ACUB 2020

The Adjusted Census Urban Boundary (ACUB) Layer is a single polygon representing the boundary of an individual ACUB. The Adjusted Census Urban Boundary includes the following area: urban cluster area (where minimum population is 5,000) or urbanized area as designated by the U.S. Census; the entire corporate limits of any incorporated city or village designated as partially urban by the Census; and adjacent area which meets specified criteria and is agreed upon by MDOT in cooperation with the responsible local officials. Adjusted Census Urban Boundaries are subject to approval by the Federal Highway Administration.调整后人口普查城市边界（Adjusted Census Urban Boundary，简称ACUB）图层为单个多边形，用于表征单个ACUB的边界范围。调整后人口普查城市边界涵盖以下三类区域：一是人口下限为5000的城市集群区域，或由美国人口普查局（U.S. Census）划定的城市化区域；二是被人口普查局认定为部分城区的建制市或建制村的全部法定管辖范围；三是符合特定标准，且经MDOT与相关地方主管部门协商一致的毗邻区域。调整后人口普查城市边界需经美国联邦公路管理局（Federal Highway Administration）审批通过。