Area code 660 covers northern and western Missouri, including Kirksville, Sedalia, and Warrensburg. It was created in 1997 in a split of area code 816.
- 660-205
- Landline Number
- Sweet Springs, MO
- 660-206
- Landline Number
- Otterville, MO
- 660-207
- Landline Number
- Appleton City, MO
- 660-208
- Landline Number
- Blairstown, MO
- 660-209
- Landline Number
- Green Ridge, MO
- 660-218
- Landline Number
- Chilhowee, MO
- 660-219
- Landline Number
- Houstonia, MO
- 660-220
- Landline Number
- Malta Bend, MO
- 660-224
- Landline Number
- Maryville, MO
- 660-225
- Landline Number
- Centerview, MO
- 660-226
- Landline Number
- New Cambria, MO
- 660-231
- Landline Number
- Deepwater, MO
- 660-240
- Landline Number
- Chillicothe, MO
- 660-249
- Landline Number
- Malta Bend, MO
- 660-251
- Landline Number
- Lexington, MO
- 660-256
- Landline Number
- Rothville, MO
- 660-258
- Landline Number
- Brookfield, MO
- 660-259
- Landline Number
- Lexington, MO
- 660-261
- Landline Number
- Huntsville, MO
- 660-262
- Landline Number
- Warrensburg, MO
- 660-267
- Landline Number
- Amsterdam, MO
- 660-268
- Landline Number
- Brookfield, MO
- 660-273
- Landline Number
- Armstrong, MO
- 660-274
- Landline Number
- King City, MO
- 660-277
- Landline Number
- Huntsville, MO
- 660-279
- Landline Number
- Blackburn, MO
- 660-283
- Landline Number
- Blairstown, MO
- 660-288
- Landline Number
- Keytesville, MO
- 660-293
- Landline Number
- Keytesville, MO
- 660-295
- Landline Number
- Huntsville, MO
- 660-303
- Landline Number
- Lancaster, MO
- 660-319
- Landline Number
- Malta Bend, MO
- 660-333
- Landline Number
- Otterville, MO
- 660-335
- Landline Number
- Sweet Springs, MO
- 660-343
- Landline Number
- Otterville, MO
- 660-362
- Landline Number
- Warrensburg, MO
- 660-363
- Landline Number
- Blairstown, MO
- 660-366
- Landline Number
- Otterville, MO
- 660-367
- Landline Number
- Pattonsburg, MO
- 660-368
- Landline Number
- Otterville, MO
- 660-371
- Landline Number
- Concordia, MO
- 660-376
- Landline Number
- Marceline, MO
- 660-382
- Landline Number
- Princeton, MO
- 660-388
- Landline Number
- Huntsville, MO
- 660-394
- Landline Number
- Higginsville, MO
- 660-402
- Landline Number
- Marceline, MO
- 660-409
- Landline Number
- Houstonia, MO
- 660-422
- Landline Number
- Warrensburg, MO
- 660-429
- Landline Number
- Warrensburg, MO
- 660-434
- Landline Number
- Knox City, MO
- 660-439
- Landline Number
- New Hampton, MO
- 660-440
- Landline Number
- Brunswick, MO
- 660-442
- Landline Number
- Mound City, MO
- 660-454
- Landline Number
- Chilhowee, MO
- 660-457
- Landline Number
- Lancaster, MO
- 660-463
- Landline Number
- Concordia, MO
- 660-476
- Landline Number
- Appleton City, MO
- 660-498
- Landline Number
- Blairstown, MO
- 660-499
- Landline Number
- Creighton, MO
- 660-515
- Landline Number
- Sweet Springs, MO
- 660-527
- Landline Number
- Green Ridge, MO
- 660-535
- Landline Number
- King City, MO
- 660-538
- Landline Number
- Blackburn, MO
- 660-542
- Landline Number
- Carrollton, MO
- 660-543
- Landline Number
- Warrensburg, MO
- 660-548
- Landline Number
- Brunswick, MO
- 660-552
- Landline Number
- King City, MO
- 660-557
- Landline Number
- Sweet Springs, MO
- 660-562
- Landline Number
- Maryville, MO
- 660-563
- Landline Number
- Knob Noster, MO
- 660-564
- Landline Number
- Grant City, MO
- 660-568
- Landline Number
- Houstonia, MO
- 660-582
- Landline Number
- Maryville, MO
- 660-584
- Landline Number
- Higginsville, MO
- 660-586
- Landline Number
- New Franklin, MO
- 660-595
- Landline Number
- Malta Bend, MO
- 660-598
- Landline Number
- Rockville, MO
- 660-626
- Landline Number
- Kirksville, MO
- 660-627
- Landline Number
- Kirksville, MO
- 660-634
- Landline Number
- Brunswick, MO
- 660-644
- Landline Number
- Breckenridge, MO
- 660-646
- Landline Number
- Chillicothe, MO
- 660-655
- Landline Number
- Houstonia, MO
- 660-656
- Landline Number
- Centerview, MO
- 660-659
- Landline Number
- Meadville, MO
- 660-665
- Landline Number
- Kirksville, MO
- 660-666
- Landline Number
- Darlington, MO
- 660-668
- Landline Number
- Cole Camp, MO
- 660-671
- Landline Number
- Pickering, MO
- 660-672
- Landline Number
- Boonville, MO
- 660-675
- Landline Number
- Brookfield, MO
- 660-677
- Landline Number
- Armstrong, MO
- 660-678
- Landline Number
- Chilhowee, MO
- 660-684
- Landline Number
- Jamesport, MO
- 660-687
- Landline Number
- Knob Noster, MO
- 660-689
- Landline Number
- New Boston, MO
- 660-692
- Landline Number
- Powersville, MO
- 660-696
- Landline Number
- Deepwater, MO
- 660-697
- Landline Number
- Blackburn, MO
- 660-707
- Landline Number
- Chillicothe, MO
- 660-725
- Landline Number
- Burlingtn Jct, MO
- 660-729
- Landline Number
- Clearmont, MO
- 660-730
- Landline Number
- Kirksville, MO
- 660-744
- Landline Number
- Rock Port, MO
- 660-747
- Landline Number
- Warrensburg, MO
- 660-748
- Landline Number
- Princeton, MO
- 660-752
- Landline Number
- Chillicothe, MO
- 660-755
- Landline Number
- Mooresville, MO
- 660-766
- Landline Number
- Queen City, MO
- 660-772
- Landline Number
- Breckenridge, MO
- 660-775
- Landline Number
- Huntsville, MO
- 660-781
- Landline Number
- Schell City, MO
- 660-783
- Landline Number
- Stanberry, MO
- 660-785
- Landline Number
- Kirksville, MO
- 660-786
- Landline Number
- Grant City, MO
- 660-797
- Landline Number
- Green Ridge, MO
- 660-834
- Landline Number
- Pilot Grove, MO
- 660-835
- Landline Number
- Green Ridge, MO
- 660-839
- Landline Number
- Wooldridge, MO
- 660-841
- Landline Number
- Prairie Home, MO
- 660-846
- Landline Number
- Blackwater, MO
- 660-848
- Landline Number
- New Franklin, MO
- 660-849
- Landline Number
- Jamestown, MO
- 660-867
- Landline Number
- Eagleville, MO
- 660-874
- Landline Number
- Green City, MO
- 660-876
- Landline Number
- Gilman City, MO
- 660-882
- Landline Number
- Boonville, MO
- 660-889
- Landline Number
- Deepwater, MO
- 660-893
- Landline Number
- Blythedale, MO
- 660-927
- Landline Number
- Pickering, MO
- 660-937
- Landline Number
- Ravenwood, MO
- 660-938
- Landline Number
- Meadville, MO
- 660-944
- Landline Number
- Conception Junction, MO
- 660-947
- Landline Number
- Unionville, MO
- 660-952
- Landline Number
- Chilhowee, MO
- 660-955
- Landline Number
- Deepwater, MO
- 660-956
- Landline Number
- Kirksville, MO
- 660-960
- Landline Number
- Otterville, MO
- 660-974
- Landline Number
- Cole Camp, MO
- 660-992
- Landline Number
- Blackburn, MO