Most common airport runway numbers by US state
This is a fun visualization that looks at all the major airport runways in the United States, and shows the most common orientation in each state.
As a bonus, the striped pattern in each state is aligned with the value for that state, also taking into consideration magnetic declination as of February 2026. This means that as the magnetic declination changes, so too will the map, so the pattern is really only "accurate" for the time it was made.
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The data from ourairports.com categorizes airports into different sizes. Anything that wasn't "medium" or "large" was filtered out. The definitions are:
Large airport - Land airport with scheduled major airline service with millions of passengers/year, or major military base).
Medium airport - Land airport with scheduled regional airline service, or regular general aviation or military traffic.
Large airport - Land airport with scheduled major airline service with millions of passengers/year, or major military base).
Medium airport - Land airport with scheduled regional airline service, or regular general aviation or military traffic.