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St. Louis Region

Franklin County is outside Missouri's emissions-test list

Franklin County vehicle owners no longer fall under the Gateway emissions-test requirement, even though nearby Jefferson and St. Louis-area counties still do.

Franklin County sits close enough to St. Louis that emissions testing can be confusing. Missouri DNR announced that emissions testing ended for vehicles registered in Franklin County beginning July 1, 2022. Gateway VIP’s current county list names St. Louis City, St. Louis County, St. Charles County, and Jefferson County, not Franklin County.

That does not remove every vehicle step. Safety inspection, insurance, title, registration, and personal property tax paperwork can still matter depending on the vehicle and transaction. The useful local distinction is this: if the vehicle is registered in Franklin County, check DOR and county paperwork, but do not assume the Gateway emissions test applies just because the county touches the St. Louis region.

References

Where this fits: this note belongs to Franklin County. See every local note for the county on its page.

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Related local notes

More short, source-checked notes near this one.

Franklin County tax receipts have their own search path Franklin County residents can use the collector and county payment portal to look up tax bills and receipts before a plate-renewal or property-payment errand. A Franklin County driveway onto a county road needs a permit check Franklin County says new or modified driveways and entrances from county roads need an entrance permit through the Highway Department. Franklin County addressing is a Planning and Zoning task Franklin County's addressing page says unincorporated addresses, road names, and district validation run through the county addressing authority. Franklin County value appeals have a Board of Equalization step Franklin County owners who disagree with an assessed value need to work through the assessor and Board of Equalization path before a later state appeal.

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