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 189 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 .
For exact NPA boundaries see official 628 area code map
Phone number lookup
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 |
| 628-317 | San Francisco [Montrose/ Evergreen] | 11/21/2024 |
| 628-318 | San Francisco [Montrose/ Evergreen] | 11/21/2024 |
| 628-319 | San Francisco [Juniper] | 01/13/2025 |
| 628-320 | San Francisco [Montrose/ Evergreen] | 01/28/2025 |
| 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 |
| 628-328 | San Francisco | 02/18/2025 |
| 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 |
|---|---|---|
| 628-600 | 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 |
- 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.
- Assignment date. N/A - mostly central office codes assigned before 2001.
- NXX prefixes last updated: March 1st, 2025
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 |
- 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 ).