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Area Code 628 Location & Details

State / Region: California • Country: United States

Major Cities Covered: San Francisco, South San Francisco, San Rafael, Novato, Mill Valley, Larkspur, San Anselmo, Corte Madera, Tiburon, Fairfax

Standard Dial Format
+1 (628) XXX-XXXX
Country Code: +1 (NANP Format)
What State is Area Code 628?
CaliforniaState Hub →
Country Territory
United States
628 Area Code Time Zone
Pacific
628 Overlay Codes
415

Area Code 628 Geographic Map

Interactive location bounds and coverage area for California (Pacific Timezone)

Lat: 37.70° • Lng: -122.27°
📍 Geographic Center: CaliforniaMap data © OpenStreetMap contributors

Where is Area Code 628 Located?

Telephone area code 628 is assigned to California in United States. It serves cities and metropolitan communities including San Francisco, South San Francisco, San Rafael, Novato, Mill Valley, Larkspur, San Anselmo, Corte Madera, Tiburon, Fairfax.

Historical Context & Area Code Overlay Information:628 serves California (United States).

For local and long-distance calls within area code 628, standard 10-digit dialing (628) XXX-XXXX applies.

Who Called Me from Area Code 628?

Received an unknown call, missed call, or text scam from area code 628? Here is how to trace who is calling from 628 area code and verify unknown numbers safely:

1.
Identify Missed Calls & Voicemails:

Legitimate contacts usually leave a detailed voicemail or caller ID record.

2.
Watch Out for Neighbor Spoofing:

Robocallers often fake incoming caller ID numbers using your local 628 prefix to boost pick-up rates.

3.
Reverse Phone Lookup Area Code 628:

Search public white-pages or use caller intelligence guides before returning unfamiliar calls.

Learn How Reverse Phone Lookups Work→

How to Call Area Code 628 & Dialing Format

When placing a phone call to a number in area code 628, follow the correct dialing format depending on your calling location:

  • Calling from inside the US / Canada (+1): Dial 1 + (628) + 7-digit number.
  • Calling from an international location outside +1: Dial your country's international exit code (e.g. 011 in US or + on mobile) + 1 + 628 + 7-digit number.
  • Do I need to dial area code 628 for local calls? Yes, 10-digit dialing (area code + line number) is mandatory across North American telephone networks.

Top Cities & Municipalities Served in Area Code 628

Urban centers, census places, and communities within the +1-628 calling area

13 Major Cities Listed
City NameCountyPopulation% of 628 Pop
San FranciscoSan Francisco County826,07976.6%
South San FranciscoSan Mateo County64,9416.0%
San RafaelMarin County59,4105.5%
NovatoMarin County51,9474.8%
Mill ValleyMarin County13,7991.3%
LarkspurMarin County12,6201.2%
San AnselmoMarin County12,5551.2%
Corte MaderaMarin County9,9290.9%
TiburonMarin County8,8810.8%
FairfaxMarin County7,4170.7%
SausalitoMarin County7,0190.7%
RossMarin County2,3040.2%
BelvedereMarin County2,0660.2%

Counties Covered by Area Code 628

Geographic county distribution and population coverage across California

County NameTotal Population% of 628 Area% of County
San Francisco County820,94576.6%100%
Marin County255,70417.4%74%
San Mateo County740,6276.0%9%

☎️Area Code 628 Exchange Prefixes & Carriers

Showing 50 of 208 central office 3-digit prefixes and assigned telecom carriers

49% Landline24% Wireless27% VoIP
PrefixLine UsageRate CenterAssigned CarrierAssign Date
(628) 200-💻VoIPSNFC JUNPRONVOY, LLC - CAN/A
(628) 201-💻VoIPSNFC CNTRLONVOY, LLC - CA12/01/2015
(628) 202-📱WirelessBELVEDERET-MOBILE USA, INC.04/01/2016
(628) 203-💻VoIPSTNSN-BLNSONVOY, LLC - CA06/27/2016
(628) 204-📱WirelessNICASIOT-MOBILE USA, INC.07/01/2016
(628) 205-📱WirelessSNFC CNTRLCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA07/27/2016
(628) 206-📞LandlineSNFC CNTRLPACIFIC BELL06/02/2015
(628) 207-💻VoIPSNFC MT-EVBANDWIDTH.COM CLEC, LLC - CA07/29/2016
(628) 208-📞LandlineSNFC CNTRLVONAGE AMERICA LLC08/09/2016
(628) 209-📞LandlineNOVATOTELNYX LLC12/15/2016
(628) 210-💻VoIPINVERNESSPEERLESS NETWORK OF CALIFORNIA, LLC - CA09/19/2016
(628) 211-📞LandlineCAMULTIPLE OCN LISTINGN/A
(628) 212-💻VoIPCORTEMADRABANDWIDTH.COM CLEC, LLC - CA09/20/2016
(628) 213-📱WirelessSNFC CNTRLT-MOBILE USA, INC.12/01/2016
(628) 214-💻VoIPNOVATOPEERLESS NETWORK OF CALIFORNIA, LLC - CA09/20/2016
(628) 215-💻VoIPMILLVALLEYBANDWIDTH.COM CLEC, LLC - CA09/20/2016
(628) 216-💻VoIPPOINTREYESBANDWIDTH.COM CLEC, LLC - CA09/20/2016
(628) 217-📞LandlineSNFC CNTRLTELEPORT COMMUNICATIONS AMERICA, LLC - CA08/22/2016
(628) 218-📞LandlineSNFC CNTRLMCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA06/16/2017
(628) 219-📱WirelessSNFC MT-EVNEW CINGULAR WIRELESS PCS, LLC07/27/2017
(628) 220-📞LandlineSNFC CNTRLLEVEL 3 COMMUNICATIONS, LLC - CA02/12/2016
(628) 221-📞LandlineSNFC CNTRLCENTURYLINK COMMUNICATIONS, LLC07/14/2015
(628) 222-💻VoIPSNFC CNTRLONVOY, LLC - CA09/29/2014
(628) 223-📞LandlineSNFC CNTRLTELEPORT COMMUNICATIONS AMERICA, LLC - CA09/16/2015
(628) 224-📱WirelessSNFC MT-EVNEW CINGULAR WIRELESS PCS, LLC10/02/2015
(628) 225-📱WirelessSNFC CNTRLCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA10/02/2015
(628) 226-📱WirelessBELVEDERENEW CINGULAR WIRELESS PCS, LLC11/13/2015
(628) 227-💻VoIPSNFC MT-EVBANDWIDTH.COM CLEC, LLC - CAN/A
(628) 228-📞LandlineSNFC CNTRLPACIFIC BELL02/18/2016
(628) 229-💻VoIPPOINTREYESONVOY, LLC - CA04/29/2016
(628) 230-📱WirelessSNFC CNTRLCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA01/18/2018
(628) 231-📞LandlineSNFC CNTRLTELEPORT COMMUNICATIONS AMERICA, LLC - CA10/27/2015
(628) 232-💻VoIPINVERNESSPEERLESS NETWORK OF CALIFORNIA, LLC - CA10/07/2014
(628) 233-📱WirelessSNFC CNTRLNEW CINGULAR WIRELESS PCS, LLC10/05/2015
(628) 234-📞LandlineSAN RAFAELU.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS03/13/2015
(628) 235-📞LandlineSNFC CNTRLLEVEL 3 COMMUNICATIONS, LLC - CA12/01/2015
(628) 236-📱WirelessNOVATOT-MOBILE USA, INC.02/04/2016
(628) 237-📱WirelessSAUSALITOT-MOBILE USA, INC.03/04/2016
(628) 238-💻VoIPIGNACIOPEERLESS NETWORK OF CALIFORNIA, LLC - CAN/A
(628) 239-💻VoIPSNFC JUNPRBANDWIDTH.COM CLEC, LLC - CA07/22/2016
(628) 240-📱WirelessSAN RAFAELMETROPCS, INC.09/20/2017
(628) 241-📱WirelessSNFC JUNPRT-MOBILE USA, INC.07/01/2016
(628) 242-📞LandlineSNFC CNTRLPACIFIC BELL04/10/2015
(628) 243-💻VoIPSAN RAFAELONVOY, LLC - CA12/01/2015
(628) 244-💻VoIPBELVEDEREPEERLESS NETWORK OF CALIFORNIA, LLC - CA08/22/2016
(628) 245-💻VoIPMILLVALLEYONVOY, LLC - CA07/14/2016
(628) 246-💻VoIPSNFC CNTRLBANDWIDTH.COM CLEC, LLC - CA07/22/2016
(628) 247-📞LandlineSNFC CNTRLTELEPORT COMMUNICATIONS AMERICA, LLC - CA07/19/2016
(628) 248-📞LandlineSNFC MT-EVTELEPORT COMMUNICATIONS AMERICA, LLC - CA07/19/2016
(628) 249-📱WirelessSNFC CNTRLCELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA02/03/2017

Frequently Asked Questions about Area Code 628

Where is area code 628 located?

Area code 628 is located in California (United States), serving cities like San Francisco, South San Francisco, San Rafael, Novato, Mill Valley, Larkspur, San Anselmo, Corte Madera, Tiburon, Fairfax.

What timezone is area code 628?

Area code 628 operates in the Pacific timezone.

What state is area code 628?

Area code 628 is assigned to the state / telecom territory of California.

Is area code 628 a scam or dangerous?

Area code 628 is an official geographic area code for California. However, beware of robocaller spoofing.

California State Area Codes

View complete directory of telephone area codes assigned to California.

Explore California Directory

Get a 628 Business Phone Number

How to acquire a virtual phone number or business line with area code 628 for local customer trust in California.

Get 628 Business Number
🛡️ Scam & Safety Directory

Check high-risk international callback scam area codes and robocall warning databases.

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Overlay & Nearby Area Codes for California

Explore neighboring telecom prefixes sharing geographical boundaries with area code 628.

415
Pacific
Area Code 415
San Francisco, South San Francisco, San Rafael, Novato, Mill Valley, Larkspur, San Anselmo, Corte Madera, Tiburon, Fairfax
209
Pacific
Area Code 209
Stockton, Modesto, Tracy, Merced, Manteca, Turlock, Lodi, Los Banos, Ceres, Lathrop
213
Pacific
Area Code 213
Los Angeles, Montebello, Commerce, Vernon
279
Pacific
Area Code 279
Sacramento, Elk Grove, Roseville, Folsom, Rancho Cordova, Citrus Heights, Rocklin, Lincoln, West Sacramento, Loomis
310
Pacific
Area Code 310
Torrance, Inglewood, Carson, Compton, Santa Monica, South Gate, Hawthorne, Redondo Beach, Lynwood, Gardena
323
Pacific
Area Code 323
Los Angeles, South Gate, Montebello, Huntington Park, Bell Gardens, Commerce, Vernon