About Area Code 235
- Region Code
- 235
- City
- Columbia
- State
- Missouri
- Population
- 1,482,993
- Largest City
- Columbia
- Neighboring Codes
- Time Zone
- Central Time
Missouri
(235) Area Code 235 — Columbia, Missouri
235 Area Code – Columbia, Missouri: Location, Time Zone & History
Build trust, look local, and grow your business with a phone number in area code 235. Instant activation, flexible forwarding, and clear pricing.
Map of Area Code 235
Available Phone Numbers
Choose from popular and easy-to-remember local numbers. Instant purchase and activation.
History & Cultural Notes
Missouri's numbering history took a notable turn in the mid-2020s, when growth in the 573 region pushed that area code toward exhaustion. Regulators introduced permissive 10-digit local dialing on August 26, 2023, giving residents and businesses time to adjust before mandatory 10-digit dialing began on February 24, 2024. A month later, on March 24, 2024, area code 235 went into service as an all-services overlay on 573, meaning new phone lines across the region began receiving 235 numbers while existing 573 numbers stayed unchanged.
The 235/573 numbering area covers most of eastern and central Missouri outside the St. Louis metro, a footprint whose 2020 Census population across its counties was recorded at just under 1.5 million. Beyond Columbia, the plan area serves cities including Jefferson City, Cape Girardeau, Hannibal, Rolla, and Farmington, reflecting a mix of state government, higher education, and smaller industrial and agricultural communities. Hannibal carries particular cultural weight as the childhood home of Mark Twain, whose upbringing there shaped the settings of his novels.
- Higher education, anchored by the University of Missouri
- State government administration
- Agriculture
- Healthcare
- Manufacturing