How many zones cover the United States in the State Plane Coordinate system?

The State Plane Coordinate System (SPCS) is a system that divides the United States into a series of zones to provide accurate mapping for surveying and engineering applications. Each zone is crafted so that it minimizes distortion for the particular area it covers, making it more suitable for local mapping purposes than other coordinate systems such as latitude and longitude.

The correct indication of 120 zones accounts for the specific requirements of accurately representing the diverse geography across the United States. Each state may have one or more zones based on its size and shape, particularly in states that have significant longitudinal or latitudinal extents, where multiple zones can be necessary to ensure precision in professional and engineering applications.

This extensive division makes the SPCS versatile and practical for various applications, providing a framework that addresses local geospatial needs effectively and accurately.