Counties - United States of America

This dataset is part of the Geographical repository maintained by Opendatasoft.  This dataset contains data for counties and equivalent entities in United States of America. The primary legal divisions of most states are termed counties. In Louisiana, these divisions are known as parishes. In Alaska, which has no counties, the equivalent entities are the organized boroughs, city and boroughs, municipalities, and for the unorganized area, census areas. The latter are delineated cooperatively for statistical purposes by the State of Alaska and the Census Bureau. In four states (Maryland, Missouri, Nevada, and Virginia), there are one or more incorporated places that are independent of any county organization and thus constitute primary divisions of their states. These incorporated places are known as independent cities and are treated as equivalent entities for purposes of data presentation. The District of Columbia and Guam have no primary divisions, and each area is considered an equivalent entity for purposes of data presentation. The Census Bureau treats the following entities as equivalents of counties for purposes of data presentation: Municipios in Puerto Rico, Districts and Islands in American Samoa, Municipalities in the Commonwealth of the Northern Mariana Islands, and Islands in the U.S. Virgin Islands. The entire area of the United States, Puerto Rico, and the Island Areas is covered by counties or equivalent entities.Processors and tools are using this data. Enhancements Add ISO 3166-3 codes. Simplify geometries to provide better performance across the services. Add administrative hierarchy.

本数据集隶属于由 Opendatasoft 维护的地理数据存储库。该数据集涵盖了美国各州及其相应实体的数据。大多数州的主要法律划分为县。在路易斯安那州，这些划分被称为教区。阿拉斯加州由于没有县，其相应实体包括有组织的市辖区、市辖区市、自治市镇，以及非组织区域，后者由阿拉斯加州政府和人口普查局合作划定，以进行统计目的。在马里兰州、密苏里州、内华达州和弗吉尼亚州的四个州中，存在一个或多个独立于任何县组织的市镇，这些市镇因此构成了其州的主要行政区划，被称为独立市，在数据展示方面被视为等效实体。哥伦比亚特区和关岛没有主要行政区划，每个区域在数据展示方面均被视为等效实体。美国人口普查局将以下实体视为县的数据展示等效：波多黎各的市政、美属萨摩亚的区岛、北马里亚纳群岛的自由邦的市政以及美属维尔京群岛的岛屿。美国、波多黎各和岛屿地区的整个区域均由县或等效实体覆盖。处理器和工具正在使用这些数据。增强功能：添加 ISO 3166-3 代码，简化几何形状以提升跨服务的性能，添加行政层级。