State Plane Coordinate System of 2022 (SPCS2022)

SPCS2022 is the third generation of the State Plane Coordinate System. The first version was created in the 1930s (SPCS 27) and the second in the 1980s (SPCS 83) as part of providing access to the horizontal datums current at the time of their creation. SPCS2022 will be referenced to the four 2022 Terrestrial Reference Frames that will be released as part of NGS  National Spatial Reference System (NSRS) Modernization. General information about SPCS, including its existing and previous versions, is available on the SPCS website.

The maps below show that SPCS2022 has up to three zone layers within each state, and the number of zones varies greatly between states (click on the maps to get higher resolution versions). Every state and U.S. territory has a statewide zone. Most states also have a multiple-zone layer that covers the entire state, and some have a multiple-zone layer that covers only part of the state. In addition, there are “special use” zones that overlap parts of more than one state or provide coverage outside state boundaries.

The reason for large variation in the number of layers and zones is that stakeholders in many states actively participated in the SPCS2022 design process. The maps below show that 41 states submitted 67 requests and/or proposal forms for SPCS2022 zones. Requests were for zones designed by NGS, and proposals were for zones designed by stakeholders. Proposals were reviewed and approved by NGS, resulting in 27 states designing their own zones.