A trick I use to get every station in the country - I go to radio-locator, type in Wichita, KS (about the middle of the country), set radius to 2500 miles (their maximum):
Info Call Sign Frequency Dist./Dir./Signal City School Format
[Info] CJDC 890 AM 1637.4 mi. 327° Dawson Creek, BC Country
[BC] [Info] KDXU 890 AM 887.8 mi. 272° Saint George, UT News/Talk
[BC] [Info] KGGN 890 AM 186.8 mi. 056° Gladstone, MO Gospel Music
[BC] [Info] KIHC 890 AM 1296.7 mi. 269° Arroyo Grande, CA Religious
[Info] KJME 890 AM 398.7 mi. 280° Fountain, CO Nostalgia
[Info] KQLX 890 AM 616.4 mi. 001° Lisbon, ND Farm
[BC] [Info] KTLR 890 AM 146.7 mi. 183° Signal Strength 1 Oklahoma City, OK Talk
[Info] KTXV 890 AM 380.8 mi. 168° Mabank, TX Asian
[Info] KVOZ 890 AM 710.0 mi. 190° Del Mar Hills, TX Spanish
[Info] KYWN 890 AM 1065.5 mi. 298° Meridian, ID Talk
[BC] [Info] WAMG 890 AM 1401.0 mi. 069° Dedham, MA Spanish
[Info] WBAJ 890 AM 941.2 mi. 100° Blythewood, SC Religious
[Info] WFAB 890 AM 2333.0 mi. 116° Ceiba, PR Religious
[Info] WFKJ 890 AM 1084.2 mi. 076° Cashtown, PA Religious
[Info] WHJA 890 AM 626.2 mi. 130° Laurel, MS Blues
[Info] WHNC 890 AM 1048.1 mi. 089° Henderson, NC Gospel Music
[BC] [Info] WJTP 890 AM 769.3 mi. 107° Lithia Springs, GA Asian
[Info] WKNV 890 AM 916.5 mi. 087° Fairlawn, VA Gospel Music
[BC] [Info] WLS 890 AM 570.4 mi. 059° Chicago, IL News/Talk
[Info] WYAM 890 AM 619.6 mi. 107° Hartselle, AL Regional Mexican
[Info] XEAK1 890 AM 1218.6 mi. 191° Tarimoro, Mexico Unknown Format
[Info] XEBY1 890 AM 1155.6 mi. 180° Tuxpan, Mexico Unknown Format
[Info] XEFRT2 890 AM 1514.9 mi. 166° Comitan, Mexico Unknown Format
[Info] XEMAU 890 AM 992.6 mi. 203° Miguel Auza, Mexico Unknown Format
[Info] XENZ1 890 AM 1065.7 mi. 216° Culiacan, Mexico Unknown Format
[Info] XEPAN 890 AM 1292.6 mi. 194° Uruapan, Mexico Unknown Format
[Info] XEPC1 890 AM 1076.2 mi. 198° Zacatecas, Mexico Unknown Format
[Info] XEPNA 890 AM 1204.5 mi. 204° Tepic, Mexico Unknown Format
[Info] XEPOR 890 AM 1428.8 mi. 182° Putla de Guerrero, Mexico Unknown Format
[Info] XEPY1 890 AM 1237.7 mi. 156° Merida, Mexico Unknown Format
[Info] XETAP 890 AM 1601.1 mi. 168° Tapachula, Mexico Unknown Format
Then do the same for Alaska and Hawaii (there are none).