Globe shaped with a grid and continent shapes attached to the grid.

TEXAS COORDINATE SYSTEMS

Current Official Coordinate Systems

Two coordinate systems are currently official in Texas under Natural Resources Code § 21.071:

  • Texas Coordinate System of 1927 (NAD 27 / SPCS27)

  • Texas Coordinate System of 1983 (NAD 83 / SPCS83)

Each system is defined and used separately. Coordinates under the Texas Coordinate System of 1927 are expressed in U.S. Survey Feet or varas. Coordinates under the Texas Coordinate System of 1983 are expressed in meters, U.S. Survey Feet, or varas. Visit the link below for complete current official coordinate system definitions.

Texas Natural Resources Code: Texas Coordinate Systems

Alternate Coordinate Systems

Under Natural Resources Code § 21.0711, TSRC has the authority to adopt a revised coordinate system for use in Texas. Any system adopted by TSRC under this authority becomes an official state coordinate system.

TSRC has not yet adopted an alternate coordinate system. This page will be updated when a system is formally adopted.