- Exchange 319-201 - Mount Pleasant
- Exchange 319-202 - Marion
- Exchange 319-208 - Davenport
- Exchange 319-209 - Davenport
- Exchange 319-210 - Marion
- Exchange 319-212
- Exchange 319-213 - Marion
- Exchange 319-214 - Vinton
- Exchange 319-215 - Waterloo
- Exchange 319-217 - Mount Pleasant
- Exchange 319-219
- Exchange 319-221 - Cedar Rapids
- Exchange 319-222 - Cedar Falls
- Exchange 319-223 - Newhall
- Exchange 319-224
- Exchange 319-225 - Cedar Rapids
- Exchange 319-226 - Waterloo
- Exchange 319-227
- Exchange 319-228 - Van Horne
- Exchange 319-230 - Waterloo
- Exchange 319-231 - Waterloo
- Exchange 319-232 - Waterloo
- Exchange 319-233 - Waterloo
- Exchange 319-234 - Waterloo
- Exchange 319-235 - Waterloo
- Exchange 319-236 - Waterloo
- Exchange 319-237 - Burlington
- Exchange 319-238 - Oelwein
- Exchange 319-239 - Waterloo
- Exchange 319-240 - Waterloo
- Exchange 319-241 - Marion
- Exchange 319-242 - Cedar Falls
- Exchange 319-243 - Cedar Falls
- Exchange 319-244 - Cedar Rapids
- Exchange 319-245 - Van Horne
- Exchange 319-246 - Fort Madison
- Exchange 319-247 - Cedar Rapids
- Exchange 319-248 - Iowa City
- Exchange 319-249 - Dodgeville
- Exchange 319-252 - Mediapolis
- Exchange 319-253
- Exchange 319-254
- Exchange 319-255 - Columbus Junction
- Exchange 319-256 - Wayland
- Exchange 319-257
- Exchange 319-258
- Exchange 319-260 - Mediapolis
- Exchange 319-261 - Marion
- Exchange 319-262 - Cedar Rapids
- Exchange 319-263 - Cedar Rapids
- Exchange 319-264 - Van Horne
- Exchange 319-265 - Marion
- Exchange 319-266 - Cedar Falls
- Exchange 319-267 - Allison
- Exchange 319-268 - Cedar Falls
- Exchange 319-269 - Waterloo
- Exchange 319-270 - Marion
- Exchange 319-271 - Mediapolis
- Exchange 319-272 - Waterloo
- Exchange 319-273 - Cedar Falls
- Exchange 319-274 - Waterloo
- Exchange 319-275 - Frederika
- Exchange 319-276 - Plainfield
- Exchange 319-277 - Cedar Falls
- Exchange 319-278 - Clarksville
- Exchange 319-279 - Readlyn
- Exchange 319-282 - Cedar Rapids
- Exchange 319-283 - Oelwein
- Exchange 319-284 - Oelwein
- Exchange 319-286 - Cedar Rapids
- Exchange 319-287 - Waterloo
- Exchange 319-288 - Davenport
- Exchange 319-289 - Van Horne
- Exchange 319-290 - Waterloo
- Exchange 319-291 - Waterloo
- Exchange 319-292 - Waterloo
- Exchange 319-293 - Keosauqua
- Exchange 319-294 - Cedar Rapids
- Exchange 319-295 - Cedar Rapids
- Exchange 319-296 - Waterloo
- Exchange 319-297 - Cedar Rapids
- Exchange 319-298 - Cedar Rapids
- Exchange 319-310 - Marion
- Exchange 319-313 - Keokuk
- Exchange 319-316 - Fort Madison
- Exchange 319-321 - Iowa City
- Exchange 319-322 - Cedar Rapids
- Exchange 319-323 - Van Horne
- Exchange 319-325 - Iowa City
- Exchange 319-327 - Independence
- Exchange 319-328 - Cedar Rapids
- Exchange 319-329 - Marion
- Exchange 319-330 - Iowa City
- Exchange 319-331 - Iowa City
- Exchange 319-332 - Independence
- Exchange 319-334 - Independence
- Exchange 319-335 - Iowa City
- Exchange 319-336 - Cedar Rapids
- Exchange 319-337 - Iowa City
- Exchange 319-338 - Iowa City
- Exchange 319-339 - Iowa City
- Exchange 319-341 - Iowa City
- Exchange 319-342 - La Porte City
- Exchange 319-345
- Exchange 319-346 - Parkersburg
- Exchange 319-347
- Exchange 319-350 - Marion
- Exchange 319-351 - Iowa City
- Exchange 319-352 - Waverly
- Exchange 319-353 - Iowa City
- Exchange 319-354 - Iowa City
- Exchange 319-355 - Cedar Rapids
- Exchange 319-356 - Iowa City
- Exchange 319-357 - Cedar Rapids
- Exchange 319-358 - Iowa City
- Exchange 319-360 - Marion
- Exchange 319-361 - Marion
- Exchange 319-362 - Cedar Rapids
- Exchange 319-363 - Cedar Rapids
- Exchange 319-364 - Cedar Rapids
- Exchange 319-365 - Cedar Rapids
- Exchange 319-366 - Cedar Rapids
- Exchange 319-367
- Exchange 319-368 - Cedar Rapids
- Exchange 319-369 - Cedar Rapids
- Exchange 319-371 - Fort Madison
- Exchange 319-372 - Fort Madison
- Exchange 319-373 - Marion
- Exchange 319-374 - Dodgeville
- Exchange 319-375 - Cedar Rapids
- Exchange 319-376 - Fort Madison
- Exchange 319-377 - Marion
- Exchange 319-378 - Cedar Rapids
- Exchange 319-384 - Iowa City
- Exchange 319-385
- Exchange 319-389 - Marion
- Exchange 319-390 - Cedar Rapids
- Exchange 319-392 - Danville
- Exchange 319-393 - Cedar Rapids
- Exchange 319-394 - Mediapolis
- Exchange 319-395 - Cedar Rapids
- Exchange 319-396 - Cedar Rapids
- Exchange 319-397 - Cantril
- Exchange 319-398 - Cedar Rapids
- Exchange 319-399 - Cedar Rapids
- Exchange 319-400 - Iowa City
- Exchange 319-404 - Waterloo
- Exchange 319-406 - Denver
- Exchange 319-415 - Waterloo
- Exchange 319-421 - Cedar Rapids
- Exchange 319-422 - Dodgeville
- Exchange 319-425 - Anamosa
- Exchange 319-427 - Waterloo
- Exchange 319-428 - Van Horne
- Exchange 319-429 - Waterloo
- Exchange 319-430 - Iowa City
- Exchange 319-431 - Marion
- Exchange 319-432 - Marion
- Exchange 319-433 - Waterloo
- Exchange 319-434 - Belle Plaine
- Exchange 319-435 - Coggon
- Exchange 319-436 - Shellsburg
- Exchange 319-437 - Prairieburg
- Exchange 319-438
- Exchange 319-439 - Elberon
- Exchange 319-440 - Marion
- Exchange 319-441 - Van Horne
- Exchange 319-442 - Keystone
- Exchange 319-443 - Urbana
- Exchange 319-444
- Exchange 319-445 - Cedar Rapids
- Exchange 319-446 - Atkins
- Exchange 319-447 - Marion
- Exchange 319-448
- Exchange 319-449 - Dodgeville
- Exchange 319-450 - Marion
- Exchange 319-451 - Van Horne
- Exchange 319-452 - Mediapolis
- Exchange 319-453 - Benton Township
- Exchange 319-454 - Blairstown
- Exchange 319-455
- Exchange 319-456
- Exchange 319-457 - Cedar Rapids
- Exchange 319-458
- Exchange 319-460
- Exchange 319-461
- Exchange 319-462 - Anamosa
- Exchange 319-463
- Exchange 319-464 - Waterloo
- Exchange 319-465 - Monticello
- Exchange 319-466 - Iowa City
- Exchange 319-467 - Iowa City
- Exchange 319-469
- Exchange 319-470 - Fort Madison
- Exchange 319-471 - Iowa City
- Exchange 319-472 - Vinton
- Exchange 319-473 - Keokuk
- Exchange 319-474
- Exchange 319-475 - Mount Auburn
- Exchange 319-476 - Dysart
- Exchange 319-477 - Garrison
- Exchange 319-478
- Exchange 319-479 - Clutier
- Exchange 319-480 - Anamosa
- Exchange 319-481 - Anamosa
- Exchange 319-482 - Martelle
- Exchange 319-483 - Waverly
- Exchange 319-484 - Olin
- Exchange 319-487 - Dodgeville
- Exchange 319-489 - Morley
- Exchange 319-490 - Marion
- Exchange 319-491 - Marion
- Exchange 319-493 - Waterloo
- Exchange 319-494 - Mount Sterling
- Exchange 319-495 - Cedar Rapids
- Exchange 319-498 - Birmingham
- Exchange 319-504 - Waterloo
- Exchange 319-509 - Oelwein
- Exchange 319-512 - Iowa City
- Exchange 319-520 - Keokuk
- Exchange 319-521 - Marion
- Exchange 319-522 - Mediapolis
- Exchange 319-523
- Exchange 319-524 - Keokuk
- Exchange 319-525 - Hartwick
- Exchange 319-526 - Keokuk
- Exchange 319-527 - Morning Sun
- Exchange 319-528
- Exchange 319-530 - Iowa City
- Exchange 319-531 - Marion
- Exchange 319-533 - Marion
- Exchange 319-534 - Davenport
- Exchange 319-535 - Mount Vernon
- Exchange 319-537 - Mount Pleasant
- Exchange 319-538 - Marion
- Exchange 319-540 - Marion
- Exchange 319-541 - Iowa City
- Exchange 319-542 - Van Horne
- Exchange 319-543 - Cedar Rapids
- Exchange 319-544 - Mediapolis
- Exchange 319-545 - North Liberty
- Exchange 319-547 - Mediapolis
- Exchange 319-548 - Cedar Rapids
- Exchange 319-550 - Marion
- Exchange 319-551 - Marion
- Exchange 319-553 - Cedar Falls
- Exchange 319-558 - Cedar Rapids
- Exchange 319-560 - Marion
- Exchange 319-561 - Fort Madison
- Exchange 319-567 - Van Horne
- Exchange 319-572 - Burlington
- Exchange 319-573 - Marion
- Exchange 319-575 - Cedar Falls
- Exchange 319-576 - Davenport
- Exchange 319-578 - Cedar Rapids
- Exchange 319-582 - Van Horne
- Exchange 319-585 - Cedar Rapids
- Exchange 319-591
- Exchange 319-592 - Bonaparte
- Exchange 319-594 - Iowa City
- Exchange 319-596 - Waverly
- Exchange 319-598 - Washington
- Exchange 319-601 - Davenport
- Exchange 319-610 - Waterloo
- Exchange 319-614 - Urbandale
- Exchange 319-621 - Iowa City
- Exchange 319-622 - Amana
- Exchange 319-623 - Ladora
- Exchange 319-624 - North Liberty
- Exchange 319-625 - North Liberty
- Exchange 319-626 - North Liberty
- Exchange 319-627 - West Liberty
- Exchange 319-628
- Exchange 319-629
- Exchange 319-631 - Iowa City
- Exchange 319-632 - North Liberty
- Exchange 319-633 - Cedar Rapids
- Exchange 319-634 - Aurora
- Exchange 319-635
- Exchange 319-636
- Exchange 319-637 - Mediapolis
- Exchange 319-638 - Oran
- Exchange 319-639 - South English
- Exchange 319-640 - Marion
- Exchange 319-642
- Exchange 319-643 - West Branch
- Exchange 319-644
- Exchange 319-645
- Exchange 319-646 - Wellman
- Exchange 319-647 - Victor
- Exchange 319-648
- Exchange 319-651 - Marion
- Exchange 319-652 - Cedar Rapids
- Exchange 319-653
- Exchange 319-654 - Cedar Rapids
- Exchange 319-655 - Millersburg
- Exchange 319-656 - Kalona
- Exchange 319-657
- Exchange 319-658
- Exchange 319-660
- Exchange 319-661
- Exchange 319-662
- Exchange 319-664 - North English
- Exchange 319-665 - North Liberty
- Exchange 319-667 - South English
- Exchange 319-668
- Exchange 319-669 - Fort Madison
- Exchange 319-670 - Keokuk
- Exchange 319-671 - Urbandale
- Exchange 319-674 - Cedar Rapids
- Exchange 319-677 - Davenport
- Exchange 319-679 - Hills
- Exchange 319-682 - Van Horne
- Exchange 319-683 - Iowa City
- Exchange 319-684 - Van Horne
- Exchange 319-685 - Guernsey
- Exchange 319-688 - Iowa City
- Exchange 319-693 - Marion
- Exchange 319-694
- Exchange 319-695
- Exchange 319-696
- Exchange 319-698
- Exchange 319-720 - Marion
- Exchange 319-721 - Marion
- Exchange 319-722 - Van Horne
- Exchange 319-723
- Exchange 319-725
- Exchange 319-726
- Exchange 319-727 - Van Horne
- Exchange 319-728
- Exchange 319-729
- Exchange 319-730 - Marion
- Exchange 319-731 - Marion
- Exchange 319-734 - Marion
- Exchange 319-735 - Van Horne
- Exchange 319-738 - Keswick
- Exchange 319-739 - Marion
- Exchange 319-741 - Marengo
- Exchange 319-742 - Mediapolis
- Exchange 319-743 - Cedar Rapids
- Exchange 319-745 - Cedar Rapids
- Exchange 319-750 - Burlington
- Exchange 319-752 - Burlington
- Exchange 319-753 - Burlington
- Exchange 319-754 - Burlington
- Exchange 319-758 - Burlington
- Exchange 319-759 - Burlington
- Exchange 319-766
- Exchange 319-768
- Exchange 319-773 - Cedar Rapids
- Exchange 319-775 - Marion
- Exchange 319-783 - Dodgeville
- Exchange 319-784 - Cedar Rapids
- Exchange 319-785 - Mediapolis
- Exchange 319-786 - Cedar Rapids
- Exchange 319-788 - Reinbeck
- Exchange 319-790 - Marion
- Exchange 319-795 - Keokuk
- Exchange 319-796 - Stockport
- Exchange 319-804 - Marion
- Exchange 319-821 - Anamosa
- Exchange 319-822 - Dunkerton
- Exchange 319-823 - Grundy Center
- Exchange 319-824
- Exchange 319-825
- Exchange 319-827 - Jesup
- Exchange 319-828 - North Liberty
- Exchange 319-830 - Waterloo
- Exchange 319-832 - Cedar Rapids
- Exchange 319-833 - Waterloo
- Exchange 319-834 - Iowa City
- Exchange 319-835
- Exchange 319-836
- Exchange 319-837
- Exchange 319-838
- Exchange 319-840 - Mediapolis
- Exchange 319-841 - Ely
- Exchange 319-842 - Alburnett
- Exchange 319-845 - Fairfax
- Exchange 319-846 - Fairfax
- Exchange 319-848 - Ely
- Exchange 319-849 - Center Point
- Exchange 319-850 - Burlington
- Exchange 319-851 - Palo
- Exchange 319-852 - Van Horne
- Exchange 319-853 - Cedar Rapids
- Exchange 319-854 - Springville
- Exchange 319-855 - Iowa City
- Exchange 319-856 - Van Horne
- Exchange 319-857 - Swisher
- Exchange 319-858 - Mediapolis
- Exchange 319-859 - Cedar Falls
- Exchange 319-861 - Cedar Rapids
- Exchange 319-862 - Cedar Rapids
- Exchange 319-863
- Exchange 319-865
- Exchange 319-866 - Cedar Rapids
- Exchange 319-868 - Morning Sun
- Exchange 319-874 - Waterloo
- Exchange 319-877 - Cedar Rapids
- Exchange 319-878
- Exchange 319-882 - Tripoli
- Exchange 319-883 - Waterloo
- Exchange 319-884 - Cedar Rapids
- Exchange 319-885 - Shell Rock
- Exchange 319-887 - Iowa City
- Exchange 319-892 - Marion
- Exchange 319-895 - Mount Vernon
- Exchange 319-896 - Cedar Rapids
- Exchange 319-899 - Marion
- Exchange 319-929 - Marion
- Exchange 319-930 - Iowa City
- Exchange 319-931
- Exchange 319-934 - Quasqueton
- Exchange 319-935 - Winthrop
- Exchange 319-936 - Iowa City
- Exchange 319-937 - Mediapolis
- Exchange 319-938
- Exchange 319-939 - Waterloo
- Exchange 319-961 - Waterloo
- Exchange 319-977 - Van Horne
- Exchange 319-981 - Marion
- Exchange 319-983 - New Hartford
- Exchange 319-984 - Denver
- Exchange 319-985 - Dodgeville
- Exchange 319-986
- Exchange 319-987
- Exchange 319-988 - Hudson
- Exchange 319-989 - Dike
- Exchange 319-999 - Marion