Kentucky ZIP Code Boundaries

The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. ZIP Code Tabulation Areas (ZCTAs) are approximate area representations of U.S. Postal Service (USPS) ZIP Code service areas that the Census Bureau creates to present statistical data for each decennial census. The Census Bureau delineates ZCTA boundaries for the United States, Puerto Rico, American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands once each decade following the decennial census. Data users should not use ZCTAs to identify the official USPS ZIP Code for mail delivery. The USPS makes periodic changes to ZIP Codes to support more efficient mail delivery. The Census Bureau uses tabulation blocks as the basis for defining each ZCTA. Tabulation blocks are assigned to a ZCTA based on the most frequently occurring ZIP Code for the addresses contained within that block. The most frequently occurring ZIP Code also becomes the five-digit numeric code of the ZCTA. These codes may contain leading zeros. Blocks that do not contain addresses but are surrounded by a single ZCTA (enclaves) are assigned to the surrounding ZCTA. Because the Census Bureau only uses the most frequently occurring ZIP Code to assign blocks, a ZCTA may not exist for every USPS ZIP Code. Some ZIP Codes may not have a matching ZCTA because too few addresses were associated with the specific ZIP Code or the ZIP Code was not the most frequently occurring ZIP Code within any of the blocks where it exists. The ZCTA boundaries in this release are those delineated following the 2020 Census. Download Link: https://ky.box.com/v/kymartian-zip-code-boundariesTIGER/Line形状文件（TIGER/Line shapefiles）及相关数据库文件（.dbf）是从美国人口普查局（U.S. Census Bureau）的主地址文件/拓扑集成地理编码与参照数据库（Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database，简称MTDB）中提取的精选地理与制图信息。MTDB为无缝衔接的全国性数据集，各组成部分之间无重叠或空隙，但每份TIGER/Line形状文件均可作为独立数据集单独使用，也可组合使用以覆盖全美范围。邮政编码制表区域（ZIP Code Tabulation Areas，ZCTAs）是美国邮政服务（United States Postal Service, USPS）邮政编码服务区域的近似面积表征，由人口普查局创建，用于呈现十年一次人口普查（decennial census）的统计数据。人口普查局会在每十年一次人口普查结束后，为美国、波多黎各、美属萨摩亚、关岛、北马里亚纳群岛联邦以及美属维尔京群岛划定ZCTA边界。数据使用者不应使用ZCTAs来识别用于邮件投递的官方USPS邮政编码。美国邮政服务会定期调整邮政编码以提升邮件投递效率。人口普查局以制表区块（tabulation blocks）作为定义每个ZCTA的基础：制表区块将根据其内部地址最常出现的邮政编码被分配至对应的ZCTA，该最常出现的邮政编码也将成为该ZCTA的五位数字编码，此类编码可能包含前导零。不含地址但被单一ZCTA环绕的区块（飞地，enclaves）将被划归至周边的ZCTA。由于人口普查局仅通过最常出现的邮政编码来分配区块，并非所有USPS邮政编码都存在对应的ZCTA。部分邮政编码可能因关联地址过少，或其从未成为对应区块内最常出现的邮政编码，而无匹配的ZCTA。本次发布的ZCTA边界为2020年十年一次人口普查后划定的版本。下载链接：https://ky.box.com/v/kymartian-zip-code-boundaries