Archive of Census Related Products (ACRP): 1990 Standard Extract Files

The 1990 Standard Extract Files portion of the Archive of Census Related Products (ACRP) contains population and housing data derived from the U.S. Census Bureau's 1990 STF3A database. The population data includes age

distribution, education levels, ethnicity, income distribution, labor force status and family structure, while the housing data embodies size and state of the housing Unit, value of the Unit, water, sewage, heating, and monthly owner costs. The data are available by county, county subdivisions, place within-county, tract, block numbering area (bna), and blockgroup. Each file contains a unique POLygon IDentification (POLID) field which matches a similar field in the corresponding TIGER-based boundary file. Tract and blockgroup files are grouped by MSA (Metropolitan Statistical Area) and CMSA (Consolidated Metropolitan Statistical Area). This portion of the ACRP is produced by the Columbia University Center for International Earth Science Information Network (CIESIN).

存档中与美国人口普查相关产品（ACRP）的1990年标准提取文件部分包含了由美国人口普查局1990年STF3A数据库派生的人口和住房数据。其中人口数据涵盖了年龄分布、教育水平、种族、收入分配、劳动力状况和家庭结构等信息；而住房数据则包含了住房单元的大小和状态、单元价值、供水、排水、供暖以及业主每月成本。数据可按县、县级区划、县域内地点、街区、编号区块（BNA）和区块群进行查询。每个文件均包含一个独特的多边形标识（POLID）字段，该字段与对应基于TIGER边界的文件中的相似字段相匹配。街区与区块群文件按大都市统计区（MSA）和合并大都市统计区（CMSA）进行分组。ACRP的此部分由哥伦比亚大学国际地球科学信息网络中心（CIESIN）制作。