,395 |
| 1965 | 1965 | 2,866 |
| 1966 | 1966 | 2,830 |
| 1967 | 1967 | 3,035 |
| 1968 | 1968 | 3,643 |
| 1969 | 1969 | 4,120 |
| 1970 | 1970 | 5,299 |
| 1971 | 1971 | 3,542 |
| 1972 | 1972 | 4,141 |
| 1973 | 1973 | 3,660 |
| 1974 | 1974 | 4,006 |
| 1975 | 1975 | 5,118 |
| 1976 | 1976 | 4,678 |
| 1977 | 1977 | 3,776 |
| 1978 | 1978 | 5,224 |
| 1979 | 1979 | 6,434 |
| 1980 | 1980 | 10,134 |
| 1981 | 1981 | 6,411 |
| 1982 | 1982 | 5,873 |
| 1983 | 1983 | 5,161 |
| 1984 | 1984 | 5,885 |
| 1985 | 1985 | 7,816 |
| 1986 | 1986 | 8,279 |
| 1987 | 1987 | 6,320 |
| 1988 | 1988 | 7,758 |
| 1989 | 1989 | 9,897 |
| 1990 | 1990 | 11,089 |
| 1991 | 1991 | 8,886 |
| 1992 | 1992 | 9,004 |
| 1993 | 1993 | 8,187 |
| 1994 | 1994 | 8,792 |
| 1995 | 1995 | 9,782 |
| 1996 | 1996 | 10,674 |
| 1997 | 1997 | 8,932 |
| 1998 | 1998 | 11,237 |
| 1999 | 1999 | 12,537 |
| 2000 | 2000 | 15,046 |
| 2001 | 2001 | 12,642 |
| 2002 | 2002 | 10,254 |
| 2003 | 2003 | 10,589 |
| 2004 | 2004 | 10,382 |
| 2005 | 2005 | 11,046 |
| 2006 | 2006 | 5,906 |
| BBBB | Born in the US | 2,619,429 |
Editing Procedure
There is no editing procedure available for this variable.
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