| Prefix | Primary City |
|---|---|
| 509-200 | Walla Walla |
| 509-201 | Ellensburg |
| 509-202 | Spokane |
| 509-203 | Grandview |
| 509-204 | Cle Elum |
| 509-205 | Kennewick |
| 509-207 | Republic |
| 509-209 | Spokane |
| 509-210 | Liberty Lake |
| 509-212 | Kennewick |
| 509-214 | Newman Lake |
| 509-215 | Harrington |
| 509-216 | Spokane |
| 509-217 | Spokane |
| 509-218 | Spokane |
| 509-219 | Bingen |
| 509-220 | Spokane |
| 509-221 | Kennewick |
| 509-222 | Kennewick |
| 509-223 | Loomis |
| 509-225 | Yakima |
| 509-226 | Newman Lake |
| 509-227 | Spokane |
| 509-228 | Spokane |
| 509-229 | Uniontown |
| 509-230 | Spokane |
| 509-232 | Spokane |
| 509-233 | Loon Lake |
| 509-234 | Connell |
| 509-235 | Cheney |
| 509-236 | Washington |
| 509-237 | Ephrata |
| 509-238 | Washington |
| 509-239 | Washington |
| 509-240 | Walla Walla |
| 509-241 | Spokane |
| 509-242 | Spokane |
| 509-243 | Asotin |
| 509-244 | Medical Lake |
| 509-245 | Spangle |
| 509-246 | Soap Lake |
| 509-247 | Spokane |
| 509-248 | Yakima |
| 509-249 | Yakima |
| 509-250 | Goldendale |
| 509-251 | Spokane |
| 509-252 | Spokane |
| 509-253 | Harrington |
| 509-254 | Clarkston |
| 509-255 | Liberty Lake |
| 509-256 | Anatone |
| 509-257 | Sprague |
| 509-258 | Springdale |
| 509-259 | Sprague |
| 509-260 | Cle Elum |
| 509-261 | Goldendale |
| 509-262 | Deer Park |
| 509-263 | Spokane |
| 509-264 | East Wenatchee |
| 509-265 | Connell |
| 509-266 | Washington |
| 509-267 | Spokane |
| 509-269 | Mesa |
| 509-270 | Spokane |
| 509-271 | Spokane |
| 509-272 | Spokane |
| 509-275 | Spokane |
| 509-276 | Deer Park |
| 509-277 | Spokane |
| 509-278 | Spokane |
| 509-279 | Spokane |
| 509-280 | Spokane |
| 509-281 | White Salmon |
| 509-282 | Washtucna |
| 509-283 | Fairfield |
| 509-284 | Tekoa |
| 509-285 | Oakesdale |
| 509-286 | Rockford |
| 509-287 | Farmington |
| 509-288 | Colfax |
| 509-289 | Ephrata |
| 509-290 | Spokane |
| 509-291 | Rockford |
| 509-292 | Washington |
| 509-293 | East Wenatchee |
| 509-294 | Kennewick |
| 509-295 | Clarkston |
| 509-297 | Washington |
| 509-299 | Medical Lake |
| 509-301 | Walla Walla |
| 509-302 | Pasco |
| 509-303 | Prosser |
| 509-304 | Cle Elum |
| 509-305 | Sunnyside |
| 509-306 | Ellensburg |
| 509-307 | Yakima |
| 509-308 | Kennewick |
| 509-309 | Spokane |
| 509-310 | White Salmon |
| 509-312 | Ellensburg |
| 509-313 | Spokane |
| 509-314 | Toppenish |
| 509-315 | Spokane |
| 509-316 | Pasco |
| 509-317 | Yakima |
| 509-318 | Connell |
| 509-319 | Spokane |
| 509-320 | Hay |
| 509-321 | Spokane |
| 509-322 | Omak |
| 509-323 | Spokane |
| 509-324 | Spokane |
| 509-325 | Spokane |
| 509-326 | Spokane |
| 509-327 | Spokane |
| 509-328 | Spokane |
| 509-329 | Spokane |
| 509-330 | Pullman |
| 509-331 | Othello |
| 509-332 | Pullman |
| 509-333 | Pullman |
| 509-334 | Pullman |
| 509-335 | Pullman |
| 509-336 | Pullman |
| 509-337 | Waitsburg |
| 509-338 | Pullman |
| 509-339 | Pullman |
| 509-340 | Spokane |
| 509-341 | Twisp |
| 509-342 | Spokane |
| 509-343 | Spokane |
| 509-344 | Spokane |
| 509-345 | Coulee City |
| 509-346 | Othello |
| 509-347 | Ritzville |
| 509-348 | Davenport |
| 509-349 | Warden |
| 509-350 | Moses Lake |
| 509-351 | Spokane |
| 509-352 | Spokane |
| 509-353 | Spokane |
| 509-354 | Spokane |
| 509-355 | Spokane |
| 509-356 | Spokane |
| 509-357 | Spokane |
| 509-358 | Spokane |
| 509-359 | Cheney |
| 509-361 | Moses Lake |
| 509-362 | Deer Park |
| 509-363 | Spokane |
| 509-364 | Glenwood |
| 509-365 | Lyle |
| 509-366 | Kennewick |
| 509-367 | Yakima |
| 509-368 | Spokane |
| 509-369 | Wahkiacus |
| 509-370 | Spokane |
| 509-371 | Richland |
| 509-372 | Richland |
| 509-373 | Richland |
| 509-374 | Kennewick |
| 509-375 | Richland |
| 509-376 | Richland |
| 509-377 | Washington |
| 509-378 | Kennewick |
| 509-379 | Yakima |
| 509-380 | Pasco |
| 509-381 | Spokane |
| 509-382 | Dayton |
| 509-383 | Granger |
| 509-384 | Roosevelt |
| 509-385 | Spokane |
| 509-386 | Walla Walla |
| 509-387 | East Wenatchee |
| 509-388 | Yakima |
| 509-389 | Spokane |
| 509-390 | Soap Lake |
| 509-391 | Sunnyside |
| 509-392 | Kennewick |
| 509-393 | East Wenatchee |
| 509-394 | Touchet |
| 509-395 | Trout Lake |
| 509-396 | Kennewick |
| 509-397 | Colfax |
| 509-398 | Ephrata |
| 509-399 | Hay |
| 509-404 | Dayton |
| 509-406 | Yakima |
| 509-412 | Pasco |
| 509-413 | Spokane |
| 509-414 | Washington |
| 509-415 | East Wenatchee |
| 509-416 | Pasco |
| 509-420 | Richland |
| 509-421 | East Wenatchee |
| 509-422 | Omak |
| 509-423 | East Wenatchee |
| 509-424 | Yakima |
| 509-426 | Yakima |
| 509-427 | Stevenson |
| 509-428 | Ritzville |
| 509-429 | Omak |
| 509-430 | Pasco |
| 509-431 | Republic |
| 509-432 | Pullman |
| 509-433 | East Wenatchee |
| 509-434 | Spokane |
| 509-435 | Spokane |
| 509-436 | East Wenatchee |
| 509-438 | Kennewick |
| 509-439 | Sunnyside |
| 509-440 | Kennewick |
| 509-442 | Ione |
| 509-443 | Spokane |
| 509-444 | Spokane |
| 509-445 | Usk |
| 509-446 | Metaline Falls |
| 509-447 | Newport |
| 509-448 | Spokane |
| 509-449 | Bridgeport |
| 509-452 | Yakima |
| 509-453 | Yakima |
| 509-454 | Yakima |
| 509-455 | Spokane |
| 509-456 | Spokane |
| 509-457 | Yakima |
| 509-458 | Spokane |
| 509-459 | Spokane |
| 509-460 | Kennewick |
| 509-461 | Spokane |
| 509-462 | Spokane |
| 509-463 | Spokane |
| 509-464 | Spokane |
| 509-465 | Spokane |
| 509-466 | Spokane |
| 509-467 | Spokane |
| 509-468 | Spokane |
| 509-469 | Yakima |
| 509-470 | East Wenatchee |
| 509-471 | Spokane |
| 509-472 | Spokane |
| 509-473 | Spokane |
| 509-474 | Spokane |
| 509-475 | Spokane |
| 509-476 | Loomis |
| 509-477 | Spokane |
| 509-478 | Thornton |
| 509-479 | Spokane |
| 509-480 | Yakima |
| 509-481 | Spokane |
| 509-482 | Spokane |
| 509-483 | Spokane |
| 509-484 | Spokane |
| 509-485 | Washington |
| 509-486 | Riverside |
| 509-487 | Spokane |
| 509-488 | Othello |
| 509-489 | Spokane |
| 509-491 | Kennewick |
| 509-492 | Pasco |
| 509-493 | White Salmon |
| 509-494 | Yakima |
| 509-495 | Spokane |
| 509-496 | Spokane |
| 509-497 | Benton City |
| 509-498 | Spokane |
| 509-499 | Spokane |
| 509-515 | Sunnyside |
| 509-520 | Walla Walla |
| 509-521 | Pasco |
| 509-522 | Walla Walla |
| 509-523 | Rosalia |
| 509-524 | Walla Walla |
| 509-525 | Walla Walla |
| 509-526 | Walla Walla |
| 509-527 | Walla Walla |
| 509-528 | Pasco |
| 509-529 | Walla Walla |
| 509-531 | Pasco |
| 509-532 | Spokane |
| 509-533 | Spokane |
| 509-534 | Spokane |
| 509-535 | Spokane |
| 509-536 | Spokane |
| 509-537 | Spokane |
| 509-538 | Washington |
| 509-539 | Pasco |
| 509-540 | Walla Walla |
| 509-542 | Pasco |
| 509-543 | Pasco |
| 509-544 | Pasco |
| 509-545 | Pasco |
| 509-546 | Pasco |
| 509-547 | Pasco |
| 509-548 | East Wenatchee |
| 509-549 | Hay |
| 509-550 | Usk |
| 509-551 | Kennewick |
| 509-552 | Clarkston |
| 509-553 | Colfax |
| 509-554 | Richland |
| 509-556 | Washington |
| 509-557 | Omak |
| 509-559 | Cheney |
| 509-560 | Loomis |
| 509-561 | Spokane |
| 509-562 | Spokane |
| 509-563 | Colville |
| 509-565 | Spokane |
| 509-566 | Pomeroy |
| 509-567 | Pasco |
| 509-568 | Spokane |
| 509-569 | Rosalia |
| 509-570 | Spokane |
| 509-571 | Yakima |
| 509-572 | Kennewick |
| 509-573 | Yakima |
| 509-574 | Yakima |
| 509-575 | Yakima |
| 509-576 | Yakima |
| 509-577 | Yakima |
| 509-578 | Richland |
| 509-579 | Kennewick |
| 509-580 | Selah |
| 509-581 | Kennewick |
| 509-582 | Kennewick |
| 509-584 | Wapato |
| 509-585 | Kennewick |
| 509-586 | Kennewick |
| 509-587 | Brewster |
| 509-588 | Benton City |
| 509-589 | Usk |
| 509-590 | Spokane |
| 509-591 | Kennewick |
| 509-592 | Colton |
| 509-593 | Walla Walla |
| 509-594 | Yakima |
| 509-595 | Colton |
| 509-597 | Uniontown |
| 509-598 | Spokane |
| 509-599 | Spokane |
| 509-600 | Bridgeport |
| 509-607 | Ellensburg |
| 509-619 | Kennewick |
| 509-620 | Coulee Dam |
| 509-621 | Newman Lake |
| 509-622 | Spokane |
| 509-623 | Spokane |
| 509-624 | Spokane |
| 509-625 | Spokane |
| 509-626 | Spokane |
| 509-627 | Kennewick |
| 509-628 | Kennewick |
| 509-629 | Walla Walla |
| 509-630 | East Wenatchee |
| 509-631 | Coulee Dam |
| 509-632 | Coulee City |
| 509-633 | Coulee Dam |
| 509-634 | Keller |
| 509-635 | Garfield |
| 509-636 | Creston |
| 509-637 | White Salmon |
| 509-638 | Spokane |
| 509-639 | Almira |
| 509-640 | Colville |
| 509-641 | Wilbur |
| 509-642 | Harrah |
| 509-643 | Sunnyside |
| 509-645 | Brewster |
| 509-646 | Washtucna |
| 509-647 | Wilbur |
| 509-648 | Washington |
| 509-649 | Cle Elum |
| 509-650 | Ritzville |
| 509-651 | Deer Park |
| 509-653 | Naches |
| 509-654 | Yakima |
| 509-655 | Spokane |
| 509-656 | Cle Elum |
| 509-657 | Endicott |
| 509-658 | Washington |
| 509-659 | Ritzville |
| 509-660 | Ritzville |
| 509-661 | East Wenatchee |
| 509-662 | East Wenatchee |
| 509-663 | East Wenatchee |
| 509-664 | East Wenatchee |
| 509-665 | East Wenatchee |
| 509-667 | East Wenatchee |
| 509-668 | East Wenatchee |
| 509-669 | East Wenatchee |
| 509-670 | East Wenatchee |
| 509-671 | Usk |
| 509-672 | Washington |
| 509-673 | Tieton |
| 509-674 | Cle Elum |
| 509-675 | Colville |
| 509-676 | Walla Walla |
| 509-677 | Lind |
| 509-678 | Cowiche |
| 509-679 | East Wenatchee |
| 509-680 | Colville |
| 509-681 | Coulee City |
| 509-682 | East Wenatchee |
| 509-683 | Washington |
| 509-684 | Colville |
| 509-685 | Colville |
| 509-686 | Bridgeport |
| 509-687 | East Wenatchee |
| 509-688 | Spokane |
| 509-689 | Brewster |
| 509-690 | Colville |
| 509-691 | Spokane |
| 509-692 | Spokane |
| 509-693 | Spokane |
| 509-694 | Spokane |
| 509-695 | Spokane |
| 509-696 | Spokane |
| 509-697 | Selah |
| 509-698 | Selah |
| 509-699 | Brewster |
| 509-701 | Spokane |
| 509-703 | Spokane |
| 509-707 | Moses Lake |
| 509-710 | Spokane |
| 509-713 | Richland |
| 509-714 | Spokane |
| 509-715 | Pullman |
| 509-717 | Ephrata |
| 509-720 | Spokane |
| 509-721 | Davenport |
| 509-722 | Inchelium |
| 509-723 | Spokane |
| 509-724 | Spokane |
| 509-725 | Davenport |
| 509-726 | East Wenatchee |
| 509-727 | Kennewick |
| 509-728 | Yakima |
| 509-730 | Walla Walla |
| 509-731 | Yakima |
| 509-732 | Northport |
| 509-733 | Brewster |
| 509-734 | Kennewick |
| 509-735 | Kennewick |
| 509-736 | Kennewick |
| 509-737 | Kennewick |
| 509-738 | Evans |
| 509-739 | Almira |
| 509-740 | Omak |
| 509-741 | East Wenatchee |
| 509-742 | Spokane |
| 509-744 | Spokane |
| 509-745 | Washington |
| 509-747 | Spokane |
| 509-748 | Wahkiacus |
| 509-749 | Washington |
| 509-750 | Moses Lake |
| 509-751 | Clarkston |
| 509-752 | Spokane |
| 509-753 | Spokane |
| 509-754 | Ephrata |
| 509-755 | Spokane |
| 509-756 | Spokane |
| 509-757 | Spokane |
| 509-758 | Clarkston |
| 509-759 | Yakima |
| 509-760 | Moses Lake |
| 509-761 | Moses Lake |
| 509-762 | Moses Lake |
| 509-763 | East Wenatchee |
| 509-764 | Moses Lake |
| 509-765 | Moses Lake |
| 509-766 | Moses Lake |
| 509-767 | Wahkiacus |
| 509-768 | Spokane |
| 509-769 | Clarkston |
| 509-770 | Moses Lake |
| 509-771 | Moses Lake |
| 509-772 | Goldendale |
| 509-773 | Goldendale |
| 509-774 | White Salmon |
| 509-775 | Republic |
| 509-776 | Washington |
| 509-777 | Spokane |
| 509-778 | Prosser |
| 509-779 | Curlew |
| 509-780 | Clarkston |
| 509-781 | Prosser |
| 509-782 | Cashmere |
| 509-783 | Kennewick |
| 509-784 | East Wenatchee |
| 509-785 | Quincy |
| 509-786 | Prosser |
| 509-787 | Quincy |
| 509-788 | Prosser |
| 509-789 | Spokane |
| 509-790 | Sunnyside |
| 509-792 | Pasco |
| 509-793 | Moses Lake |
| 509-794 | Quincy |
| 509-795 | Spokane |
| 509-796 | Medical Lake |
| 509-797 | Quincy |
| 509-808 | Spokane |
| 509-818 | Spokane |
| 509-820 | Kennewick |
| 509-821 | Deer Park |
| 509-822 | Spokane |
| 509-823 | Yakima |
| 509-826 | Omak |
| 509-828 | Spokane |
| 509-829 | Zillah |
| 509-830 | Sunnyside |
| 509-831 | Sunnyside |
| 509-832 | Prosser |
| 509-833 | Yakima |
| 509-834 | Yakima |
| 509-835 | Spokane |
| 509-836 | Sunnyside |
| 509-837 | Sunnyside |
| 509-838 | Spokane |
| 509-839 | Sunnyside |
| 509-840 | Sunnyside |
| 509-841 | Waitsburg |
| 509-842 | Spokane |
| 509-843 | Pomeroy |
| 509-844 | Spokane |
| 509-845 | Pasco |
| 509-846 | Omak |
| 509-847 | Spokane |
| 509-848 | Harrah |
| 509-849 | Waitsburg |
| 509-850 | Spokane |
| 509-851 | Pasco |
| 509-852 | Cle Elum |
| 509-853 | Yakima |
| 509-854 | Granger |
| 509-855 | Moses Lake |
| 509-856 | Beverly |
| 509-857 | Thorp |
| 509-859 | Ellensburg |
| 509-860 | East Wenatchee |
| 509-861 | Omak |
| 509-863 | Spokane |
| 509-865 | Toppenish |
| 509-868 | Spokane |
| 509-869 | Spokane |
| 509-871 | Loomis |
| 509-872 | Washington |
| 509-874 | White Swan |
| 509-875 | Prosser |
| 509-876 | Walla Walla |
| 509-877 | Wapato |
| 509-878 | Palouse |
| 509-879 | Spokane |
| 509-880 | Spokane |
| 509-881 | East Wenatchee |
| 509-882 | Grandview |
| 509-883 | East Wenatchee |
| 509-884 | East Wenatchee |
| 509-885 | East Wenatchee |
| 509-886 | East Wenatchee |
| 509-887 | Benge |
| 509-888 | East Wenatchee |
| 509-889 | Spokane |
| 509-891 | Spokane |
| 509-892 | Spokane |
| 509-893 | Spokane |
| 509-894 | Mabton |
| 509-895 | Yakima |
| 509-896 | Bickleton |
| 509-897 | Walla Walla |
| 509-898 | Moses Lake |
| 509-899 | Ellensburg |
| 509-901 | Yakima |
| 509-903 | Liberty Lake |
| 509-910 | Yakima |
| 509-913 | Othello |
| 509-919 | Spokane |
| 509-921 | Spokane |
| 509-922 | Spokane |
| 509-923 | Pateros |
| 509-924 | Spokane |
| 509-925 | Ellensburg |
| 509-926 | Spokane |
| 509-927 | Spokane |
| 509-928 | Spokane |
| 509-929 | Ellensburg |
| 509-930 | Yakima |
| 509-931 | Spokane |
| 509-932 | Mattawa |
| 509-933 | Ellensburg |
| 509-935 | Chewelah |
| 509-936 | Chewelah |
| 509-937 | Valley |
| 509-939 | Spokane |
| 509-940 | Richland |
| 509-941 | Yakima |
| 509-942 | Richland |
| 509-943 | Richland |
| 509-944 | Spokane |
| 509-945 | Yakima |
| 509-946 | Richland |
| 509-947 | Kennewick |
| 509-948 | Kennewick |
| 509-949 | Yakima |
| 509-951 | Spokane |
| 509-952 | Yakima |
| 509-953 | Spokane |
| 509-954 | Spokane |
| 509-955 | Yakima |
| 509-956 | Walla Walla |
| 509-960 | Spokane |
| 509-961 | Yakima |
| 509-962 | Ellensburg |
| 509-963 | Ellensburg |
| 509-964 | Thorp |
| 509-965 | Yakima |
| 509-966 | Yakima |
| 509-967 | Richland |
| 509-968 | Thorp |
| 509-969 | Yakima |
| 509-972 | Yakima |
| 509-973 | Washington |
| 509-977 | Creston |
| 509-978 | Keller |
| 509-979 | Spokane |
| 509-980 | Washtucna |
| 509-981 | Spokane |
| 509-982 | Odessa |
| 509-983 | Hay |
| 509-984 | Spokane |
| 509-985 | Yakima |
| 509-987 | Kennewick |
| 509-988 | Odessa |
| 509-989 | Moses Lake |
| 509-990 | Spokane |
| 509-991 | Spokane |
| 509-993 | Spokane |
| 509-994 | Spokane |
| 509-995 | Spokane |
| 509-996 | Winthrop |
| 509-997 | Twisp |
| 509-998 | Spokane |
| 509-999 | Spokane |