NEC® adoption maps (with navigation)

Throughout the United States and around the world, NFPA 70®, National Electrical Code® (NEC®), published by the National Fire Protection Association (NFPA), sets the foundation for electrical safety in residential, commercial, and industrial occupancies.

Electrical Code CoalitionThe 2017 edition of the National Electrical Code® (NEC®) was issued by the NFPA Standards Council on August 4, 2016. Its effective date was August 24, 2016, when it officially became available for adoption by federal, state, county, and municipal governmental entities. Learn more about adoption efforts, status, and the support of the Electrical Code Coalition, which works to increase focus and emphasis on electrical safety for persons and property through direct and full adoption, application and uniform enforcement of the latest edition of the NEC.

If you have a question on the status of NEC adoption in any state, please contact your NFPA Regional Electrical Code Specialist.

Where is the National Electrical Code® in effect?

  • As of September 11, 2017, the 2017 NEC is in effect in 10 states, the 2014 NEC is in effect in 27 states, the 2011 NEC is in effect in 5 states, and the 2008 NEC is in effect in 5 states.*
    MAP: Click the toggle  in the top left corner of the map to see the legend.

* Note: The 2016 California Electrical Code, California Code of Regulations Title 24, Part 3 is based on the 2014 edition of the NEC. 

The 2011 New York City Electrical Code is based on the 2008 edition of the NEC.


The National Electrical Code® process in progress

  • As of September 11, 2017, ten states have completed its 2017 NEC adoption process. Sixteen other states are in the process of updating the statute or administrative rule through which the NEC is adopted to reference the 2017 edition. There are three states currently in the process of adopting the 2014 NEC.
  • MAP: Click the toggle  in the top left corner of the map to see the legend.