Utah ZIP Code Areas

This dataset represents an ongoing effort to approximate the geographic extents of 5 digit zip codes. The dataset was produced using a combination of methods and is based on several sets of source data. Methods include: 1) using local zip code polygon data obtained from counties and cities contained within these counties; 2 ) examining the 2000 Census TIGER line file's zip code attributes; and 3) using UGRC address grid quadrant boundaries to assign the zip code to segments within a boundary corresponding to a place location (city, town, places) from the postal service website and address information system (AIS). In addition, UGRC has used the locations of mailing addresses known to have valid zip codes to fine tune this dataset.

本数据集为一项持续推进的工作成果，旨在拟合5位邮政编码的地理覆盖范围。本数据集通过多种方法联合构建，且基于多组源数据生成。所用方法包括：1）获取自各郡县及其下辖城镇的本地邮政编码多边形数据；2）检视2000年美国人口普查TIGER线文件（TIGER Line File）中的邮政编码属性字段；3）借助UGRC的地址网格象限边界，将邮政编码分配至与邮政服务网站及地址信息系统（Address Information System，AIS）中记载的地点（城市、城镇等）边界相对应的路段。此外，UGRC还通过已知有效邮政编码的邮寄地址位置信息，对本数据集进行了微调优化。