The short answer
Missouri has no statewide adoption of the National Electrical Code: cities and counties adopt their own edition. The edition the app cites for Missouri is NEC 2023, labelled current, varies locally.
- Current edition
- NEC 2023 (current, varies locally)
- Adoption
- No statewide adoption: cities and counties adopt their own
- Licensing board
- Missouri Division of Professional Registration - Office of Statewide Electrical Contractors
- Source
- www.cainelectricstl.com (secondary: there is no statewide rule to cite)
Code adoption cycles change. Always confirm the edition and amendments in force with your Authority Having Jurisdiction (AHJ) before permitting work.
How does Missouri adopt the NEC?
Missouri has no statewide electrical code adoption; St. Louis City, St. Louis County, and many fast-growing suburbs (O'Fallon, Wildwood, etc.) have moved to NEC 2023, while smaller and rural counties may still enforce 2020 or 2017. There is no statewide electrician license.
What are Missouri's amendments to the NEC?
The app's record for Missouri lists no individual amendments; the adoption summary above says how the state applies the code.
Who issues electrical permits in Missouri?
Permits and inspections are entirely local; many rural counties have no formal inspection program.
Who licenses electricians in Missouri?
Statewide licensing of electrical contractors through the Division of Professional Registration's Office of Statewide Electrical Contractors (RSMo 324.900-324.945), which political subdivisions must recognize in lieu of a local contractor license; electricians themselves are still licensed locally by municipalities and counties (e.g., St. Louis City/County, Kansas City). Licensing board: Missouri Division of Professional Registration - Office of Statewide Electrical Contractors.
Missouri Division of Professional Registration - Office of Statewide Electrical Contractors
Is Missouri moving to a newer NEC edition?
No statewide electrical code; each jurisdiction adopts. St. Louis City and County have enforced NEC 2023 since early 2025; Kansas City and rural counties vary. Check the local AHJ.
Is Missouri on NEC 2026?
Not statewide: Missouri has no statewide adoption, so the edition depends on the city or county. The edition the app cites, NEC 2023, is one edition older than NEC 2026; check with the local building department.