Census of Population and Housing, 1980: Number of Workers by County of Residence by County of Work

This file contains a supplement to Summary Tape File (STF) 4, and tabulates data taken from table PB34 from the 1980 census. The supplement lists the names of the place-of-work destinations that are associated with each cell of table PB34. In general, work place locations within standard metropolitan statistical areas (SMSA's) were coded to census tract and block, while work places outside SMSA's were coded to place, minor civil division (MCD's), or county. Places of 2,500 or more population (1,000 or more in Alaska and Hawaii), based on 1977 population estimates, were recognized for place-of-work coding. Selected large incorporated places may also be specified as places of work, but are usually towns, cities, or groups of towns.本文件为汇总磁带文件4号（Summary Tape File, STF 4）的补充材料，对1980年人口普查中PB34表的相关数据进行制表呈现。本补充材料列出了与PB34表各单元格相对应的工作目的地名称。 总体而言，标准大都市统计区（Standard Metropolitan Statistical Areas, SMSA）范围内的工作场所位置已编码至普查区与街区；而位于该统计区之外的工作场所，则被编码至居民点、县级以下民政分区（Minor Civil Division, MCD）或县。 依据1977年人口估算数据，人口规模达到2500及以上的居民点（阿拉斯加与夏威夷地区为1000及以上）可被纳入工作场所编码的认定范围。 部分选定的大型建制居民点也可被指定为工作场所，此类地点通常为城镇、城市或城镇集群。