Spheres of Influence

Boundaries of the spheres of influence of cities in San Mateo County. A sphere of influence is a planning boundary outside of an agency’s legal boundary (such as the city limit line) that designates the agency’s probable future boundary and service area. Data includes the names of areas located within the sphere of influence.

圣马特奥县城市影响范围边界。影响范围是指超出机构法定边界（如城市边界线）的规划边界，用以界定机构可能的未来边界与服务区域。数据包括位于影响范围内的区域名称。