Registrar of Voters City Boundaries

City boundaries within Alameda County. Boundaries represent voting city (i.e., city designation for each address) and therefore may align with parcel boundaries in cases where parcels (and sometimes residences) are divided by the true city boundary. (See City Limits layer created by Alameda County Community Development Agency for true city limits boundaries.)本数据集涵盖阿拉米达县（Alameda County）境内的城市边界数据。该边界对应投票城市属性，即各地址对应的城市归属标识；当宗地（parcel，有时包含住宅）被真实城市边界分割时，本边界可能与宗地边界重合。（可参考由阿拉米达县社区发展局制作的城市界限图层（City Limits layer）以获取真实城市边界范围。）