Public Use Microdata Samples (PUMS)

The Public Use Microdata Samples (PUMS) are computer-accessible files containing records for a sample of housing Units, with information on the characteristics of each housing Unit and the people in it for 1940-1990. Within the limits of sample size and geographical detail, these files allow users to prepare virtually any tabulations they require. Each datafile is documented in a codebook containing a data dictionary and supporting appendix information. Electronic versions for the codebooks are only available for the 1980 and 1990 datafiles. Identifying information has been removed to protect the confidentiality of the respondents. PUMS is produced by the United States Census Bureau (USCB) and is distributed by USCB, Inter-university Consortium for Political and Social Research (ICPSR), and Columbia University Center for International Earth Science Information Network (CIESIN).

公共使用微观数据样本（PUMS）系计算机可访问文件，包含1940年至1990年间住房单元的记录，其中包含了每个住房单元及其居民的特性信息。在样本规模和地理细节的约束范围内，这些文件使用户能够准备所需的任何虚拟汇总。每个数据文件都配有包含数据字典及辅助附录信息的代码簿进行说明。仅1980年和1990年的数据文件提供了电子版本的代码簿。为保护受访者的隐私，已移除识别信息。PUMS由美国人口普查局（USCB）制作，并由USCB、跨大学政治和社会研究联合会（ICPSR）以及哥伦比亚大学国际地球科学信息网络中心（CIESIN）进行分发。