Area code 303 prefixes in Colorado

Exchange Location
303-200 Philadelphia
303-201 Fargo
303-202 Jackson
303-203 Fargo
303-204 Ontario
303-205 Waukegan
303-206 Denver
303-207 Jacksonville
303-208 Cincinnati
303-209 Ontario
303-210 Milwaukee
303-212 Kansas City
303-213 Madison
303-214 Huntington Beach
303-215 Atlanta
303-216 Charlotte
303-217 Macon
303-218 Wabash
303-219 Eugene
303-220 College Station
303-221 San Mateo
303-222 Roanoke
303-223 Manchester
303-224 Madison
303-225 Quincy
303-226 Lexington
303-227 Alexandria
303-228 Whippany
303-229 Kansas City
303-230 Lakeland
303-231 Muskegon
303-232 San Francisco
303-233 Scranton
303-234 Otsego
303-235 Columbia
303-236 Worcester
303-238 Modesto
303-239 Las Vegas
303-240 Atlanta
303-241 Alhambra
303-242 Augusta
303-243 Abilen
303-244 Huntington
303-245 New Braunfels
303-246 Melrose
303-247 New Braunfels
303-248 Lawton
303-249 Huntington
303-250 Charlotte
303-251 Erie
303-252 Portland
303-253 Dallas
303-254 Huntsville
303-255 Richmond
303-256 Colorado Springs
303-257 St. George
303-258 Greensboro
303-259 Zanesville
303-260 Dallas
303-261 Roanoke
303-262 Hartford
303-263 San Jose
303-264 Evansville
303-265 Marquette
303-266 Saginaw
303-267 Lafayette
303-268 Oklahoma City
303-269 Spokane
303-270 Yonkers
303-271 Greensboro
303-272 Racine
303-273 Raleigh
303-274 Lafayette
303-275 Asheville
303-276 Anchorage
303-277 Mc Camey
303-278 Waco
303-280 Dallas
303-281 Grand Rapids
303-282 Orlando
303-283 Sioux Falls
303-284 Muskegon
303-285 Van Nuys
303-286 Grand Island
303-287 Lynchburg
303-288 Alexandria
303-289 Denver
303-290 Denver
303-291 Tallahassee
303-292 Tulsa
303-293 Virginia Beach
303-294 Ada
303-295 West Palm Beach
303-296 Eugene
303-297 Long Beach
303-298 Los Angeles
303-299 Greenville
303-300 Melbourne
303-301 Lawton
303-302 Ontario
303-304 Akron
303-306 Santa Barbara
303-307 Rockford
303-308 Saint Petersburg
303-309 Miami
303-310 Albany
303-312 Springfield
303-313 Saint Petersburg
303-314 New Orleans
303-315 San Jose
303-316 Newark
303-317 Houston
303-318 Washington
303-319 Reno
303-320 Grand Rapids
303-321 Akron
303-322 Racine
303-324 Mobile
303-325 Hartford
303-326 Akron
303-327 Tupelo
303-328 Royal Oak
303-329 Davenport
303-330 Baton Rouge
303-331 Portland
303-332 Vista
303-333 Fargo
303-334 Raleigh
303-335 Oak Park
303-336 Yuma
303-337 Miami
303-338 Cape Coral
303-339 Belleville
303-340 Savannah
303-341 Alhambra
303-342 Providence
303-343 Tucson
303-344 Pittsburgh
303-345 Green Bay
303-346 New Haven
303-347 Cedar Rapids
303-348 Cleveland
303-349 Lansing
303-350 Tulsa
303-352 Tallahassee
303-353 Grand Junction
303-354 Montgomery
303-355 Lubbock
303-356 Oklahoma City
303-357 Chicago
303-358 Santa Ana
303-359 Champaign
303-360 Ozark
303-361 Nashville
303-362 Virginia Beach
303-363 Miami
303-364 Newark
303-365 Shreveport
303-366 Sarasota
303-367 Chicago
303-368 Miami
303-369 Cincinnati
303-370 Raleigh
303-371 Quincy
303-372 Franklin
303-373 Reno
303-374 Van Nuys
303-375 Long Beach
303-376 Conroe
303-377 Rockford
303-378 Martinsville
303-379 Tulsa
303-380 Anchorage
303-381 Tampa
303-382 Alexandria
303-383 Phoenix
303-384 Washington
303-385 Hackensack
303-386 Green Bay
303-387 Charleston
303-388 San Bernardino
303-390 Naperville
303-391 Tupelo
303-392 Melrose
303-393 Miami
303-394 Charleston
303-395 Kansas City
303-396 Tallahassee
303-397 Santa Rosa
303-398 Wichita Falls
303-399 Cincinnati
303-400 Reno
303-401 Spokane
303-402 Santa Cruz
303-403 Philadelphia
303-404 Greensburg
303-405 Sacramento
303-406 Jonesboro
303-407 Rockford
303-408 Albuquerque
303-409 Chicago
303-410 Alexandria
303-412 Toms River
303-413 Jersey City
303-414 Vero Beach
303-415 Worcester
303-416 Waco
303-417 San Diego
303-418 Pikesville
303-419 Houston
303-420 Long Beach
303-421 Louisville
303-422 Clarksville
303-423 Atlantic City
303-424 Akron
303-425 Savannah
303-426 Toms River
303-427 Waukegan
303-428 Santa Barbara
303-429 Jackson
303-430 Jacksonville
303-431 San Francisco
303-432 Gaithersburg
303-433 Alexandria
303-434 Zanesville
303-435 Boise
303-436 Lafayette
303-437 Cincinnati
303-438 Racine
303-439 Gulfport
303-440 Spokane
303-441 Alexandria
303-442 Champaign
303-443 Chico
303-444 San Diego
303-445 Eau Claire
303-446 Fort Lauderdale
303-447 San Francisco
303-448 Hartford
303-449 Hartford
303-450 San Bernardino
303-451 Modesto
303-452 Washington
303-453 Tucson
303-454 Huntington
303-455 Omaha
303-456 Jackson
303-457 Newark
303-458 Worcester
303-459 New Orleans
303-460 Davenport
303-461 Peoria
303-462 Honolulu
303-463 San Antonio
303-464 Franklin
303-465 Lawton
303-466 Sioux Falls
303-467 Ogden
303-468 Chico
303-469 Gary
303-470 Wabash
303-471 Miami
303-472 Tulsa
303-473 Huntington
303-474 Charlotte
303-475 Atlantic City
303-476 Doylestown
303-477 Albany
303-478 San Bernardino
303-479 Savannah
303-480 Eugene
303-481 Scranton
303-482 Lawton
303-483 Detroit
303-484 Memphis
303-485 Nashville
303-486 Hutchinson
303-487 Ortonville
303-488 Detroit
303-489 Dayton
303-490 Moorestown
303-491 Ogden
303-492 Hutchinson
303-493 Tyler
303-494 Toledo
303-495 Atlanta
303-496 Vista
303-497 Cleveland
303-498 Walnut Creek
303-499 Dallas
303-500 Pikesville
303-501 Little Rock
303-502 Naperville
303-503 Colorado Springs
303-504 Chicago
303-505 Chicago
303-506 Lubbock
303-507 Eau Claire
303-508 Manchester
303-509 Cleveland
303-510 Davenport
303-512 Denver
303-513 Lowell
303-514 Madison
303-515 Fargo
303-516 Los Angeles
303-517 Lowell
303-518 Cleveland
303-519 Huntington
303-520 Atlantic City
303-521 Shreveport
303-522 Greensburg
303-523 Atlanta
303-524 Savannah
303-525 Duluth
303-526 Billings
303-527 Denver
303-528 Columbus
303-529 New Haven
303-530 Vista
303-531 Albuquerque
303-532 Springfield
303-533 Greenville
303-534 Macon
303-535 Lubbock
303-536 Champaign
303-537 Louisville
303-538 El Paso
303-539 Wilmington
303-540 Herndon
303-541 Grand Junction
303-542 Jonesboro
303-543 Rockford
303-544 Sioux City
303-545 Jackson
303-546 Greensboro
303-547 Sioux Falls
303-548 Miami
303-549 Gainesville
303-550 Columbus
303-551 Lynbrook
303-552 Waco
303-553 Fayetteville
303-554 Long Beach
303-556 Honolulu
303-557 Tampa
303-558 Los Angeles
303-559 Denver
303-560 Martinsville
303-561 Portland
303-562 Lansing
303-563 Herndon
303-564 Cincinnati
303-565 San Mateo
303-566 Huntington
303-567 Toms River
303-568 Omaha
303-569 New Orleans
303-570 Ozark
303-571 Sioux Falls
303-572 Belleville
303-573 Ramsey
303-574 Sacramento
303-575 Eau Claire
303-576 Dayton
303-577 Muskegon
303-578 Augusta
303-579 Ontario
303-580 Exton
303-581 Lexington
303-582 New Haven
303-583 Columbia
303-584 Portland
303-585 Asheville
303-586 Los Angeles
303-587 Santa Ana
303-588 Austin
303-589 Peoria
303-590 Detroit
303-591 Hartford
303-592 Gaithersburg
303-593 Augusta
303-594 Ogden
303-595 Tulsa
303-596 Belleville
303-597 Lowell
303-598 Scituate
303-599 Birmingham
303-600 San Jose
303-601 Saint Cloud
303-602 Macon
303-603 Richmond
303-604 Dallas
303-606 Los Angeles
303-607 Hartford
303-608 Jackson
303-609 Memphis
303-610 Rochester
303-612 Honolulu
303-613 Detroit
303-614 Pikesville
303-615 Exton
303-616 Asheville
303-617 Greensboro
303-618 Lynn
303-620 Las Vegas
303-621 Zanesville
303-622 Vista
303-623 Worcester
303-624 Baltimore
303-625 Huntsville
303-626 Huntington
303-627 San Antonio
303-628 Martinsville
303-629 Lexington
303-630 Anchorage
303-632 Austin
303-633 Albany
303-634 Fort Lauderdale
303-635 Boise
303-636 Sacramento
303-637 Roseville
303-638 Jackson
303-639 Lynchburg
303-640 Miami
303-641 San Jose
303-643 Muncie
303-644 Mesa
303-645 Birmingham
303-646 Roseville
303-648 Peoria
303-649 Oak Park
303-650 Greensboro
303-651 Sioux Falls
303-652 Shreveport
303-653 Los Angeles
303-654 Los Angeles
303-655 Atlanta
303-656 Tupelo
303-657 Chico
303-658 Newark
303-659 Buffalo
303-660 Sedalia
303-661 Grand Island
303-662 Lafayette
303-663 Vancouver
303-664 Las Vegas
303-665 Rockford
303-666 Lexington
303-667 Denver
303-668 Moorestown
303-669 Spring Valley
303-670 Houston
303-671 Savannah
303-672 Houston
303-673 Lawton
303-674 Houston
303-675 Toms River
303-676 Lafayette
303-677 Rochester
303-678 Laredo
303-679 Worcester
303-680 Albuquerque
303-681 Lynn
303-682 Green Bay
303-683 Fargo
303-684 Scranton
303-685 Ann Arbor
303-686 Lafayette
303-687 Dallas
303-688 Fargo
303-689 Franklin
303-690 Virginia Beach
303-691 Tulsa
303-692 Long Beach
303-693 Wichita Falls
303-694 Albany
303-695 Orlando
303-696 Portland
303-697 Waco
303-698 Manchester
303-699 Grand Island
303-701 Davenport
303-702 Fresno
303-703 Anchorage
303-704 Davenport
303-705 Chicago
303-706 Tulsa
303-707 Columbia
303-709 Kansas City
303-710 Washington
303-712 Honolulu
303-713 Burlington
303-714 New Braunfels
303-715 Eau Claire
303-716 Bakersfield
303-717 Louisville
303-718 Buffalo
303-719 Charlotte
303-720 Boise
303-721 Eau Claire
303-722 Flint
303-723 Naperville
303-724 Lancaster
303-725 Jonesboro
303-726 Jersey City
303-727 Reading
303-728 Shreveport
303-729 Portland
303-730 Denver
303-731 Walnut Creek
303-732 Greensburg
303-733 Baltimore
303-734 Saint Cloud
303-735 Alexandria
303-736 Anchorage
303-737 San Francisco
303-738 Las Vegas
303-739 Jonesboro
303-740 Yuma
303-741 Boise
303-742 Ogden
303-743 Roseville
303-744 Rochester
303-745 Muskegon
303-746 Boston
303-748 Eau Claire
303-749 Huntsville
303-750 Omaha
303-751 Springfield
303-752 Worcester
303-753 Doylestown
303-754 London
303-755 Jackson
303-757 Charleston
303-758 Charlotte
303-759 Fresno
303-760 Chattanooga
303-761 Houston
303-762 Chicago
303-763 Hutchinson
303-764 Shreveport
303-765 Providence
303-766 Huntsville
303-767 Mason City
303-768 Lakeland
303-769 Denver
303-770 Fort Lauderdale
303-771 Los Angeles
303-772 Buffalo
303-773 Melbourne
303-774 San Francisco
303-775 Denver
303-776 San Francisco
303-777 Lynbrook
303-778 Royal Oak
303-779 Raleigh
303-780 Peoria
303-781 Mc Camey
303-782 Columbia
303-783 Seattle
303-784 Asheville
303-785 Grand Rapids
303-786 San Jose
303-787 Billings
303-788 Chicago
303-789 Rochester
303-790 Roanoke
303-791 Asheville
303-792 Fort Worth
303-794 Lancaster
303-795 Santa Ana
303-796 Houston
303-797 Charleston
303-798 Houston
303-799 Fort Lauderdale
303-800 Washington
303-801 Houston
303-802 Omaha
303-803 Nashville
303-804 Sioux City
303-805 Saginaw
303-806 Madison
303-808 Natchez
303-809 Greensboro
303-810 Raleigh
303-812 Greensboro
303-813 Exton
303-814 Scranton
303-815 Houston
303-817 Oklahoma City
303-818 Albuquerque
303-819 Augusta
303-820 Montgomery
303-821 Chattanooga
303-822 Charleston
303-824 Hutchinson
303-825 Erie
303-826 Louisville
303-827 Santa Barbara
303-828 Tucson
303-829 Portland
303-830 Pikesville
303-832 El Toro
303-833 Spokane
303-834 Columbus
303-835 Providence
303-836 Moorestown
303-837 Hutchinson
303-839 Lakeland
303-840 New Braunfels
303-841 Raleigh
303-842 San Francisco
303-843 Birmingham
303-844 Dallas
303-845 Denver
303-846 Jonesboro
303-847 Exton
303-848 Exton
303-849 Jonesboro
303-850 Atlantic City
303-851 Buffalo
303-852 Lubbock
303-853 Whippany
303-854 Fargo
303-855 Duluth
303-856 Belleville
303-857 Toledo
303-858 San Jose
303-859 Gaithersburg
303-860 San Mateo
303-862 Marquette
303-863 Exton
303-864 Richmond
303-865 Sacramento
303-866 Yonkers
303-867 Greenville
303-868 Manchester
303-869 Akron
303-870 Kansas City
303-871 New Haven
303-872 Daytona Beach
303-873 Fort Worth
303-874 Houston
303-875 Ann Arbor
303-876 San Diego
303-877 Burlington
303-878 Eau Claire
303-879 Royal Oak
303-880 Akron
303-881 Conroe
303-882 Sedalia
303-883 Indianapolis
303-884 Ogden
303-885 Oak Park
303-886 Portland
303-888 Los Angeles
303-889 Alhambra
303-890 Binghamton
303-891 Dallas
303-892 Topeka
303-893 Oradell
303-894 Spring Valley
303-895 Boston
303-896 Colorado Springs
303-897 Phoenix
303-898 Raleigh
303-899 Houston
303-900 Natchez
303-901 Albany
303-902 Lancaster
303-903 Orlando
303-904 Greensburg
303-905 San Diego
303-906 Davenport
303-907 Sacramento
303-908 Wilmington
303-909 Albany
303-910 Wilmington
303-912 New Braunfels
303-913 Otsego
303-914 London
303-915 Rochester
303-916 Appling
303-917 Vista
303-918 Newark
303-919 St. George
303-920 Charlotte
303-921 Akron
303-922 Wabash
303-923 Zanesville
303-925 Rochester
303-926 Reading
303-927 Grand Island
303-928 Charleston
303-929 Des Plaines
303-930 Denver
303-931 San Bernardino
303-932 Eugene
303-933 Nashville
303-934 Corpus Christi
303-935 Abilen
303-936 Denver
303-937 Greensburg
303-938 Flint
303-939 Corpus Christi
303-940 Zanesville
303-941 Eau Claire
303-942 Des Plaines
303-943 Newark
303-944 Pittsburgh
303-945 Binghamton
303-946 Honolulu
303-947 Van Nuys
303-948 Bakersfield
303-949 Van Nuys
303-951 Muskegon
303-952 San Jose
303-953 Springfield
303-954 Houston
303-955 Sacramento
303-956 Beaumont
303-957 Hartford
303-960 Newark
303-961 Los Angeles
303-962 Atlanta
303-963 Greenville
303-964 Doylestown
303-965 Doylestown
303-966 Jackson
303-967 Atlanta
303-968 Ozark
303-969 Cincinnati
303-971 Detroit
303-972 Alhambra
303-973 Fargo
303-974 Lancaster
303-975 Pikesville
303-977 Santa Ana
303-978 Naperville
303-979 Denver
303-980 Miami
303-981 Baltimore
303-982 Columbia
303-984 Evansville
303-985 Lynbrook
303-986 Wichita
303-987 Columbus
303-988 Tulsa
303-989 Greensboro
303-990 Walnut Creek
303-991 Flint
303-992 Fayetteville
303-993 Tyler
303-994 Sioux City
303-995 Denver
303-996 Charleston
303-998 Spokane
303-999 Akron