628 Area Code: Location, Cities, Map And Time Zone
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© OpenStreetMap contributorsFor exact NPA boundaries see official 628 area code map
628-300-XXXX --- 628-399-XXXX
628-400-XXXX --- 628-488-XXXX
628-500-XXXX --- 628-588-XXXX
628-600-XXXX --- 628-699-XXXX
628-724-XXXX --- 628-789-XXXX
628-800-XXXX --- 628-899-XXXX
628-900-XXXX --- 628-999-XXXX
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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 192 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 .
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More California area codes:
- 209
- 213
- 279
- 310
- 323
- 341
- 350
- 357
- 369
- 408
- 415
- 424
- 442
- 510
- 530
- 559
- 562
- 619
- 626
- 650
- 657
- 661
- 669
- 707
- 714
- 738
- 747
- 760
- 805
- 818
- 820
- 831
- 837
- 840
- 858
- 909
- 916
- 925
- 949
- 951
Locate any 628-NXX prefix:
628-200-XXXX --- 628-299-XXXX| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-200 | San Francisco | Multiple | N/A |
| 628-201 | San Francisco | Multiple | 12/1/2015 |
| 628-202 | Belvedere | Multiple | 4/1/2016 |
| 628-203 | Stinson Beach-Bolinas | Multiple | 6/27/2016 |
| 628-204 | Nicasio | Multiple | 7/1/2016 |
| 628-205 | San Francisco | Cellco Partnership | 7/27/2016 |
| 628-206 | San Francisco | Pacific Bell | 6/2/2015 |
| 628-207 | San Francisco [Montrose-Evergreen] | Multiple | 7/29/2016 |
| 628-208 | San Francisco | Multiple | 8/9/2016 |
| 628-209 | Novato | Multiple | 12/15/2016 |
| 628-210 | Inverness | Multiple | 9/19/2016 |
| 628-212 | Corte Madera | Multiple | 9/20/2016 |
| 628-213 | San Francisco | Multiple | 12/1/2016 |
| 628-214 | Novato | Multiple | 9/20/2016 |
| 628-215 | Mill Valley | Multiple | 9/20/2016 |
| 628-216 | Point Reyes | Multiple | 9/20/2016 |
| 628-217 | San Francisco | Multiple | 8/22/2016 |
| 628-218 | San Francisco | Multiple | 6/16/2017 |
| 628-219 | San Francisco [Montrose-Evergreen] | Multiple | 7/27/2017 |
| 628-220 | San Francisco | Multiple | 2/12/2016 |
| 628-221 | San Francisco | Multiple | 7/14/2015 |
| 628-222 | San Francisco | Multiple | 9/29/2014 |
| 628-223 | San Francisco | Multiple | 9/16/2015 |
| 628-224 | San Francisco [Montrose-Evergreen] | Multiple | 10/2/2015 |
| 628-225 | San Francisco | Multiple | 10/2/2015 |
| 628-226 | Belvedere | Multiple | 11/13/2015 |
| 628-227 | San Francisco [Montrose-Evergreen] | Multiple | N/A |
| 628-228 | San Francisco | Multiple | 2/18/2016 |
| 628-229 | Point Reyes | Multiple | 4/29/2016 |
| 628-230 | San Francisco | Multiple | 1/18/2018 |
| 628-231 | San Francisco | Multiple | 10/27/2015 |
| 628-232 | Inverness | Multiple | 10/7/2014 |
| 628-233 | San Francisco | Multiple | 10/5/2015 |
| 628-234 | San Rafael | Multiple | 3/13/2015 |
| 628-235 | San Francisco | Multiple | 12/1/2015 |
| 628-236 | Novato | Multiple | 2/4/2016 |
| 628-237 | Sausalito | Multiple | 3/4/2016 |
| 628-238 | Ignacio | Multiple | N/A |
| 628-239 | San Francisco | Multiple | 7/22/2016 |
| 628-240 | San Rafael | Multiple | 9/20/2017 |
| 628-241 | San Francisco | Multiple | 7/1/2016 |
| 628-242 | San Francisco | Multiple | 4/10/2015 |
| 628-243 | San Rafael | Multiple | 12/1/2015 |
| 628-244 | Belvedere | Multiple | 8/22/2016 |
| 628-245 | Mill Valley | Multiple | 7/14/2016 |
| 628-246 | San Francisco | Multiple | 7/22/2016 |
| 628-247 | San Francisco | Teleport Communications America | 7/19/2016 |
| 628-248 | San Francisco [Montrose-Evergreen] | Teleport Communications America | 7/19/2016 |
| 628-249 | San Francisco | Cellco Partnership | 2/3/2017 |
| 628-250 | San Francisco | Multiple | 10/4/2017 |
| 628-251 | San Francisco | Multiple | 10/17/2016 |
| 628-252 | Corte Madera | Multiple | 7/1/2016 |
| 628-253 | San Rafael | Multiple | 7/25/2016 |
| 628-254 | Sausalito | Multiple | 8/23/2016 |
| 628-255 | San Francisco | Cellco Partnership | 2/10/2017 |
| 628-256 | San Francisco [Montrose-Evergreen] | Multiple | 10/17/2016 |
| 628-257 | Mill Valley | Multiple | 10/28/2016 |
| 628-258 | Nicasio | Multiple | 10/19/2017 |
| 628-259 | Ignacio | Multiple | 10/26/2017 |
| 628-260 | San Francisco | Multiple | 1/29/2018 |
| 628-261 | Sausalito | Multiple | N/A |
| 628-262 | Belvedere | Multiple | 2/23/2018 |
| 628-263 | San Francisco | Multiple | 5/15/2018 |
| 628-264 | San Francisco | Multiple | 12/5/2018 |
| 628-265 | Inverness | Multiple | 2/6/2019 |
| 628-266 | Corte Madera | Multiple | 3/11/2019 |
| 628-267 | San Francisco | Multiple | 7/24/2019 |
| 628-268 | San Francisco | Multiple | 8/26/2019 |
| 628-269 | San Rafael | Multiple | 9/30/2019 |
| 628-270 | San Francisco [Montrose-Evergreen] | Multiple | 12/11/2018 |
| 628-271 | San Francisco | Multiple | N/A |
| 628-272 | Point Reyes | Multiple | 10/4/2019 |
| 628-273 | San Francisco | Level 3 Communications | 3/27/2018 |
| 628-274 | San Francisco | Level 3 Communications | 3/27/2018 |
| 628-275 | San Francisco | Level 3 Communications | 3/27/2018 |
| 628-276 | San Francisco | Whitesky Communications | 1/11/2021 |
| 628-277 | San Rafael | Multiple | 1/29/2021 |
| 628-278 | San Francisco [Montrose-Evergreen] | Multiple | 1/10/2022 |
| 628-279 | Sausalito | Multiple | 11/5/2021 |
| 628-280 | San Francisco [Montrose-Evergreen] | Multiple | 5/1/2018 |
| 628-281 | San Francisco | Multiple | 01/11/2023 |
| 628-282 | San Francisco [Juniper] | Multiple | 1/14/2022 |
| 628-283 | San Francisco [Montrose-Evergreen] | Multiple | 1/7/2022 |
| 628-284 | San Francisco | Multiple | 6/17/2022 |
| 628-285 | San Rafael | Multiple | 8/30/2022 |
| 628-286 | San Francisco [Montrose-Evergreen] | Multiple | 2/3/2020 |
| 628-287 | San Francisco | Multiple | 04/07/2023 |
| 628-288 | Mill Valley | Multiple | 3/19/2019 |
| 628-289 | San Francisco | Multiple | 05/26/2023 |
| 628-290 | San Francisco [Juniper] | Multiple | 07/13/2023 |
| 628-291 | Mill Valley | Multiple | 08/04/2023 |
| 628-292 | Belvedere | Multiple | 08/09/2023 |
| 628-293 | Nicasio | Multiple | 08/09/2023 |
| 628-294 | Novato | Multiple | 09/13/2023 |
| 628-295 | San Rafael | Multiple | 09/19/2023 |
| 628-296 | San Francisco [Montrose-Evergreen] | Onvoy | 10/02/2023 |
| 628-297 | San Francisco [Montrose-Evergreen] | Multiple | 02/21/2024 |
| 628-298 | San Francisco [Juniper] | Multiple | 02/29/2024 |
| 628-299 | San Francisco | Multiple | 7/8/2021 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-300 | San Francisco | Multiple | 3/17/2015 |
| 628-301 | Novato | Multiple | 03/06/2024 |
| 628-302 | Corte Madera | Multiple | 03/06/2024 |
| 628-303 | San Francisco | Multiple | 03/18/2024 |
| 628-304 | San Francisco [Juniper] | Multiple | 05/01/2024 |
| 628-305 | San Rafael | Multiple | 05/22/2024 |
| 628-306 | San Francisco | T-Mobile USA | 05/31/2024 |
| 628-307 | Ignacio | Multiple | 06/12/2024 |
| 628-308 | San Francisco [Montrose-Evergreen] | Multiple | 07/30/2024 |
| 628-309 | San Francisco | T-Mobile USA | 07/30/2024 |
| 628-310 | Belvedere | Multiple | 04/03/2024 |
| 628-312 | San Francisco | Multiple | 08/30/2024 |
| 628-313 | San Rafael | Multiple | 11/3/2021 |
| 628-314 | San Rafael | Shelcomm | 09/12/2024 |
| 628-315 | Belvedere | T-Mobile USA | 09/25/2024 |
| 628-316 | San Francisco | Multiple | 10/09/2024 |
| 628-317 | San Francisco [Montrose-Evergreen] | New Cingular Wireless PCS | 11/21/2024 |
| 628-318 | San Francisco [Montrose-Evergreen] | New Cingular Wireless PCS | 11/21/2024 |
| 628-319 | San Francisco [Juniper] | New Cingular Wireless PCS | 01/13/2025 |
| 628-320 | San Francisco [Montrose-Evergreen] | Multiple | 01/28/2025 |
| 628-321 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-322 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-323 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-324 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-325 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-326 | San Francisco | Teleport Communications America | 9/15/2022 |
| 628-327 | San Rafael | Multiple | 09/03/2025 |
| 628-328 | San Francisco | Teleport Communications America | 02/18/2025 |
| 628-329 | Sausalito | T-Mobile USA | 11/06/2025 |
| 628-333 | San Francisco | Multiple | N/A |
| 628-335 | San Francisco | Teleport Communications America | 04/28/2025 |
| 628-336 | San Rafael | Multiple | 3/19/2019 |
| 628-338 | San Francisco [Montrose-Evergreen] | Multiple | 10/16/2023 |
| 628-345 | Point Reyes | Multiple | 8/25/2020 |
| 628-348 | Belvedere | Multiple | 7/10/2020 |
| 628-356 | Nicasio | Multiple | 11/22/2019 |
| 628-358 | San Francisco | Multiple | 9/24/2021 |
| 628-363 | San Francisco | Multiple | 3/6/2018 |
| 628-377 | Ignacio | Multiple | 7/15/2021 |
| 628-386 | Corte Madera | Multiple | 5/24/2022 |
| 628-388 | Inverness | Multiple | 1/27/2021 |
| 628-399 | San Francisco [Montrose-Evergreen] | Multiple | 1/27/2021 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-400 | San Francisco | Multiple | 10/1/2014 |
| 628-432 | San Francisco [Montrose-Evergreen] | Multiple | 9/17/2020 |
| 628-433 | Ignacio | Multiple | 3/11/2019 |
| 628-444 | San Francisco | Multiple | 9/30/2014 |
| 628-465 | Sausalito | Multiple | 5/20/2019 |
| 628-466 | San Francisco | Multiple | 4/6/2021 |
| 628-468 | San Francisco | Multiple | 5/25/2021 |
| 628-477 | Mill Valley | Multiple | 2/8/2021 |
| 628-488 | San Francisco | Multiple | 2/22/2022 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-500 | San Rafael | Onvoy | 3/26/2015 |
| 628-502 | San Francisco | Multiple | 11/9/2017 |
| 628-529 | San Francisco | Multiple | 5/20/2019 |
| 628-561 | Stinson Beach-Bolinas | Multiple | 2/15/2018 |
| 628-577 | Nicasio | Multiple | 7/15/2021 |
| 628-587 | Novato | Multiple | 6/17/2021 |
| 628-588 | San Francisco | Multiple | 2/9/2021 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-600 | San Francisco | Multiple | 10/1/2014 |
| 628-626 | San Francisco | Multiple | 11/4/2022 |
| 628-628 | San Francisco | Multiple | 3/19/2019 |
| 628-629 | San Francisco | Multiple | 12/19/2018 |
| 628-652 | San Francisco | Teleport Communications America | 1/4/2018 |
| 628-666 | Ignacio | Multiple | N/A |
| 628-667 | San Rafael | Multiple | 11/17/2020 |
| 628-677 | Mill Valley | Multiple | 7/15/2021 |
| 628-682 | Novato | Multiple | 8/27/2020 |
| 628-688 | San Francisco | Multiple | 7/10/2020 |
| 628-699 | Sausalito | Multiple | 7/15/2021 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-724 | Belvedere | Multiple | 11/16/2020 |
| 628-726 | San Francisco | Multiple | 06/20/2024 |
| 628-732 | San Francisco | Multiple | 7/10/2020 |
| 628-754 | San Francisco [Montrose-Evergreen] | Teleport Communications America | 02/13/2023 |
| 628-758 | San Francisco [Montrose-Evergreen] | Multiple | 3/19/2019 |
| 628-766 | Stinson Beach-Bolinas | Multiple | 7/10/2020 |
| 628-777 | San Francisco [Montrose-Evergreen] | Multiple | N/A |
| 628-786 | San Francisco | Multiple | 11/3/2020 |
| 628-788 | San Francisco [Montrose-Evergreen] | Multiple | 2/9/2021 |
| 628-789 | San Francisco | Multiple | 5/27/2022 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-800 | San Francisco | Multiple | 10/1/2014 |
| 628-842 | Corte Madera | Multiple | 8/25/2020 |
| 628-866 | Belvedere | Multiple | 7/15/2021 |
| 628-867 | San Francisco | Multiple | 3/24/2017 |
| 628-877 | Corte Madera | Multiple | 2/15/2016 |
| 628-888 | San Rafael | Multiple | N/A |
| 628-895 | San Francisco | Multiple | 2/3/2017 |
| 628-899 | San Francisco [Montrose-Evergreen] | Multiple | 2/29/2016 |
| NPANXX | Area served[1] | Provider[2] | Date[3] |
|---|---|---|---|
| 628-900 | San Francisco | Onvoy | N/A |
| 628-946 | San Francisco | Multiple | 9/17/2020 |
| 628-977 | San Francisco [Montrose-Evergreen] | Multiple | 7/10/2020 |
| 628-997 | San Francisco | Multiple | 04/18/2024 |
| 628-998 | San Francisco | Multiple | 03/06/2024 |
| 628-999 | San Francisco | Multiple | N/A |
- 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.
- A single provider refers to the original company controlling a whole NPA-NXX block (10,000 phone numbers). With Number Pooling, NPA-NXX blocks can be split into ten 1,000 phone number blocks and handed over to other service providers (available in the USA and Puerto Rico).
- Assignment date. N/A: unavailable date or central office code assigned before 2001.
- NXX prefixes last updated: February 13, 2026
Cities in area code 628
| City1 | County | Time zone1 |
|---|---|---|
| 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 |
- 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.
- P stands for Pacific Time (currently ).
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