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Area Code 925

Area code 925 is in California, USA , spanning 2 counties and serving 25 cities, including Concord, Antioch or Livermore; it currently uses 627 prefixes, assigned from 925-200-XXXX through 925-999-XXXX.

In service date for area code 925: March 14, 1998.

The current local time is .

925 area code location on a map
© OpenStreetMap contributors
For exact NPA boundaries see official 925 area code map

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More California area codes:

Locate any 925-NXX prefix:

NPANXX Area Served1 Date2
925-200 Pleasanton N/A
925-201 Pleasanton N/A
925-202 Pleasanton N/A
925-203 Pittsburg 2/22/2002
925-204 Antioch 9/22/2015
925-205 Danville 08/16/2023
925-206 Antioch 8/29/2007
925-207 Concord 10/18/2001
925-208 Danville N/A
925-209 Pleasanton N/A
925-210 Walnut Creek N/A
925-212 Walnut Creek N/A
925-213 Walnut Creek N/A
925-214 Walnut Creek 9/10/2016
925-215 Livermore N/A
925-216 Dublin/ San Ramon N/A
925-217 Danville N/A
925-218 Pleasanton N/A
925-219 Antioch N/A
925-220 Pittsburg 10/02/2023
925-221 Walnut Creek N/A
925-222 Concord N/A
925-223 Pleasanton N/A
925-224 Pleasanton N/A
925-225 Pleasanton N/A
925-226 Pleasanton N/A
925-227 Pleasanton N/A
925-228 Martinez N/A
925-229 Martinez N/A
925-230 Dublin/ San Ramon N/A
925-231 Martinez N/A
925-232 Pittsburg West N/A
925-233 Sunol N/A
925-234 Antioch N/A
925-235 Moraga N/A
925-236 Dublin/ San Ramon N/A
925-237 Antioch N/A
925-238 Antioch 10/31/2008
925-239 Walnut Creek 3/25/2013
925-240 East Contra Costa N/A
925-241 Dublin/ San Ramon N/A
925-242 Bishop Ranch N/A
925-243 Livermore N/A
925-244 Bishop Ranch N/A
925-245 Livermore N/A
925-246 Concord N/A
925-247 Moraga N/A
925-248 Dublin/ San Ramon N/A
925-249 Pleasanton N/A
925-250 Concord N/A
925-251 Pleasanton N/A
925-252 Pittsburg N/A
925-253 Orinda N/A
925-254 Orinda N/A
925-255 Orinda N/A
925-256 Walnut Creek N/A
925-257 Orinda N/A
925-258 Orinda N/A
925-259 Orinda N/A
925-260 Walnut Creek N/A
925-261 Pittsburg West N/A
925-262 Walnut Creek N/A
925-263 Danville N/A
925-264 Pleasanton N/A
925-265 Concord N/A
925-266 Walnut Creek 5/2/2016
925-267 Pittsburg N/A
925-268 Moraga N/A
925-269 Martinez N/A
925-270 Concord N/A
925-271 Pleasanton N/A
925-272 Danville N/A
925-273 Livermore N/A
925-274 Walnut Creek N/A
925-275 Bishop Ranch N/A
925-276 Clayton N/A
925-277 Bishop Ranch N/A
925-278 Walnut Creek 10/24/2013
925-279 Walnut Creek N/A
925-280 Walnut Creek N/A
925-281 Antioch N/A
925-282 Lafayette N/A
925-283 Lafayette N/A
925-284 Lafayette N/A
925-285 Walnut Creek N/A
925-286 Walnut Creek N/A
925-287 Walnut Creek N/A
925-288 Concord N/A
925-289 Walnut Creek 2/23/2009
925-290 Livermore N/A
925-291 Pittsburg West N/A
925-292 Livermore N/A
925-293 Martinez N/A
925-294 Livermore N/A
925-295 Walnut Creek N/A
925-296 Walnut Creek N/A
925-297 Lafayette N/A
925-298 Lafayette N/A
925-299 Lafayette N/A
NPANXX Area Served1 Date2
925-300 Walnut Creek N/A
925-301 Antioch N/A
925-302 Bishop Ranch N/A
925-303 Antioch N/A
925-304 Clayton N/A
925-305 Concord N/A
925-306 East Contra Costa 1/13/2017
925-307 Dublin/ San Ramon N/A
925-308 East Contra Costa N/A
925-309 Danville N/A
925-310 Lafayette N/A
925-312 Antioch N/A
925-313 Martinez N/A
925-314 Danville N/A
925-315 Livermore N/A
925-316 Martinez N/A
925-317 Orinda N/A
925-318 Pittsburg N/A
925-319 Sunol N/A
925-320 Moraga 3/27/2001
925-321 Livermore 11/30/2001
925-322 Walnut Creek 5/10/2011
925-323 Walnut Creek N/A
925-324 Walnut Creek 8/21/2002
925-325 Antioch 12/28/2001
925-326 Concord N/A
925-327 Bishop Ranch N/A
925-328 Bishop Ranch N/A
925-329 Antioch 9/8/2014
925-330 Walnut Creek 11/30/2001
925-331 Antioch 7/17/2001
925-332 Concord 10/4/2012
925-333 Walnut Creek N/A
925-334 Concord 7/19/2011
925-335 Martinez N/A
925-336 Dublin/ San Ramon 12/28/2001
925-337 Livermore 1/28/2002
925-338 Concord 7/22/2011
925-339 Livermore 9/21/2001
925-340 Walnut Creek N/A
925-341 Livermore 4/21/2020
925-342 Walnut Creek 12/07/2023
925-343 Pleasanton N/A
925-344 Livermore N/A
925-345 Danville N/A
925-346 Concord N/A
925-347 Livermore N/A
925-348 Concord 1/28/2002
925-349 Concord N/A
925-350 Antioch 9/13/2011
925-351 Pleasanton N/A
925-352 Pleasanton N/A
925-353 Pleasanton 1/28/2002
925-354 Antioch 1/28/2002
925-355 Bishop Ranch N/A
925-356 Concord N/A
925-357 Walnut Creek 9/13/2011
925-358 Bishop Ranch N/A
925-359 Bishop Ranch N/A
925-360 Walnut Creek N/A
925-361 Dublin/ San Ramon N/A
925-362 Danville N/A
925-363 Concord N/A
925-364 Dublin/ San Ramon N/A
925-365 Bishop Ranch N/A
925-366 Pleasanton N/A
925-367 Pleasanton N/A
925-368 Pleasanton N/A
925-369 Martinez N/A
925-370 Martinez N/A
925-371 Livermore N/A
925-372 Martinez N/A
925-373 Livermore N/A
925-374 Martinez N/A
925-375 Concord 6/29/2016
925-376 Moraga N/A
925-377 Moraga N/A
925-378 Walnut Creek 12/11/2014
925-379 Pleasanton 11/10/2014
925-380 Bishop Ranch N/A
925-381 Concord N/A
925-382 Antioch N/A
925-383 Concord N/A
925-384 Antioch 12/5/2014
925-385 Lafayette N/A
925-386 Orinda N/A
925-387 Martinez N/A
925-388 Moraga N/A
925-389 Danville 11/30/2001
925-390 East Contra Costa 4/11/2016
925-391 Concord 11/25/2013
925-392 East Contra Costa N/A
925-393 Walnut Creek 6/16/2015
925-394 Bishop Ranch N/A
925-395 Walnut Creek N/A
925-396 Pleasanton N/A
925-397 Pleasanton N/A
925-398 Pleasanton N/A
925-399 Pleasanton N/A
NPANXX Area Served1 Date2
925-400 Pleasanton N/A
925-401 Pleasanton N/A
925-402 Orinda N/A
925-403 Lafayette N/A
925-404 Dublin/ San Ramon N/A
925-405 Concord N/A
925-406 Danville N/A
925-407 Walnut Creek N/A
925-408 Concord N/A
925-409 Livermore 8/18/2017
925-410 Pleasanton 7/14/2020
925-412 Concord 11/19/2018
925-413 Dublin/ San Ramon N/A
925-414 Concord 7/31/2019
925-415 Bishop Ranch N/A
925-416 Pleasanton N/A
925-417 Pleasanton N/A
925-418 East Contra Costa N/A
925-419 Concord 10/02/2023
925-420 East Contra Costa N/A
925-421 Concord 1/27/2012
925-422 Livermore N/A
925-423 Livermore N/A
925-424 Livermore N/A
925-425 Pleasanton N/A
925-426 Pleasanton N/A
925-427 Pittsburg N/A
925-428 Antioch 4/19/2013
925-429 Concord N/A
925-430 Walnut Creek 10/9/2019
925-431 Pittsburg N/A
925-432 Pittsburg N/A
925-433 Walnut Creek 11/2/2015
925-434 Antioch N/A
925-435 Concord N/A
925-436 Antioch 8/30/2016
925-437 Antioch N/A
925-438 Orinda N/A
925-439 Pittsburg N/A
925-440 Walnut Creek 11/2/2018
925-441 Antioch 6/29/2022
925-443 Livermore N/A
925-444 Lafayette N/A
925-445 Antioch 4/5/2021
925-446 Concord 6/25/2012
925-447 Livermore N/A
925-448 Walnut Creek 4/28/2014
925-449 Livermore N/A
925-450 East Contra Costa 6/26/2020
925-451 Walnut Creek N/A
925-452 Dublin/ San Ramon N/A
925-453 Livermore N/A
925-454 Livermore N/A
925-455 Livermore N/A
925-456 Livermore N/A
925-457 Walnut Creek N/A
925-458 Pittsburg West N/A
925-459 Concord N/A
925-460 Pleasanton N/A
925-461 Pleasanton N/A
925-462 Pleasanton N/A
925-463 Pleasanton N/A
925-464 Walnut Creek 8/16/2012
925-465 Walnut Creek N/A
925-466 Concord 9/17/2020
925-467 Pleasanton N/A
925-468 Pleasanton N/A
925-469 Pleasanton N/A
925-470 Antioch N/A
925-471 Concord 8/25/2014
925-472 Walnut Creek N/A
925-473 Pittsburg N/A
925-474 Pleasanton N/A
925-475 Pleasanton N/A
925-476 Walnut Creek N/A
925-477 Antioch 1/18/2019
925-478 Walnut Creek N/A
925-479 Dublin/ San Ramon N/A
925-480 Bishop Ranch N/A
925-481 Antioch 3/24/2014
925-482 Walnut Creek N/A
925-483 Concord 4/23/2015
925-484 Pleasanton N/A
925-485 Pleasanton N/A
925-486 Danville 04/29/2024
925-487 Dublin/ San Ramon N/A
925-488 Walnut Creek 6/24/2019
925-489 Antioch 10/15/2020
925-490 Concord 5/23/2014
925-491 Antioch 10/02/2023
925-492 Pittsburg 9/24/2021
925-493 Livermore N/A
925-494 Concord 4/16/2015
925-495 Livermore 8/2/2016
925-496 Concord 12/23/2021
925-497 Concord 8/22/2001
925-498 Bishop Ranch N/A
925-499 Concord 12/26/2017
NPANXX Area Served1 Date2
925-500 Martinez N/A
925-501 Antioch 5/17/2022
925-502 Danville 7/21/2022
925-503 Antioch 3/23/2017
925-504 Pittsburg West 12/16/2022
925-505 Livermore 7/28/2022
925-506 Antioch 01/19/2023
925-507 Concord 01/04/2023
925-508 East Contra Costa 03/31/2023
925-509 Bishop Ranch N/A
925-510 Concord 3/23/2018
925-512 Walnut Creek 10/02/2023
925-513 East Contra Costa N/A
925-514 Martinez 10/06/2023
925-515 Concord 11/11/2020
925-516 East Contra Costa N/A
925-517 Pittsburg West 5/18/2001
925-518 Livermore N/A
925-519 Pleasanton N/A
925-520 Pleasanton N/A
925-521 Concord N/A
925-522 Antioch N/A
925-523 Pleasanton N/A
925-524 Clayton N/A
925-525 Livermore N/A
925-526 Pittsburg N/A
925-527 Walnut Creek N/A
925-528 Orinda N/A
925-529 Antioch N/A
925-531 Lafayette 11/27/2023
925-532 Walnut Creek 3/17/2017
925-533 Livermore 9/17/2020
925-534 Livermore 8/6/2019
925-535 Pleasanton N/A
925-536 Concord 3/17/2017
925-537 Livermore 1/14/2022
925-538 Antioch 01/19/2024
925-539 Antioch 06/21/2024
925-540 Danville 11/20/2024
925-541 Livermore 09/12/2024
925-542 Walnut Creek 12/26/2017
925-543 Bishop Ranch N/A
925-546 Walnut Creek 1/7/2022
925-548 Dublin/ San Ramon N/A
925-549 Dublin/ San Ramon N/A
925-550 Antioch N/A
925-551 Dublin/ San Ramon N/A
925-552 Danville N/A
925-553 Danville N/A
925-556 Dublin/ San Ramon N/A
925-557 Dublin/ San Ramon N/A
925-558 Dublin/ San Ramon N/A
925-560 Dublin/ San Ramon N/A
925-565 Antioch 9/21/2001
925-566 Concord N/A
925-567 Clayton 7/17/2001
925-568 Sunol N/A
925-570 Dublin/ San Ramon N/A
925-571 Bishop Ranch N/A
925-572 Pleasanton N/A
925-573 Pittsburg N/A
925-574 Dublin/ San Ramon 6/27/2001
925-575 Danville N/A
925-577 Dublin/ San Ramon 9/19/2001
925-578 East Contra Costa 11/3/2020
925-579 Livermore 4/24/2001
925-580 Pleasanton N/A
925-583 Livermore N/A
925-584 Antioch N/A
925-586 Concord N/A
925-587 Dublin/ San Ramon N/A
925-588 Walnut Creek N/A
925-590 Bishop Ranch 6/23/2022
925-592 Moraga N/A
925-594 Danville 9/21/2001
925-595 Concord 5/18/2001
925-596 Pleasanton N/A
925-597 Pittsburg N/A
925-598 Pleasanton N/A
925-599 Livermore 1/27/2021
NPANXX Area Served1 Date2
925-600 Pleasanton N/A
925-602 Concord N/A
925-603 Concord N/A
925-605 Livermore N/A
925-606 Livermore N/A
925-608 Martinez 3/1/2001
925-609 Concord N/A
925-621 Pleasanton 4/26/2001
925-623 Pleasanton N/A
925-625 East Contra Costa N/A
925-626 East Contra Costa N/A
925-627 Walnut Creek 3/27/2001
925-628 Antioch N/A
925-631 Moraga N/A
925-633 Concord 8/5/2021
925-634 East Contra Costa N/A
925-635 Pittsburg N/A
925-639 Walnut Creek 10/18/2001
925-640 Dublin/ San Ramon N/A
925-642 Antioch N/A
925-643 Pittsburg West 5/21/2001
925-644 Concord 7/13/2021
925-646 Concord N/A
925-648 Danville N/A
925-655 Concord 3/20/2019
925-658 Walnut Creek N/A
925-659 Bishop Ranch N/A
925-660 Pleasanton N/A
925-663 Sunol N/A
925-664 Pittsburg West N/A
925-665 Pittsburg N/A
925-666 East Contra Costa N/A
925-667 Livermore 5/18/2001
925-671 Concord N/A
925-672 Clayton N/A
925-673 Clayton N/A
925-674 Concord N/A
925-675 Concord N/A
925-676 Concord N/A
925-677 Concord N/A
925-678 Danville N/A
925-679 East Contra Costa N/A
925-680 Concord N/A
925-681 Concord N/A
925-682 Concord N/A
925-683 Danville N/A
925-684 East Contra Costa N/A
925-685 Concord N/A
925-686 Concord N/A
925-687 Concord N/A
925-688 Concord N/A
925-689 Concord N/A
925-690 Clayton N/A
925-691 Concord N/A
925-692 Concord N/A
925-693 Clayton N/A
925-694 Pleasanton N/A
925-695 Concord N/A
925-698 Pittsburg N/A
925-699 Pleasanton N/A
NPANXX Area Served1 Date2
925-701 Pleasanton N/A
925-705 Walnut Creek 8/22/2001
925-706 Antioch N/A
925-708 Walnut Creek 1/26/2001
925-709 Pittsburg West N/A
925-718 Danville 1/26/2001
925-719 Dublin/ San Ramon 4/16/2002
925-722 Walnut Creek 7/7/2021
925-723 Martinez N/A
925-724 Livermore N/A
925-725 Danville N/A
925-726 Concord N/A
925-727 Antioch N/A
925-730 Pleasanton N/A
925-732 Antioch N/A
925-733 Danville 8/5/2021
925-734 Pleasanton N/A
925-735 Bishop Ranch N/A
925-736 Danville N/A
925-737 Pleasanton N/A
925-738 Pleasanton N/A
925-743 Danville N/A
925-744 Walnut Creek 11/13/2020
925-746 Walnut Creek N/A
925-750 Pleasanton N/A
925-752 Antioch N/A
925-753 Antioch N/A
925-754 Antioch N/A
925-755 Antioch N/A
925-756 Antioch N/A
925-757 Antioch N/A
925-758 Livermore 3/20/2019
925-759 Antioch N/A
925-762 Bishop Ranch N/A
925-765 Walnut Creek N/A
925-766 Walnut Creek N/A
925-768 Concord 6/25/2001
925-771 Concord 3/1/2001
925-775 Antioch N/A
925-776 Antioch N/A
925-777 Antioch N/A
925-778 Antioch N/A
925-779 Antioch N/A
925-783 Antioch N/A
925-784 Livermore N/A
925-785 Dublin/ San Ramon N/A
925-786 Bishop Ranch N/A
925-787 Concord N/A
925-788 Walnut Creek N/A
925-789 Sunol N/A
925-790 Bishop Ranch 1/26/2001
925-791 Danville 7/16/2001
925-794 Moraga 7/17/2001
925-798 Concord N/A
925-799 Pittsburg 3/20/2019
NPANXX Area Served1 Date2
925-800 Livermore N/A
925-803 Dublin/ San Ramon N/A
925-804 Bishop Ranch N/A
925-806 Bishop Ranch N/A
925-807 Bishop Ranch N/A
925-808 Concord N/A
925-809 East Contra Costa 3/1/2001
925-812 Martinez 9/21/2001
925-813 Antioch 8/21/2002
925-815 Bishop Ranch N/A
925-817 Walnut Creek N/A
925-818 Walnut Creek N/A
925-819 Dublin/ San Ramon N/A
925-820 Danville N/A
925-822 Concord N/A
925-823 Bishop Ranch N/A
925-824 Bishop Ranch N/A
925-825 Concord N/A
925-826 Concord N/A
925-827 Concord N/A
925-828 Dublin/ San Ramon N/A
925-829 Dublin/ San Ramon N/A
925-830 Bishop Ranch N/A
925-831 Danville N/A
925-832 East Contra Costa 1/31/2022
925-833 Dublin/ San Ramon N/A
925-834 Antioch 9/29/2021
925-835 Sunol N/A
925-837 Danville N/A
925-838 Danville N/A
925-839 Martinez 4/24/2001
925-842 Bishop Ranch N/A
925-843 Bishop Ranch 5/20/2010
925-844 Clayton 7/17/2001
925-846 Pleasanton N/A
925-847 Pleasanton N/A
925-848 Antioch N/A
925-849 Concord N/A
925-852 Concord 4/24/2001
925-854 Danville N/A
925-855 Danville N/A
925-856 Danville N/A
925-858 Dublin/ San Ramon N/A
925-860 Sunol N/A
925-862 Sunol N/A
925-864 Concord N/A
925-866 Bishop Ranch N/A
925-867 Bishop Ranch N/A
925-871 Lafayette N/A
925-872 Pleasanton N/A
925-875 Dublin/ San Ramon N/A
925-876 Walnut Creek N/A
925-877 Antioch 3/20/2019
925-878 Lafayette N/A
925-880 East Contra Costa 7/13/2021
925-884 Bishop Ranch N/A
925-885 Orinda N/A
925-886 Danville N/A
925-887 Concord N/A
925-888 Moraga N/A
925-889 Clayton N/A
925-890 Concord N/A
925-891 Walnut Creek N/A
925-892 Pleasanton N/A
925-895 Dublin/ San Ramon N/A
925-897 Dublin/ San Ramon 9/17/2021
925-899 Walnut Creek N/A
NPANXX Area Served1 Date2
925-900 Lafayette N/A
925-901 Bishop Ranch N/A
925-904 Bishop Ranch N/A
925-905 Dublin/ San Ramon N/A
925-906 Walnut Creek N/A
925-913 Bishop Ranch 9/20/2002
925-914 Clayton 9/20/2002
925-915 Danville 9/20/2002
925-917 Martinez 9/20/2002
925-918 Pleasanton N/A
925-920 Walnut Creek N/A
925-922 Pleasanton 9/20/2002
925-924 Pleasanton N/A
925-925 Concord 9/27/2022
925-926 Walnut Creek N/A
925-927 Walnut Creek N/A
925-930 Walnut Creek N/A
925-931 Pleasanton N/A
925-932 Walnut Creek N/A
925-933 Walnut Creek N/A
925-934 Walnut Creek N/A
925-935 Walnut Creek N/A
925-937 Walnut Creek N/A
925-938 Walnut Creek N/A
925-939 Walnut Creek N/A
925-940 Walnut Creek N/A
925-941 Walnut Creek N/A
925-942 Walnut Creek N/A
925-943 Walnut Creek N/A
925-944 Walnut Creek N/A
925-945 Walnut Creek N/A
925-946 Walnut Creek N/A
925-947 Walnut Creek N/A
925-948 Walnut Creek N/A
925-949 Walnut Creek N/A
925-951 Walnut Creek N/A
925-952 Walnut Creek N/A
925-953 Walnut Creek N/A
925-954 Walnut Creek N/A
925-955 Walnut Creek N/A
925-956 Walnut Creek N/A
925-957 Martinez N/A
925-960 Livermore N/A
925-961 Livermore N/A
925-962 Lafayette N/A
925-963 Pleasanton N/A
925-964 Danville N/A
925-965 Pleasanton N/A
925-966 Antioch 4/18/2021
925-967 Dublin/ San Ramon N/A
925-968 Bishop Ranch N/A
925-969 Concord N/A
925-973 Bishop Ranch N/A
925-974 Walnut Creek N/A
925-975 Walnut Creek N/A
925-977 Walnut Creek N/A
925-978 Antioch N/A
925-979 Walnut Creek N/A
925-980 Livermore N/A
925-983 Bishop Ranch N/A
925-984 Danville N/A
925-988 Walnut Creek N/A
925-989 Pleasanton N/A
925-990 Sunol N/A
925-993 Clayton 3/26/2001
925-995 Concord 01/04/2024
925-997 Dublin/ San Ramon N/A
925-998 Pleasanton N/A
925-999 Dublin/ San Ramon 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: March 1st, 2025

Cities in area code 925

City1 County Time Zone2
Alamo Contra Costa P
Antioch Contra Costa P
Bethel Island Contra Costa P
Brentwood Contra Costa P
Byron Contra Costa P
Canyon Contra Costa P
Clayton Contra Costa P
Concord Contra Costa P
Danville Contra Costa P
Diablo Contra Costa P
Discovery Bay Contra Costa P
Dublin Alameda P
Lafayette Contra Costa P
Livermore Alameda P
Martinez Contra Costa P
Moraga Contra Costa P
Oakley Contra Costa P
Orinda Contra Costa P
Pacheco Contra Costa P
Pittsburg Contra Costa P
Pleasant Hill Contra Costa P
Pleasanton Alameda P
San Ramon Contra Costa P
Sunol Alameda P
Walnut Creek Contra Costa P
  1. Listed above are most places served by USA area code 925. 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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