| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| MacGregor historical | city | Idaho | United States | 44.69194 | -116.07889 | 4849 | 154 |
| Mace | city | Idaho | United States | 47.51833 | -115.82111 | 4875 | 132 |
| Mackay | city | Idaho | United States | 43.91472 | -113.6125 | 5935 | 56 |
| Mackay Bar | city | Idaho | United States | 45.37611 | -115.50528 | 2870 | 21 |
| Macks Inn Post Office | city | Idaho | United States | 44.49917 | -111.33694 | 6400 | 19 |
| Macon | city | Idaho | United States | 43.32667 | -114.54417 | 5019 | 37 |
| Maddens | city | Idaho | United States | 43.66194 | -116.59694 | 2427 | 16976 |
| Magic | city | Idaho | United States | 43.25528 | -114.38583 | 4849 | 60 |
| Magic City | city | Idaho | United States | 43.29056 | -114.36472 | 5036 | 85 |
| Magic Resort | city | Idaho | United States | 43.2825 | -114.38889 | 4849 | 60 |
| Malad City | city | Idaho | United States | 42.19167 | -112.25 | 4576 | 140 |
| Malta | city | Idaho | United States | 42.30639 | -113.36833 | 4507 | 70 |
| Manson | city | Idaho | United States | 42.56972 | -111.49806 | 5866 | 190 |
| Mapleton | city | Idaho | United States | 42.08389 | -111.74806 | 4973 | 1034 |
| Marble Creek | city | Idaho | United States | 47.25278 | -116.03083 | 3113 | 33 |
| Marion | city | Idaho | United States | 42.28667 | -113.91028 | 4501 | 112 |
| Mark | city | Idaho | United States | 43.77528 | -111.83111 | 4855 | 11151 |
| Marley | city | Idaho | United States | 43.01556 | -114.23028 | 4215 | 131 |
| Marsh Valley | city | Idaho | United States | 42.51778 | -112.155 | 4868 | 322 |
| Marsh historical | city | Idaho | United States | 43.91861 | -116.33889 | 2913 | 327 |
| Marsing | city | Idaho | United States | 43.54556 | -116.81222 | 2312 | 2010 |
| Martin | city | Idaho | United States | 43.51889 | -113.56639 | 5665 | 57 |
| Marysville | city | Idaho | United States | 44.07139 | -111.41944 | 5347 | 427 |
| Mashburn | city | Idaho | United States | 47.17917 | -116.495 | 2788 | 523 |
| Masonia historical | city | Idaho | United States | 47.45167 | -116.17972 | 3008 | 1212 |
| May | city | Idaho | United States | 44.60444 | -113.91111 | 5141 | 48 |
| May Place | city | Idaho | United States | 42.20111 | -114.88972 | 5298 | 28 |
| Mayfield | city | Idaho | United States | 43.41806 | -115.90056 | 3599 | 518 |
| Mc Arthur | city | Idaho | United States | 48.52361 | -116.4325 | 2401 | 466 |
| McCall | city | Idaho | United States | 44.91111 | -116.09778 | 5003 | 265 |
| McCammon | city | Idaho | United States | 42.65056 | -112.19222 | 4773 | 322 |
| McCarthy | city | Idaho | United States | 47.49306 | -115.90889 | 3251 | 1272 |
| McCrea Place | city | Idaho | United States | 45.30389 | -116.47639 | 4950 | 55 |
| McDonalds | city | Idaho | United States | 47.03444 | -115.15139 | 5164 | 41 |
| McDonaldville | city | Idaho | United States | 43.26 | -112.37417 | 4524 | 4244 |
| McGuire | city | Idaho | United States | 47.7125 | -116.99028 | 2178 | 7755 |
| McHenry | city | Idaho | United States | 42.59556 | -114.05139 | 4097 | 378 |
| McMillan | city | Idaho | United States | 42.54333 | -114.42056 | 3802 | 27645 |
| Meadow Creek | city | Idaho | United States | 48.82 | -116.15583 | 2503 | 480 |
| Meadowhurst | city | Idaho | United States | 47.32222 | -116.56028 | 2165 | 465 |
| Meadows | city | Idaho | United States | 44.96111 | -116.24278 | 4019 | 140 |
| Meadowville | city | Idaho | United States | 42.76361 | -111.60306 | 6099 | 112 |
| Medimont | city | Idaho | United States | 47.47611 | -116.60333 | 2198 | 252 |
| Melba | city | Idaho | United States | 43.37556 | -116.52806 | 2664 | 1074 |
| Melrose | city | Idaho | United States | 46.40833 | -116.45361 | 3198 | 388 |
| Menan | city | Idaho | United States | 43.72083 | -111.98917 | 4799 | 3565 |
| Meridian | city | Idaho | United States | 43.61222 | -116.39056 | 2624 | 17203 |
| Mesa | city | Idaho | United States | 44.62889 | -116.44972 | 3198 | 112 |
| Mexican Place | city | Idaho | United States | 45.81278 | -116.50556 | 4386 | 194 |
| Mica | city | Idaho | United States | 47.62056 | -116.87028 | 2552 | 1200 |
| Michaud | city | Idaho | United States | 42.89028 | -112.61361 | 4455 | 106 |
| Midasville | city | Idaho | United States | 45.56028 | -115.46917 | 5669 | 14 |
| Middleton | city | Idaho | United States | 43.70694 | -116.61917 | 2401 | 7057 |
| Midnight | city | Idaho | United States | 44.92306 | -115.32972 | 6430 | 33 |
| Midvale | city | Idaho | United States | 44.47139 | -116.73361 | 2598 | 75 |
| Midway | city | Idaho | United States | 43.62556 | -116.63139 | 2447 | 28606 |
| Midway | city | Idaho | United States | 43.70694 | -112.00417 | 4796 | 3622 |
| Miller Creek Settlement | city | Idaho | United States | 42.08167 | -116.12722 | 5577 | 19 |
| Milltown | city | Idaho | United States | 47.32417 | -116.54222 | 2614 | 465 |
| Milner | city | Idaho | United States | 42.51861 | -114.02194 | 4202 | 278 |
| Milo | city | Idaho | United States | 43.61083 | -111.88306 | 4878 | 4775 |
| Mineral | city | Idaho | United States | 44.56528 | -117.07667 | 3484 | 489 |
| Minidoka | city | Idaho | United States | 42.75389 | -113.48944 | 4281 | 181 |
| Mink Creek | city | Idaho | United States | 42.22833 | -111.715 | 5298 | 462 |
| Mitchell | city | Idaho | United States | 43.39722 | -112.11 | 4642 | 6037 |
| Mohler | city | Idaho | United States | 46.28972 | -116.34528 | 3313 | 252 |
| Monteview | city | Idaho | United States | 43.97194 | -112.53556 | 4799 | 187 |
| Montour | city | Idaho | United States | 43.925 | -116.32778 | 2598 | 299 |
| Montpelier | city | Idaho | United States | 42.32222 | -111.29694 | 5977 | 312 |
| Moody | city | Idaho | United States | 43.83694 | -111.63417 | 5180 | 1202 |
| Moore | city | Idaho | United States | 43.73583 | -113.36556 | 5475 | 56 |
| Moose City | city | Idaho | United States | 46.78694 | -115.1075 | 3999 | 61 |
| Mora | city | Idaho | United States | 43.45972 | -116.35222 | 2798 | 4501 |
| Moravia | city | Idaho | United States | 48.64833 | -116.37806 | 1998 | 218 |
| Moreland | city | Idaho | United States | 43.22278 | -112.44167 | 4494 | 2779 |
| Morgan | city | Idaho | United States | 43.06056 | -111.92667 | 5800 | 320 |
| Morgan Place | city | Idaho | United States | 43.10806 | -116.27389 | 2480 | 196 |
| Morrow | city | Idaho | United States | 46.12694 | -116.5225 | 4199 | 196 |
| Morton | city | Idaho | United States | 48.20139 | -116.69139 | 2526 | 762 |
| Moscow | city | Idaho | United States | 46.7325 | -116.99917 | 2598 | 10140 |
| Moss | city | Idaho | United States | 43.61583 | -116.61917 | 2460 | 32233 |
| Mound Valley | city | Idaho | United States | 42.35722 | -111.71167 | 5055 | 462 |
| Mount Idaho | city | Idaho | United States | 45.90389 | -116.08111 | 4124 | 383 |
| Mountain Home | city | Idaho | United States | 43.13306 | -115.69028 | 3152 | 742 |
| Mountain Home historical | city | Idaho | United States | 47.01917 | -116.92722 | 2762 | 369 |
| Mowry | city | Idaho | United States | 47.30944 | -116.995 | 2700 | 372 |
| Moyie Springs | city | Idaho | United States | 48.72639 | -116.1875 | 2198 | 406 |
| Mozart | city | Idaho | United States | 47.41111 | -116.93583 | 2700 | 411 |
| Mud Lake | city | Idaho | United States | 43.84139 | -112.47528 | 4793 | 187 |
| Mud Springs | city | Idaho | United States | 45.86361 | -115.58528 | 4999 | 14 |
| Mullan | city | Idaho | United States | 47.47028 | -115.80083 | 3599 | 261 |
| Murphy | city | Idaho | United States | 43.21833 | -116.55139 | 2893 | 20 |
| Murphy Hot Springs | city | Idaho | United States | 42.03028 | -115.36806 | 5200 | 15 |
| Murray | city | Idaho | United States | 47.62722 | -115.8575 | 3336 | 126 |
| Murtaugh | city | Idaho | United States | 42.4925 | -114.16139 | 4064 | 573 |
| Musselshell | city | Idaho | United States | 46.35722 | -115.74278 | 3287 | 39 |
| Myers | city | Idaho | United States | 42.60889 | -113.75389 | 4163 | 6271 |
| Myrtle | city | Idaho | United States | 46.49694 | -116.725 | 1332 | 407 |
|
|