Area code 346: Texas
Area code 346 is a US state area code for Texas, on Central Time. It has 737 prefixes in service across 45 rate centers, the largest being Houston, Houston Suburban and Bammel. It shares its area with 281, 621, 713 and 832, so local numbers there can start with any of them. Local calls there take 10 digits.
Local time in area code 346
America/Chicago
Prefixes in service
737 of 792 possible
45 rate centers
Area code 346 facts
| Location | Texas, United States |
|---|---|
| Time zone | Central Time |
| Overlays | 281, 621, 713, 832 |
| Overlay of | 832 |
| In service since | July 1, 2014 |
| Local calls | 10 digits; toll calls 1 + 10 digits |
| Carrier | Not shown. An area code is where a number was issued; numbers port between carriers. Check line type |
Which cities and towns use area code 346?
NANPA records each prefix against a rate center, the local billing area a number belongs to, usually named after its main town. These are the 346 rate centers with the most prefixes in service. 33 smaller ones aren't listed.
| Rate center | Prefixes |
|---|---|
| Houston | 173 |
| Houston Suburban | 69 |
| Bammel | 57 |
| Langham Creek | 47 |
| Spring | 35 |
| Cypress | 32 |
| Richmond-Rosenberg | 26 |
| Sugar Land | 22 |
| Baytown | 20 |
| Satsuma | 18 |
| Tomball | 18 |
| Humble | 18 |
Source: NANPA central office code assignments, file dated 10/17/2026. Each prefix holds up to 10,000 numbers.
How do I dial a 346 number?
NANPA's dialling plan for 346: local calls inside the code take 10 digits, toll calls 1 + 10 digits. From another area code, dial 1 first. From abroad, use +1. The examples use 555-0147, from a range reserved for fictional numbers.
| Local call inside 346 | 346-555-0147 |
|---|---|
| From another US or Canadian area code | 1-346-555-0147 |
| From outside North America | +1 346 555 0147 |
| E.164, for CRMs and SMS tools | +13465550147 |
When did area code 346 start?
Area code 346 went into service on July 1, 2014 as an overlay of 832. Today 346, 281, 621, 713 and 832 cover the same area as an overlay, which is why 10-digit dialling is needed for local calls there.
Tools for 346 numbers
- Area code lookup
Look up any code or a whole list of numbers, or find the codes for a state or city.
- Area code time zone
Local time for a list of numbers, with a callable-now flag.
- NPA-NXX lookup
Rate center and state for one prefix, a level below the area code.
- TCPA calling hours checker
Whether it's inside the federal 8 a.m. to 9 p.m. calling window there now.
Next step
A 346 number tells you where it was issued, not what it is now.
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Area code 346 questions
- What state is area code 346?
- Area code 346 is in Texas, United States. Its largest rate centers by number of prefixes are Houston, Houston Suburban, Bammel, Langham Creek and Spring.
- What time zone is area code 346 in?
- Central Time.
- What area codes overlay 346?
- 281, 621, 713 and 832. An overlay adds a new code to the same area instead of splitting it, so neighbours can have different area codes and local calls need 10 digits.
- When did area code 346 start?
- Area code 346 went into service on July 1, 2014 as an overlay of 832.
- Is a 346 number a cell phone or a landline?
- The area code can't tell you. In the US and Canada mobiles, landlines and VoIP lines share area codes and prefixes, and numbers move between carriers and line types. Only a live line-type lookup answers it for one number.
- How many phone numbers does area code 346 have?
- 737 of its 792 possible prefixes are in service, and each prefix holds up to 10,000 numbers. That counts prefixes assigned to carriers, not numbers in use.
Other area codes in Texas
210214254281325361409430432469512621682713726737806817830832903915936940945956972979
Sources
Location, overlays, in-service date and dialling plan: NANPA NPA database, file dated 10/16/2026. Prefixes and rate centers: NANPA central office code assignments, 10/17/2026. Time zones mapped to the IANA time zone database. By the SimpleVerifier Team; how we build these pages.