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Area Code 720

Area code 720 is in Colorado, USA, spanning 14 counties and serving 74 cities, including Denver, Thornton or Arvada; it currently uses 782 prefixes, assigned from 720-200-XXXX through 720-999-XXXX.

In service since June 01, 1998, area code 720 is an overlay Numbering Plan Area, part of overlay complex 303/720/983.

The current local time is 01:47:40 PM (Mountain Time Zone).

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More Colorado area codes

720 area code prefix location

NPANXX Area served1 Date2
720-200 Denver N/A
720-201 Denver N/A
720-202 Denver 10/7/2009
720-203 Denver 1/29/2001
720-204 Longmont N/A
720-205 Denver N/A
720-206 Denver N/A
720-207 Denver N/A
720-208 Denver N/A
720-209 Denver N/A
720-210 Denver N/A
720-212 Denver N/A
720-213 Denver N/A
720-214 Denver N/A
720-215 Denver 10/12/2009
720-216 Denver 1/29/2001
720-217 Denver N/A
720-218 Denver N/A
720-219 Denver N/A
720-220 Denver N/A
720-221 Denver N/A
720-222 Denver N/A
720-223 Denver N/A
720-224 Denver N/A
720-225 Denver N/A
720-226 Denver N/A
720-227 Denver N/A
720-228 Denver N/A
720-229 Denver N/A
720-230 Denver N/A
720-231 Denver N/A
720-232 Denver N/A
720-233 Denver N/A
720-234 Denver N/A
720-235 Denver N/A
720-236 Denver N/A
720-237 Denver 9/28/2009
720-238 Denver N/A
720-239 Denver N/A
720-240 Denver N/A
720-241 Denver N/A
720-242 Denver 10/9/2008
720-243 Denver 6/30/2009
720-244 Denver N/A
720-245 Denver 11/21/2011
720-246 Denver N/A
720-247 Denver 5/20/2004
720-248 Denver N/A
720-249 Denver N/A
720-250 Denver N/A
720-251 Denver N/A
720-252 Denver N/A
720-253 Denver N/A
720-254 Denver N/A
720-255 Denver N/A
720-256 Denver N/A
720-257 Denver N/A
720-258 Denver N/A
720-259 Denver N/A
720-260 Denver N/A
720-261 Denver N/A
720-262 Denver N/A
720-263 Denver N/A
720-264 Denver N/A
720-265 Denver 5/3/2004
720-266 Denver N/A
720-267 Denver N/A
720-268 Denver N/A
720-269 Denver N/A
720-270 Denver N/A
720-271 Denver N/A
720-272 Denver 1/18/2001
720-273 Denver 1/18/2001
720-274 Denver N/A
720-275 Denver 2/22/2001
720-276 Denver 2/22/2001
720-277 Denver N/A
720-278 Denver 1/25/2001
720-279 Denver 1/25/2001
720-280 Denver N/A
720-281 Denver N/A
720-282 Denver 1/25/2001
720-283 Denver N/A
720-284 Denver N/A
720-285 Denver 1/30/2009
720-286 Denver 4/30/2002
720-287 Denver 4/30/2010
720-288 Denver 2/26/2010
720-289 Denver 7/25/2001
720-290 Denver N/A
720-291 Denver N/A
720-292 Denver 3/4/2009
720-293 Denver N/A
720-294 Denver N/A
720-295 Denver 3/1/2010
720-296 Denver 1/12/2001
720-297 Denver 1/12/2001
720-298 Denver 1/12/2001
720-299 Denver N/A

NPANXX Area served1 Date2
720-300 Denver N/A
720-301 Denver N/A
720-302 Denver N/A
720-303 Denver 02/13/2024
720-304 Denver N/A
720-305 Denver 1/29/2001
720-306 Denver 1/29/2001
720-307 Allenspark/ Lyons 8/2/2012
720-308 Denver 8/14/2001
720-309 Denver 12/5/2001
720-310 Allenspark/ Lyons N/A
720-312 Denver 2/20/2001
720-313 Denver 2/20/2001
720-314 Denver 2/20/2001
720-315 Denver 10/14/2009
720-316 Denver 5/24/2010
720-317 Denver N/A
720-318 Denver N/A
720-319 Denver 4/19/2001
720-320 Denver N/A
720-321 Denver 5/29/2008
720-322 Denver N/A
720-323 Denver N/A
720-324 Denver N/A
720-325 Denver 8/6/2010
720-326 Denver 6/13/2011
720-327 Denver 10/18/2001
720-328 Denver 10/20/2009
720-329 Denver 10/18/2001
720-330 Denver N/A
720-331 Denver N/A
720-332 Denver N/A
720-333 Denver 5/14/2001
720-334 Denver 5/14/2001
720-335 Denver 5/14/2001
720-336 Keenesburg 7/19/2010
720-337 Denver 2/18/2009
720-338 Denver 11/19/2001
720-339 Denver N/A
720-340 Longmont 9/4/2009
720-341 Denver N/A
720-342 Denver 4/15/2009
720-343 Denver 10/31/2003
720-344 Denver N/A
720-345 Denver 12/28/2007
720-346 Denver N/A
720-347 Denver 9/28/2009
720-348 Denver N/A
720-349 Denver 3/28/2011
720-350 Denver N/A
720-351 Denver N/A
720-352 Denver N/A
720-353 Denver N/A
720-354 Denver 6/30/2011
720-355 Denver 8/16/2012
720-356 Denver N/A
720-357 Denver 7/5/2012
720-358 Hudson 9/9/2009
720-359 Denver N/A
720-360 Denver 1/28/2013
720-361 Denver 7/3/2013
720-362 Denver 6/6/2007
720-363 Denver N/A
720-364 Denver 1/15/2002
720-365 Denver 1/15/2002
720-366 Denver 1/15/2002
720-367 Denver N/A
720-368 Denver 4/30/2004
720-369 Denver 3/14/2011
720-370 Denver 1/4/2013
720-371 Denver N/A
720-372 Denver 9/9/2013
720-373 Denver N/A
720-374 Denver N/A
720-375 Denver 7/10/2007
720-376 Denver 11/12/2012
720-377 Denver N/A
720-378 Longmont 1/19/2010
720-379 Denver N/A
720-380 Denver 2/1/2013
720-381 Denver 8/3/2005
720-382 Denver N/A
720-383 Fort Lupton 11/13/2008
720-384 Denver N/A
720-385 Denver N/A
720-386 Georgetown 12/3/2012
720-387 Denver 9/4/2012
720-388 Denver 1/11/2010
720-389 Denver 11/17/2008
720-390 Denver 7/18/2013
720-391 Denver 7/12/2013
720-392 Deer Trail 1/30/2009
720-393 Denver 6/7/2010
720-394 Denver N/A
720-395 Denver 9/4/2009
720-396 Denver 9/8/2009
720-397 Denver 9/8/2009
720-398 Denver 6/28/2010
720-399 Denver 5/6/2011

NPANXX Area served1 Date2
720-400 Denver 10/28/2010
720-401 Denver 1/13/2009
720-402 Denver 5/10/2011
720-403 Denver 7/25/2013
720-404 Denver 10/18/2001
720-405 Denver 8/30/2013
720-406 Denver N/A
720-407 Denver N/A
720-408 Denver 11/15/2012
720-409 Denver 11/22/2011
720-410 Denver 6/27/2014
720-412 Denver 6/28/2010
720-413 Denver 8/27/2008
720-414 Allenspark/ Lyons 10/4/2011
720-415 Denver 6/12/2013
720-416 Denver 6/30/2014
720-417 Denver 8/18/2014
720-418 Denver 3/12/2014
720-419 Denver 3/16/2016
720-420 Denver 5/26/2010
720-421 Denver 3/20/2009
720-422 Denver 9/26/2001
720-423 Denver 4/22/2004
720-424 Denver 4/22/2004
720-425 Denver 1/15/2008
720-426 Denver 4/20/2010
720-427 Denver 2/4/2002
720-428 Denver 12/12/2011
720-429 Denver 7/2/2008
720-430 Denver 6/28/2012
720-431 Denver 9/22/2010
720-432 Denver 2/26/2010
720-433 Denver N/A
720-434 Denver N/A
720-435 Denver N/A
720-436 Denver N/A
720-437 Denver 2/8/2011
720-438 Longmont 9/26/2006
720-439 Denver 4/21/2010
720-440 Denver 5/12/2010
720-441 Denver 5/18/2011
720-442 Longmont 4/4/2011
720-443 Denver 10/7/2010
720-444 Denver N/A
720-445 Denver 9/15/2010
720-446 Denver 2/23/2011
720-447 Denver 2/22/2008
720-448 Denver 4/9/2008
720-449 Denver N/A
720-450 Denver 1/8/2014
720-451 Denver 10/25/2013
720-452 Denver 12/28/2010
720-453 Longmont N/A
720-454 Denver 8/11/2010
720-455 Denver 7/2/2010
720-456 Denver 7/23/2013
720-457 Denver N/A
720-458 Denver 9/27/2010
720-459 Denver 10/15/2010
720-460 Denver 11/13/2013
720-461 Denver 12/22/2015
720-462 Denver 11/23/2016
720-463 Deckers 2/5/2013
720-464 Denver 4/21/2011
720-465 Denver 1/3/2012
720-466 Fort Lupton 6/28/2010
720-467 Denver 1/10/2014
720-468 Denver 12/17/2001
720-469 Denver 9/23/2011
720-470 Denver N/A
720-471 Denver 6/12/2014
720-472 Denver N/A
720-473 Denver N/A
720-474 Denver 10/31/2011
720-475 Denver N/A
720-476 Denver 5/19/2014
720-477 Denver 8/9/2011
720-478 Denver 5/8/2013
720-479 Denver N/A
720-480 Denver N/A
720-481 Denver 8/15/2014
720-482 Denver N/A
720-483 Denver 8/4/2014
720-484 Denver 7/18/2011
720-485 Denver 5/8/2014
720-486 Denver 8/18/2014
720-487 Longmont 12/9/2016
720-488 Denver N/A
720-489 Denver N/A
720-490 Denver N/A
720-491 Longmont 11/16/2011
720-492 Denver 8/25/2014
720-493 Denver N/A
720-494 Longmont N/A
720-495 Denver 9/28/2001
720-496 Denver 12/17/2001
720-497 Denver N/A
720-498 Denver 9/10/2012
720-499 Denver 8/9/2011

NPANXX Area served1 Date2
720-500 Denver 10/7/2014
720-501 Denver 8/28/2014
720-502 Denver 11/15/2012
720-503 Denver 10/2/2014
720-504 Denver 5/24/2013
720-505 Denver 1/11/2011
720-506 Denver 12/17/2001
720-507 Denver 10/30/2014
720-508 Denver 6/26/2012
720-509 Denver 4/2/2010
720-510 Denver 6/13/2017
720-512 Denver 5/9/2016
720-513 Denver 8/25/2017
720-514 Denver N/A
720-515 Denver 2/11/2010
720-516 Denver 7/21/2017
720-517 Denver 6/30/2015
720-518 Denver 5/16/2014
720-519 Denver N/A
720-520 Denver 5/13/2016
720-521 Denver N/A
720-522 Denver 11/19/2010
720-523 Denver 5/24/2010
720-524 Denver N/A
720-525 Denver 4/2/2013
720-526 Longmont 6/12/2014
720-527 Denver 10/27/2017
720-528 Denver N/A
720-529 Denver N/A
720-530 Denver N/A
720-531 Denver 8/16/2016
720-532 Denver N/A
720-533 Denver N/A
720-534 Longmont 8/31/2016
720-535 Denver N/A
720-536 Denver N/A
720-537 Denver 10/22/2014
720-538 Fort Lupton 9/24/2012
720-539 Denver 7/8/2011
720-540 Denver N/A
720-541 Denver 9/28/2012
720-542 Denver N/A
720-543 Denver 10/14/2016
720-544 Denver N/A
720-545 Denver 6/12/2009
720-546 Denver 8/23/2016
720-547 Keenesburg 3/30/2018
720-548 Denver N/A
720-549 Denver N/A
720-550 Denver 6/25/2013
720-551 Denver 4/1/2011
720-552 Longmont 11/16/2012
720-553 Denver 6/22/2012
720-554 Denver N/A
720-556 Denver 5/10/2011
720-557 Denver 6/12/2013
720-558 Denver 3/13/2002
720-559 Denver N/A
720-560 Denver N/A
720-561 Denver 4/18/2008
720-562 Denver N/A
720-563 Denver N/A
720-564 Denver N/A
720-565 Denver N/A
720-566 Denver N/A
720-567 Denver N/A
720-568 Denver 2/27/2001
720-569 Denver 10/8/2008
720-570 Denver N/A
720-571 Allenspark/ Lyons 3/1/2016
720-572 Denver 12/14/2016
720-573 Denver 10/17/2014
720-574 Denver 6/29/2018
720-575 Denver 11/11/2014
720-576 Denver 11/9/2016
720-577 Denver 7/3/2014
720-578 Denver N/A
720-579 Denver N/A
720-580 Keenesburg 3/15/2013
720-581 Denver N/A
720-582 Denver 11/12/2015
720-583 Denver 9/30/2010
720-584 Denver 10/21/2014
720-585 Denver 11/2/2012
720-586 Denver 5/25/2017
720-587 Denver N/A
720-588 Denver 10/17/2012
720-589 Denver 4/30/2013
720-590 Denver 2/5/2013
720-591 Denver 9/15/2016
720-592 Denver 12/8/2016
720-593 Denver 4/2/2014
720-594 Denver 6/30/2017
720-595 Denver 5/10/2016
720-596 Denver N/A
720-597 Longmont 1/11/2016
720-598 Denver 2/26/2015
720-599 Denver 2/13/2012

NPANXX Area served1 Date2
720-600 Longmont 12/20/2012
720-601 Denver 12/21/2017
720-602 Denver 7/31/2017
720-603 Denver 9/1/2017
720-604 Strasburg N/A
720-605 Denver 11/17/2015
720-606 Fort Lupton 8/12/2011
720-607 Denver 3/16/2017
720-608 Georgetown 7/19/2010
720-609 Denver 6/3/2014
720-610 Denver 7/30/2018
720-612 Denver 7/22/2011
720-613 Hudson 3/1/2013
720-614 Denver 10/4/2018
720-615 Keenesburg 8/17/2020
720-616 Denver 8/29/2014
720-617 Denver 4/18/2019
720-618 Denver 7/10/2014
720-619 Georgetown 3/25/2014
720-620 Denver 3/27/2002
720-621 Denver 3/27/2002
720-622 Denver N/A
720-623 Denver 2/17/2012
720-624 Denver N/A
720-625 Denver 9/20/2011
720-626 Denver 1/11/2011
720-627 Denver 3/6/2012
720-628 Denver 3/4/2002
720-629 Denver 3/4/2002
720-630 Denver 10/23/2013
720-631 Denver 4/3/2017
720-632 Denver 1/11/2018
720-633 Denver 12/28/2010
720-634 Denver 11/16/2012
720-635 Denver N/A
720-636 Denver 11/13/2013
720-637 Denver 10/21/2021
720-638 Denver 1/17/2013
720-639 Denver 5/14/2014
720-640 Hudson 1/28/2019
720-641 Denver N/A
720-642 Denver 10/22/2015
720-643 Denver 8/24/2015
720-644 Denver 4/1/2011
720-645 Denver 3/5/2014
720-646 Denver 10/7/2015
720-647 Denver 5/20/2019
720-648 Denver 5/10/2011
720-649 Georgetown 8/30/2018
720-650 Denver 8/17/2017
720-651 Denver 10/15/2015
720-652 Longmont N/A
720-653 Denver 6/3/2019
720-654 Denver 1/10/2022
720-655 Denver 8/30/2021
720-656 Denver 10/7/2015
720-657 Denver 2/25/2019
720-658 Denver 3/26/2010
720-659 Denver 7/15/2022
720-660 Denver 4/8/2014
720-661 Denver 12/24/2018
720-662 Denver 9/30/2014
720-663 Denver 5/28/2008
720-664 Allenspark/ Lyons 8/16/2019
720-665 Denver 8/30/2017
720-666 Denver 5/23/2012
720-667 Denver 11/21/2017
720-668 Denver 10/16/2014
720-669 Hudson 12/12/2014
720-670 Denver N/A
720-671 Denver 4/25/2019
720-672 Denver 9/30/2019
720-673 Denver 8/23/2019
720-674 Denver 2/20/2020
720-675 Denver 5/12/2009
720-676 Denver 8/29/2016
720-677 Denver 6/20/2019
720-678 Denver 10/9/2019
720-679 Georgetown 8/16/2019
720-680 Longmont 6/4/2020
720-681 Denver 4/9/2019
720-682 Denver 10/22/2018
720-683 Fort Lupton 5/15/2013
720-684 Longmont N/A
720-685 Denver N/A
720-686 Denver 10/14/2010
720-687 Denver 11/19/2019
720-688 Denver 7/15/2015
720-689 Denver 4/4/2011
720-690 Denver 3/27/2002
720-691 Denver 6/25/2019
720-692 Denver 5/27/2015
720-693 Denver 1/11/2017
720-694 Denver 3/24/2020
720-695 Denver 8/12/2014
720-696 Denver 6/1/2015
720-697 Denver 11/9/2015
720-698 Longmont 3/15/2022
720-699 Denver 11/11/2014

NPANXX Area served1 Date2
720-701 Denver 4/16/2019
720-702 Keenesburg 3/27/2020
720-703 Denver 6/19/2020
720-704 Denver 3/31/2020
720-705 Denver 10/2/2014
720-706 Denver 7/13/2020
720-707 Denver 11/21/2014
720-708 Denver 8/12/2011
720-709 Denver 8/21/2014
720-710 Denver 9/7/2016
720-712 Fort Lupton 6/20/2019
720-713 Longmont 8/16/2019
720-714 Longmont 8/24/2020
720-715 Deckers 2/8/2019
720-716 Denver 3/25/2020
720-717 Denver 3/3/2015
720-718 Longmont 12/19/2016
720-721 Denver N/A
720-722 Denver 5/21/2010
720-723 Denver 2/4/2013
720-724 Denver 4/2/2013
720-725 Denver 6/10/2015
720-726 Denver 10/29/2013
720-727 Longmont 6/12/2018
720-728 Denver 12/16/2015
720-729 Keenesburg 3/2/2012
720-730 Denver 9/20/2018
720-731 Longmont 1/4/2019
720-732 Denver N/A
720-733 Denver N/A
720-734 Denver 5/11/2020
720-735 Keenesburg 10/28/2014
720-736 Denver 1/21/2021
720-737 Denver 12/13/2012
720-738 Denver 4/29/2019
720-739 Denver 4/29/2014
720-740 Deckers 8/29/2019
720-741 Georgetown 8/19/2020
720-742 Denver 9/11/2020
720-743 Longmont 9/21/2020
720-744 Denver N/A
720-745 Longmont 4/17/2015
720-746 Denver N/A
720-747 Denver N/A
720-748 Denver N/A
720-749 Denver 9/25/2015
720-750 Denver 1/28/2019
720-751 Denver 1/9/2020
720-752 Denver 8/17/2020
720-753 Fort Lupton 12/1/2015
720-754 Denver 3/30/2010
720-755 Denver 9/1/2015
720-756 Denver 11/24/2020
720-757 Denver 9/30/2014
720-758 Denver 12/20/2016
720-759 Longmont 8/10/2016
720-760 Denver 10/15/2020
720-761 Denver 10/5/2020
720-762 Denver 7/18/2019
720-763 Denver 11/5/2009
720-764 Hudson 10/23/2020
720-765 Denver 9/29/2017
720-766 Denver 1/25/2019
720-767 Denver 7/14/2014
720-768 Denver 11/14/2017
720-769 Denver 9/3/2020
720-770 Deckers 9/30/2014
720-771 Denver N/A
720-772 Denver 10/15/2014
720-773 Denver 2/9/2015
720-774 Denver 6/4/2015
720-775 Denver 10/14/2009
720-776 Deckers 2/14/2019
720-777 Denver 2/9/2006
720-778 Denver 9/30/2014
720-779 Denver 6/12/2019
720-780 Denver 12/16/2019
720-781 Longmont 11/24/2020
720-782 Hudson 7/2/2019
720-783 Denver 8/5/2022
720-784 Georgetown 12/31/2020
720-785 Denver N/A
720-786 Denver 8/12/2022
720-787 Denver 8/23/2016
720-788 Denver 1/6/2017
720-789 Denver 8/5/2011
720-790 Allenspark/ Lyons 8/18/2020
720-791 Georgetown 3/16/2017
720-792 Denver 11/9/2020
720-793 Denver 11/13/2018
720-794 Allenspark/ Lyons 1/15/2021
720-795 Denver 6/21/2017
720-796 Georgetown 12/11/2020
720-797 Keenesburg 5/22/2019
720-798 Denver 4/21/2020
720-799 Denver 3/13/2015

NPANXX Area served1 Date2
720-800 Denver 11/8/2012
720-801 Georgetown 9/26/2022
720-802 Fort Lupton 8/19/2020
720-803 Denver 1/14/2021
720-804 Longmont 3/5/2021
720-805 Denver 8/15/2018
720-806 Deckers 2/24/2021
720-807 Denver 8/27/2020
720-808 Denver 10/20/2010
720-809 Denver 8/22/2014
720-810 Denver N/A
720-812 Denver 3/24/2020
720-813 Denver 3/5/2021
720-814 Deer Trail 9/7/2021
720-815 Longmont 9/1/2017
720-816 Allenspark/ Lyons 03/29/2023
720-817 Strasburg 9/24/2021
720-818 Longmont 9/1/2017
720-819 Denver 3/9/2018
720-820 Denver 9/28/2015
720-821 Longmont 1/6/2021
720-822 Denver 5/12/2014
720-823 Denver 1/8/2021
720-824 Hudson 10/20/2021
720-825 Denver 9/23/2022
720-826 Denver 7/30/2019
720-827 Denver 3/22/2018
720-828 Denver 11/12/2018
720-829 Denver 7/29/2014
720-830 Denver 12/3/2018
720-831 Denver 10/25/2021
720-832 Hudson 03/29/2023
720-833 Denver N/A
720-834 Denver N/A
720-835 Denver 9/25/2015
720-836 Denver N/A
720-837 Denver N/A
720-838 Denver N/A
720-839 Denver N/A
720-840 Denver N/A
720-841 Denver N/A
720-842 Denver N/A
720-843 Denver 10/21/2021
720-844 Denver 1/25/2021
720-845 Denver 8/30/2017
720-846 Deer Trail 6/22/2022
720-847 Denver 11/5/2003
720-848 Denver N/A
720-849 Denver N/A
720-850 Denver 5/27/2021
720-851 Denver N/A
720-852 Denver N/A
720-853 Longmont 10/25/2021
720-854 Denver N/A
720-855 Denver N/A
720-856 Fort Lupton 10/25/2021
720-857 Denver N/A
720-858 Denver N/A
720-859 Denver N/A
720-860 Denver 8/12/2022
720-861 Georgetown 10/26/2021
720-862 Denver N/A
720-863 Denver N/A
720-864 Longmont N/A
720-865 Denver N/A
720-866 Denver 2/22/2019
720-868 Fort Lupton 4/1/2021
720-869 Denver 10/25/2021
720-870 Denver N/A
720-871 Longmont 11/18/2021
720-872 Denver N/A
720-873 Denver N/A
720-874 Denver N/A
720-875 Denver N/A
720-876 Denver N/A
720-877 Denver N/A
720-878 Denver N/A
720-879 Denver N/A
720-880 Denver N/A
720-881 Denver N/A
720-882 Denver N/A
720-883 Denver N/A
720-884 Denver N/A
720-885 Denver 2/4/2010
720-886 Denver N/A
720-887 Denver N/A
720-888 Denver N/A
720-889 Denver N/A
720-890 Denver N/A
720-891 Denver 12/17/2001
720-892 Denver 3/20/2018
720-893 Allenspark/ Lyons 8/8/2014
720-894 Deckers 10/25/2021
720-895 Denver N/A
720-896 Denver 11/12/2021
720-897 Denver N/A
720-898 Denver N/A
720-899 Longmont 11/10/2014

NPANXX Area served1 Date2
720-900 Denver 10/7/2014
720-901 Denver 11/17/2021
720-902 Denver 5/1/2019
720-903 Denver N/A
720-904 Denver N/A
720-905 Denver 1/26/2022
720-906 Byers 12/3/2021
720-907 Denver N/A
720-908 Denver 5/15/2017
720-909 Denver N/A
720-910 Denver 3/25/2022
720-912 Denver 10/5/2020
720-913 Denver N/A
720-914 Fort Lupton 01/16/2024
720-915 Allenspark/ Lyons 6/24/2022
720-916 Denver 7/6/2022
720-917 Denver N/A
720-918 Keenesburg 6/24/2022
720-919 Denver 8/23/2016
720-920 Denver N/A
720-921 Denver N/A
720-922 Denver N/A
720-923 Denver 8/22/2018
720-924 Deckers N/A
720-925 Denver 12/18/2015
720-926 Denver 6/14/2018
720-927 Longmont 3/27/2019
720-928 Fort Lupton 5/15/2018
720-929 Denver N/A
720-930 Denver 8/27/2015
720-931 Denver N/A
720-932 Denver N/A
720-933 Denver N/A
720-934 Denver N/A
720-935 Denver N/A
720-936 Denver N/A
720-937 Denver N/A
720-938 Denver N/A
720-939 Denver N/A
720-940 Denver N/A
720-941 Denver N/A
720-942 Denver N/A
720-943 Denver N/A
720-944 Denver N/A
720-945 Denver N/A
720-946 Denver N/A
720-947 Denver N/A
720-948 Denver 6/22/2022
720-949 Denver N/A
720-951 Denver N/A
720-952 Deckers 6/24/2022
720-953 Denver 7/21/2022
720-954 Fort Lupton 9/16/2022
720-955 Denver 7/9/2015
720-956 Denver N/A
720-957 Denver 1/27/2022
720-960 Denver 8/17/2022
720-961 Denver N/A
720-962 Denver N/A
720-963 Denver N/A
720-964 Longmont 9/20/2022
720-965 Denver 6/7/2013
720-966 Fort Lupton 10/2/2014
720-967 Denver 9/21/2022
720-968 Denver 8/17/2022
720-969 Denver 10/18/2022
720-971 Denver N/A
720-972 Denver 4/23/2002
720-973 Denver 03/06/2023
720-974 Denver N/A
720-975 Denver N/A
720-977 Denver N/A
720-978 Denver 11/15/2022
720-979 Denver N/A
720-980 Denver N/A
720-981 Denver N/A
720-982 Denver N/A
720-983 Denver 05/25/2023
720-984 Denver N/A
720-985 Denver N/A
720-986 Longmont 10/18/2022
720-987 Denver N/A
720-988 Denver N/A
720-989 Denver N/A
720-990 Denver 7/21/2015
720-991 Deckers 10/5/2022
720-992 Denver 1/11/2018
720-993 Denver 10/18/2022
720-994 Denver 11/23/2022
720-995 Denver 12/28/2022
720-996 Denver 3/15/2017
720-997 Bennett 3/25/2022
720-998 Denver 12/1/2006
720-999 Denver 7/22/2008
  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.
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Cities in area code 720

City1 County Time2
Allenspark Boulder M
Arvada Jefferson M
Aurora Adams M
Bailey Park M
Bennett Adams M
Black Hawk Gilpin M
Bond Eagle M
Boulder Boulder M
Brighton Adams M
Broomfield Broomfield M
Buffalo Creek Jefferson M
Byers Arapahoe M
Castle Rock Douglas M
Central City Gilpin M
Commerce City Adams M
Conifer Jefferson M
Dacono Weld M
Deer Trail Arapahoe M
Denver Adams M
Dumont Clear Creek M
Dupont Adams M
Eastlake Adams M
Elbert El Paso M
Eldorado Springs Boulder M
Elizabeth Elbert M
Empire Clear Creek M
Englewood Arapahoe M
Erie Weld M
Evergreen Jefferson M
Firestone Weld M
Fort Lupton Weld M
Franktown Douglas M
Frederick Weld M
Georgetown Clear Creek M
Golden Jefferson M
Grant Park M
Henderson Adams M
Hereford Weld M
Highlands Ranch Douglas M
Hudson Weld M
Hygiene Boulder M
Idaho Springs Clear Creek M
Idledale Jefferson M
Indian Hills Jefferson M
Jamestown Boulder M
Keenesburg Weld M
Kiowa Elbert M
Kittredge Jefferson M
Lafayette Boulder M
Lakewood Jefferson M
Larkspur Douglas M
Littleton Arapahoe M
Longmont Boulder M
Louisville Boulder M
Louviers Douglas M
Lyons Boulder M
Morrison Jefferson M
Nederland Boulder M
Niwot Boulder M
Parker Douglas M
Pine Jefferson M
Pinecliffe Boulder M
Roggen Weld M
Rollinsville Gilpin M
Sedalia Douglas M
Sedgwick Sedgwick M
Shawnee Park M
Silver Plume Clear Creek M
Strasburg Adams M
Thornton Adams M
Ward Boulder M
Watkins Adams M
Westminster Adams M
Wheat Ridge Jefferson M
  1. Listed above are most places served by USA area code 720. 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. M stands for Mountain Time Zone (currently 01:47:40 PM).
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