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zipcodes.pro — AREA-CODE/350

350 area code

Area code 350 is in California. It covers Stockton, Modesto, Tracy and 128 other places: 119 ZIP codes in San Joaquin, Stanislaus, Merced and 8 other counties. Local time there is , Pacific Time. In service since 2022 as an overlay: it covers the same area as 209, so a number from there can have either code.

Time zone
Pacific
Largest city
Stockton
Overlays
209
In service since
2022
Rate centres
41
Prefixes assigned
88 (880,000 numbers)

Who calls from a 350 number

NANPA records the carrier each block of 350 numbers is assigned to. Of the 655,000 350 numbers assigned, 62% are with cable, internet-calling, business and other carriers (Onvoy, Commio and Bandwidth); 38% with mobile carriers (Verizon Wireless, AT&T Mobility and T-Mobile).

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 350 numbers
CarrierKindShare
OnvoyCable, VoIP, other37%
Verizon WirelessMobile15%
AT&T MobilityMobile12%
T-MobileMobile10%
CommioCable, VoIP, other6%
BandwidthCable, VoIP, other4%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 350

The 39 places with a telephone rate centre of their own using 350, largest first. Each links to its ZIP codes.

Places in area code 350
PlaceZIP codesPopulation
Stockton, CA 20 322,326
Modesto, CA 10 219,215
Tracy, CA 5 96,966
Merced, CA 5 91,953
Manteca, CA 2 89,043
Turlock, CA 3 72,502
Lodi, CA 3 67,607
Los Banos, CA 1 47,593
Atwater, CA 1 32,162
Galt, CA 1 25,962
Riverbank, CA 1 25,166
Patterson, CA 1 24,693
Oakdale, CA 1 23,194
Ripon, CA 1 16,201
Newman, CA 1 12,316
Waterford, CA 1 9,204
Hughson, CA 1 7,648
Escalon, CA 1 7,451
Gustine, CA 1 6,133
Dos Palos, CA 1 5,765
Jackson, CA 1 5,048
Sonora, CA 1 4,919
Tuolumne, CA 1 3,598
Planada, CA 1 3,506
Jamestown, CA 1 3,265
San Andreas, CA 1 2,979
Sutter Creek, CA 1 2,702
Linden, CA 1 2,389
Le Grand, CA 1 1,636
Mariposa, CA 1 1,137
Clements, CA 1 910
Valley Springs, CA 1 910
Thornton, CA 1 817
Wallace, CA 1 714
Groveland, CA 1 490
Snelling, CA 1 243
Knights Ferry, CA — 64
Moccasin, CA 1 —
Pinecrest, CA 1 0

Nearby places using 350

These places have no rate centre of their own in NANPA's records; the nearest one uses 350. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 350

119 ZIP codes in 78 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 350 numbers are issued

NANPA's rate centres with the most 350 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 350
Rate centrePlacePrefixes
STOCKTON Stockton 11
MODESTO Modesto 10
ATWATER Atwater 7
MANTECA Manteca 5
LODI Lodi 4
TRACY Tracy 4

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 350

Where is area code 350?

Area code 350 is in California. It covers Stockton, Modesto, Tracy and 128 other places: 119 ZIP codes in San Joaquin, Stanislaus, Merced and 8 other counties.

What ZIP codes are in area code 350?

119 ZIP codes, by the town each is mailed to: Stockton (20, 95201 to 95297), Modesto (10, 95350 to 95397), Tracy (5, 95304 to 95391), Merced (5, 95340 to 95348) and 74 more towns. The full list is on this page.

What time zone is area code 350 in?

Pacific time.

Is a 350 number a mobile or a landline?

It can be either. 38% of 350 numbers are assigned to mobile carriers and 0% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 350?

209. They cover the same area as 350, so a new number there can be given any of them.

Does a 350 number mean the caller is in California?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 350 call can come from anywhere.

Other area codes in California

All 41 California area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 350.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/350

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