What State Plane zone is my airport in?

Enter a latitude and longitude or airport location and AvPlot returns the State Plane Coordinate System (SPCS) zone, projection type, and EPSG code for that point.

What is the State Plane Coordinate System?

It is a set of US zones, each with its own Lambert Conformal Conic or Transverse Mercator projection, used so survey and CAD coordinates stay accurate over a local area.

Why do airport CAD drawings use State Plane coordinates?

State Plane grid coordinates in feet tie ALP and survey linework to a published datum (NAD83) with minimal distortion, which is the convention for airport engineering drawings.

State Plane Zone Lookup

Identify the State Plane Coordinate System zone for any US location by coordinates or airport identifier.

SPCS83 — NAD83 coordinate system zones

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FAA LID / ICAO Identifier

Zone boundaries are approximate centroids derived from EPSG registry data. State Plane zones are defined under SPCS83 (NAD83). Always verify the applicable zone with your survey datum and jurisdiction before use in official submittals.