MSAG Communities (Hosted Feature Layer)

The MSAG community boundary datalayer is a polygon representation of the Community field within the Master Street Address Guide (MSAG). The MSAG is a comprehensive, official listing of the streets of the Commonwealth developed for 911.主街道地址指南（Master Street Address Guide，简称MSAG）社区边界数据图层，是该指南中社区字段的多边形表示形式。MSAG是专为911应急服务开发的英联邦官方综合街道名录。