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Area Code 628

Area code 628 is in California, USA , spanning 2 counties and serving 26 cities, including San Francisco, Mill Valley or San Anselmo; it currently uses 184 prefixes, assigned from 628-200-XXXX through 628-999-XXXX.

In service since March 21, 2015, area code 628 is an overlay Numbering Plan Area, part of overlay complex 415/628.

The current local time is .

628 area code location on a map
© OpenStreetMap contributors
For exact NPA boundaries see official 628 area code map

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More California area codes:

Locate any 628-NXX prefix:

NPANXX Area Served1 Date2
628-200 San Francisco N/A
628-201 San Francisco 12/1/2015
628-202 Belvedere 4/1/2016
628-203 Stinson Beach/ Bolinas 6/27/2016
628-204 Nicasio 7/1/2016
628-205 San Francisco 7/27/2016
628-206 San Francisco 6/2/2015
628-207 San Francisco [Montrose/ Evergreen] 7/29/2016
628-208 San Francisco 8/9/2016
628-209 Novato 12/15/2016
628-210 Inverness 9/19/2016
628-212 Corte Madera 9/20/2016
628-213 San Francisco 12/1/2016
628-214 Novato 9/20/2016
628-215 Mill Valley 9/20/2016
628-216 Point Reyes 9/20/2016
628-217 San Francisco 8/22/2016
628-218 San Francisco 6/16/2017
628-219 San Francisco [Montrose/ Evergreen] 7/27/2017
628-220 San Francisco 2/12/2016
628-221 San Francisco 7/14/2015
628-222 San Francisco 9/29/2014
628-223 San Francisco 9/16/2015
628-224 San Francisco [Montrose/ Evergreen] 10/2/2015
628-225 San Francisco 10/2/2015
628-226 Belvedere 11/13/2015
628-227 San Francisco [Montrose/ Evergreen] N/A
628-228 San Francisco 2/18/2016
628-229 Point Reyes 4/29/2016
628-230 San Francisco 1/18/2018
628-231 San Francisco 10/27/2015
628-232 Inverness 10/7/2014
628-233 San Francisco 10/5/2015
628-234 San Rafael 3/13/2015
628-235 San Francisco 12/1/2015
628-236 Novato 2/4/2016
628-237 Sausalito 3/4/2016
628-238 Ignacio N/A
628-239 San Francisco 7/22/2016
628-240 San Rafael 9/20/2017
628-241 San Francisco 7/1/2016
628-242 San Francisco 4/10/2015
628-243 San Rafael 12/1/2015
628-244 Belvedere 8/22/2016
628-245 Mill Valley 7/14/2016
628-246 San Francisco 7/22/2016
628-247 San Francisco 7/19/2016
628-248 San Francisco [Montrose/ Evergreen] 7/19/2016
628-249 San Francisco 2/3/2017
628-250 San Francisco 10/4/2017
628-251 San Francisco 10/17/2016
628-252 Corte Madera 7/1/2016
628-253 San Rafael 7/25/2016
628-254 Sausalito 8/23/2016
628-255 San Francisco 2/10/2017
628-256 San Francisco [Montrose/ Evergreen] 10/17/2016
628-257 Mill Valley 10/28/2016
628-258 Nicasio 10/19/2017
628-259 Ignacio 10/26/2017
628-260 San Francisco 1/29/2018
628-261 Sausalito N/A
628-262 Belvedere 2/23/2018
628-263 San Francisco 5/15/2018
628-264 San Francisco 12/5/2018
628-265 Inverness 2/6/2019
628-266 Corte Madera 3/11/2019
628-267 San Francisco 7/24/2019
628-268 San Francisco 8/26/2019
628-269 San Rafael 9/30/2019
628-270 San Francisco [Montrose/ Evergreen] 12/11/2018
628-271 San Francisco N/A
628-272 Point Reyes 10/4/2019
628-273 San Francisco 3/27/2018
628-274 San Francisco 3/27/2018
628-275 San Francisco 3/27/2018
628-276 San Francisco 1/11/2021
628-277 San Rafael 1/29/2021
628-278 San Francisco [Montrose/ Evergreen] 1/10/2022
628-279 Sausalito 11/5/2021
628-280 San Francisco [Montrose/ Evergreen] 5/1/2018
628-281 San Francisco 01/11/2023
628-282 San Francisco [Juniper] 1/14/2022
628-283 San Francisco [Montrose/ Evergreen] 1/7/2022
628-284 San Francisco 6/17/2022
628-285 San Rafael 8/30/2022
628-286 San Francisco [Montrose/ Evergreen] 2/3/2020
628-287 San Francisco 04/07/2023
628-288 Mill Valley 3/19/2019
628-289 San Francisco 05/26/2023
628-290 San Francisco [Juniper] 07/13/2023
628-291 Mill Valley 08/04/2023
628-292 Belvedere 08/09/2023
628-293 Nicasio 08/09/2023
628-294 Novato 09/13/2023
628-295 San Rafael 09/19/2023
628-296 San Francisco [Montrose/ Evergreen] 10/02/2023
628-297 San Francisco [Montrose/ Evergreen] 02/21/2024
628-298 San Francisco [Juniper] 02/29/2024
628-299 San Francisco 7/8/2021
NPANXX Area Served1 Date2
628-300 San Francisco 3/17/2015
628-301 Novato 03/06/2024
628-302 Corte Madera 03/06/2024
628-303 San Francisco 03/18/2024
628-304 San Francisco [Juniper] 05/01/2024
628-305 San Rafael 05/22/2024
628-306 San Francisco 05/31/2024
628-307 Ignacio 06/12/2024
628-308 San Francisco [Montrose/ Evergreen] 07/30/2024
628-309 San Francisco 07/30/2024
628-310 Belvedere 04/03/2024
628-312 San Francisco 08/30/2024
628-313 San Rafael 11/3/2021
628-314 San Rafael 09/12/2024
628-315 Belvedere 09/25/2024
628-316 San Francisco 10/09/2024
628-321 San Francisco 9/15/2022
628-322 San Francisco 9/15/2022
628-323 San Francisco 9/15/2022
628-324 San Francisco 9/15/2022
628-325 San Francisco 9/15/2022
628-326 San Francisco 9/15/2022
628-333 San Francisco N/A
628-336 San Rafael 3/19/2019
628-338 San Francisco [Montrose/ Evergreen] 10/16/2023
628-345 Point Reyes 8/25/2020
628-348 Belvedere 7/10/2020
628-356 Nicasio 11/22/2019
628-358 San Francisco 9/24/2021
628-363 San Francisco 3/6/2018
628-377 Ignacio 7/15/2021
628-386 Corte Madera 5/24/2022
628-388 Inverness 1/27/2021
628-399 San Francisco [Montrose/ Evergreen] 1/27/2021
NPANXX Area Served1 Date2
628-400 San Francisco 10/1/2014
628-432 San Francisco [Montrose/ Evergreen] 9/17/2020
628-433 Ignacio 3/11/2019
628-444 San Francisco 9/30/2014
628-465 Sausalito 5/20/2019
628-466 San Francisco 4/6/2021
628-468 San Francisco 5/25/2021
628-477 Mill Valley 2/8/2021
628-488 San Francisco 2/22/2022
NPANXX Area Served1 Date2
628-500 San Rafael 3/26/2015
628-502 San Francisco 11/9/2017
628-529 San Francisco 5/20/2019
628-561 Stinson Beach/ Bolinas 2/15/2018
628-577 Nicasio 7/15/2021
628-587 Novato 6/17/2021
628-588 San Francisco 2/9/2021
NPANXX Area Served1 Date2
628-600 San Francisco 10/1/2014
628-626 San Francisco 11/4/2022
628-628 San Francisco 3/19/2019
628-629 San Francisco 12/19/2018
628-652 San Francisco 1/4/2018
628-666 Ignacio N/A
628-667 San Rafael 11/17/2020
628-677 Mill Valley 7/15/2021
628-682 Novato 8/27/2020
628-688 San Francisco 7/10/2020
628-699 Sausalito 7/15/2021
NPANXX Area Served1 Date2
628-724 Belvedere 11/16/2020
628-726 San Francisco 06/20/2024
628-732 San Francisco 7/10/2020
628-754 San Francisco [Montrose/ Evergreen] 02/13/2023
628-758 San Francisco [Montrose/ Evergreen] 3/19/2019
628-766 Stinson Beach/ Bolinas 7/10/2020
628-777 San Francisco [Montrose/ Evergreen] N/A
628-786 San Francisco 11/3/2020
628-788 San Francisco [Montrose/ Evergreen] 2/9/2021
628-789 San Francisco 5/27/2022
NPANXX Area Served1 Date2
628-800 San Francisco 10/1/2014
628-842 Corte Madera 8/25/2020
628-866 Belvedere 7/15/2021
628-867 San Francisco 3/24/2017
628-877 Corte Madera 2/15/2016
628-888 San Rafael N/A
628-895 San Francisco 2/3/2017
628-899 San Francisco [Montrose/ Evergreen] 2/29/2016
NPANXX Area Served1 Date2
628-900 San Francisco N/A
628-946 San Francisco 9/17/2020
628-977 San Francisco [Montrose/ Evergreen] 7/10/2020
628-997 San Francisco 04/18/2024
628-998 San Francisco 03/06/2024
628-999 San Francisco N/A
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. Assignment date. N/A - mostly central office codes assigned before 2001.
  3. NXX prefixes last updated: November 22, 2024

Cities in area code 628

City1 County Time Zone2
Belvedere Tiburon Marin P
Bolinas Marin P
Corte Madera Marin P
Fairfax Marin P
Forest Knolls Marin P
Greenbrae Marin P
Inverness Marin P
Kentfield Marin P
Lagunitas Marin P
Larkspur Marin P
Marin City Marin P
Marshall Marin P
Mill Valley Marin P
Nicasio Marin P
Novato Marin P
Olema Marin P
Point Reyes Station Marin P
Ross Marin P
San Anselmo Marin P
San Francisco San Francisco P
San Geronimo Marin P
San Quentin Marin P
San Rafael Marin P
Sausalito Marin P
Stinson Beach Marin P
Woodacre Marin P
  1. Listed above are most places served by USA area code 628. When multiple places in a US state share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. P stands for Pacific Time (currently ).
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