Area code 346

Area code 346 Houston, Texas

Area code 346 is in Texas, with numbers assigned in Houston, Spring, Sugar Land and 29 more places. It’s 11:12 PM there now.

State: Texas29 area codes in Texas
Time zone: Central11:12 PM there now
Exchanges: 75232 places
Overlay: 281, 621, 713 and 832Same area, 10-digit dialing

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Where area code 346 is

Numbers in 346 are assigned to 32 places in 10 counties: Harris County, Fort Bend County, Montgomery County, Waller County, Chambers County, Galveston County, plus 4 more.

Houston has the most, 47% of the exchanges; the rest are spread across 31 other places.

Houston352
Spring36
Sugar Land22
Baytown20
Tomball18
Humble18
Channelview15
Dickinson14
Stafford14
Cleveland14
Katy13
Alvin10
Beach City9
Porter Heights8
Deer Park8
Manvel7
Arcola7
Pinehurst6
Friendswood6
La Porte4
Splendora4
League City4
Highlands4
Liverpool3

Phone companies in 346

752 blocks of numbers in 346 are held by 53 phone companies. The most belong to Inteliquent (133), Aerial Communications (121) and AT&T Mobility (88).

A large share, about 65%, belongs to competitive and internet phone carriers; wireless networks hold 25% and local phone and cable companies 10%.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

346 went into service in 2014, added to the area of 832.

281 (since 1996), 621 (since 2025), 713 (since 1947) and 832 (since 1999) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

389 new exchanges were assigned since 2021, the latest in September 2026.

Calling 346

It’s 11:12 PM Central time in 346 right now.

From elsewhere in the U.S., dial 1, 346 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Texas has 29 area codes: 210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 621, 682, 713, 726, 737, 806, 817, 830, 832, 903, 915, 936, 940, 945, 956, 972 and 979.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 346 area code

Map of the 346 area code around Houston, Spring and Sugar Land, Texas.

Interactive map © OpenStreetMap contributors

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Questions about 346

Where is area code 346?

In Texas, covering Houston, Spring and Sugar Land and other places across 10 counties.

What time zone is 346 in?

Central time. It was 11:12 PM there when this page loaded.

Is 346 an overlay?

Yes. 281, 621, 713 and 832 serve the same area, so dial all 10 digits for local calls.

Which phone companies have 346 numbers?

53 companies hold blocks; the most belong to Inteliquent, Aerial Communications and AT&T Mobility. About 25% of blocks are wireless.

Is 346 running out of numbers?

Not on record. 389 new exchanges have been assigned since 2021.