| Date | Time (UT) | Latitude | Longitude | Depth (km) | Magnitude | State/Province | ID | Details | |
| 2004/01/07 | 07:51:38 | 43.571 | -110.383 | 3.1 | 5 | Wyoming | usp000chbr | 20040107075138 Mechanism | |
| 2004/01/07 | 08:44:21 | 43.597 | -110.405 | 5.0 | 4 | Wyoming | usp000chbw | 20040107084421 Mechanism | |
| 2004/01/07 | 09:23:47 | 43.586 | -110.404 | 5.0 | 4 | Wyoming | usp000chbz | 20040107092347 Mechanism | |
| 2004/03/17 | 23:53:07 | 35.731 | -121.075 | 4.3 | 4.51 | California | nc21351360 | 20040317235307 Mechanism | |
| 2004/03/22 | 12:09:56 | 36.855 | -104.851 | 5.0 | 4.4 | New Mexico | usp000cqm5 | 20040322120956 Mechanism | |
| 2004/04/07 | 15:54:12 | 43.603 | -110.397 | 5.0 | 4 | Wyoming | usp000crxj | 20040407155412 Mechanism | |
| 2004/05/16 | 01:29:40 | 37.280 | -114.840 | 0.0 | 4.5 | Nevada | nn00105745 | 20040516012940 Mechanism | |
| 2004/05/23 | 09:22:05 | 32.525 | -104.566 | 5.0 | 4 | New Mexico | usp000cvz7 | 20040523092205 Mechanism | |
| 2004/06/15 | 08:34:21 | 36.726 | -89.683 | 4.5 | 3.5 | Missouri | nm605494 | 20040615083421 Mechanism | |
| 2004/06/27 | 07:00:13 | 42.092 | -120.246 | 10.0 | 3.9 | Oregon | uw10615158 | 20040627070013 Mechanism | |
| 2004/06/28 | 06:10:52 | 41.460 | -88.900 | 10.0 | 4.2 | Illinois | usp000cz1k | 20040628061052 Mechanism | |
| 2004/06/30 | 12:21:45 | 42.079 | -120.237 | 9.3 | 4.4 | Oregon | uw10616293 | 20040630122145 Mechanism | |
| 2004/07/12 | 16:45:00 | 44.334 | -124.489 | 28.8 | 4.9 | Oregon | uw10609208 | 20040712164500 Mechanism | |
| 2004/07/16 | 03:25:17 | 36.865 | -89.175 | 4.4 | 3.5 | Missouri | nm605507 | 20040716032517 Mechanism | |
| 2004/07/16 | 12:17:30 | 40.633 | -95.549 | 5.0 | 3.5 | Iowa | usp000d09f | 20040716121730 Mechanism | |
| 2004/07/22 | 20:26:27 | 42.090 | -120.240 | -0.5 | 4.3 | Oregon | uw10614338 | 20040722202627 Mechanism | |
| 2004/08/01 | 06:50:46 | 36.874 | -105.104 | 5.0 | 4.3 | New Mexico | usp000d181 | 20040801065046 Mechanism | |
| 2004/08/04 | 23:55:26 | 43.696 | -78.254 | 4.8 | 3 | Ontario, Canada | ld2004080400 | 20040804235526 Mechanism | |
| 2004/08/14 | 20:14:43 | 43.173 | -111.018 | 2.3 | 3.6 | Wyoming | usp000d25m | 20040814201443 Mechanism | |
| 2004/08/16 | 21:05:54 | 46.673 | -121.473 | -1.1 | 4.01 | Washington | uw10611773 | 20040816210554 Mechanism | |
| 2004/08/19 | 06:06:03 | 44.664 | -124.300 | 27.3 | 4.7 | Oregon | uw10613523 | 20040819060603 Mechanism | |
| 2004/08/19 | 23:51:49 | 33.203 | -86.968 | 5.0 | 3.6 | Alabama | usp000d2fz | 20040819235149 Mechanism | |
| 2004/08/26 | 23:11:37 | 64.750 | -86.270 | 18.0 | 4.6 | NU, Canada | usp000d2xj | 20040826231137 Mechanism | |
| 2004/09/12 | 13:05:19 | 39.604 | -85.662 | 2.4 | 3.8 | Indiana | nm605535 | 20040912130519 Mechanism | |
| 2004/10/01 | 19:22:18 | 37.391 | -117.090 | 6.2 | 3.9 | Nevada | nn00115656 | 20041001192218 Mechanism | |
| 2004/11/07 | 06:54:59 | 38.227 | -108.913 | 3.6 | 4.1 | Colorado | uu50292720 | 20041107065459 Mechanism | |
| 2004/11/07 | 11:20:25 | 32.649 | -87.933 | 5.0 | 4.3 | Alabama | usp000d7vw | 20041107112025 Mechanism | |
| 2004/11/16 | 18:21:28 | 42.062 | -120.279 | 10.4 | 3.5 | Oregon | uw10639023 | 20041116182128 Mechanism | |
| 2004/11/21 | 15:50:32 | 44.412 | -114.080 | 5.0 | 3.9 | Idaho | usp000d8x3 | 20041121155032 Mechanism | |