Table
1
IPUMS
File Characteristics
| |
|
|
Release Dates:
|
|
Number of Records
in Thousands: |
| Filename |
IPUMS Sample name |
Original Sample Name |
Principle Investigators |
IPUMS Version |
Original Version |
Sample Density
|
H
|
P
|
| ip18501 |
1850 Sample |
|
Menard/Ruggles |
1995
|
1994
|
1 in 100
|
37
|
198
|
| ip18601 |
1860 Sample |
Preliminary Version 1 |
Ruggles |
1997
|
1997
|
1 in 500
|
TBA
|
TBA
|
| ip18701 |
1870 Sample |
Preliminary Version 1 |
Ruggles |
1997
|
1997
|
1 in 500
|
TBA
|
TBA
|
| ip18801 |
1880 Sample |
|
Ruggles/Menard |
1995
|
1994
|
1 in 100
|
107
|
503
|
| ip19001 |
1900 Sample |
|
Preston |
1993
|
1980
|
1 in 760
|
27
|
100
|
| ip19101 |
1910 Sample |
|
Preston |
1993
|
1989
|
1 in 250
|
89
|
366
|
| ip19102 |
1910 Black Oversample |
|
Morgan/Ewbank |
1998
|
1990
|
varies
|
5
|
24
|
| ip19103 |
1910 Hispanic Oversample |
|
Gutmann/Ruggles |
1998
|
1996
|
varies
|
~18
|
~90
|
| ip19201 |
1920 Sample |
Preliminary Version 2 |
Ruggles/Menard |
1997
|
1997
|
1 in 200
|
129
|
521
|
| ip19401 |
1940 Sample |
|
Winsborough et al. |
1993
|
1984
|
1 in 100
|
391
|
1351
|
| ip19501 |
1950 Sample |
|
Winsborough et al. |
1993
|
1984
|
1 in 100
|
461
|
1922
|
| ip19601 |
1960 Sample |
|
Census Bureau |
1993
|
1971
|
1 in 100
|
579
|
1780
|
| ip19701 |
1970 Form 1 State Sample |
5% State Sample |
Census Bureau |
1993
|
1972
|
1 in 100
|
744
|
2030
|
| ip19702 |
1970 Form 2 State Sample |
15% State Sample |
Census Bureau |
1995
|
1972
|
1 in 100
|
744
|
2030
|
| ip19703 |
1970 Form 1 Metro Sample |
5% County Group Sample |
Census Bureau |
1995
|
1972
|
1 in 100
|
744
|
2030
|
| ip19704 |
1970 Form 2 Metro Sample |
15% County Group Sample |
Census Bureau |
1995
|
1972
|
1 in 100
|
744
|
2030
|
| ip19705 |
1970 Form 1 Neighborhood Sample |
5% Neighborhood Sample |
Census Bureau |
1998
|
1972
|
1 in 100
|
744
|
2030
|
| ip19706 |
1970 Form 1 Neighborhood Sample |
15% Neighborhood Sample |
Census Bureau |
1998
|
1972
|
1 in 100
|
744
|
2030
|
| ip19801 |
1980 State Sample |
A Sample |
Census Bureau |
1996
|
1983
|
1 in 20
|
4711
|
11337
|
| ip19802 |
1980 Metro Sample |
B Sample |
Census Bureau |
1993
|
1983
|
1 in 100
|
942
|
2267
|
| ip19803 |
1980 Urban/Rural Sample |
C Sample |
Census Bureau |
1998
|
1983
|
1 in 100
|
942
|
2267
|
| ip19901 |
1990 State Sample |
5% Sample |
Census Bureau |
1996
|
1992
|
1 in 20
|
5528
|
12500
|
| ip19902 |
1990 Metro Sample |
1% Sample |
Census Bureau |
1993
|
1992
|
1 in 100
|
1106
|
2500
|
| ip19903 |
1990 Elderly Sample |
3% Elderly Sample |
Census Bureau |
1999
|
1993
|
1 in 33
|
|
|
| ip19904 |
1990 Flat State Sample |
1% Unweighted Sample |
Census Bureau |
1995
|
1995
|
1 in 100
|
1106
|
2500
|
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