Macedonia to Mystic
(Click a column header to sort)
| City | Population |
| Macedonia | 325 |
| Macksburg | 142 |
| Madrid | 2,418 |
| Magnolia | 200 |
| Maharishi Vedic City | 85 |
| Malcom | 352 |
| Mallard | 298 |
| Maloy | 28 |
| Malvern | 1,256 |
| Manchester | 5,257 |
| Manilla | 839 |
| Manly | 1,342 |
| Manning | 1,490 |
| Manson | 1,893 |
| Mapleton | 1,322 |
| Maquoketa | 6,112 |
| Marathon | 302 |
| Marble Rock | 326 |
| Marcus | 1,139 |
| Marengo | 2,535 |
| Marion | 26,294 |
| Marne | 149 |
| Marquette | 476 |
| Marshalltown | 26,009 |
| Martelle | 280 |
| Martensdale | 467 |
| Martinsburg | 126 |
| Marysville | 54 |
| Mason City | 29,172 |
| Masonville | 129 |
| Massena | 414 |
| Matlock | 83 |
| Maurice | 254 |
| Maxwell | 807 |
| Maynard | 500 |
| Maysville | 163 |
| McCallsburg | 318 |
| McCausland | 299 |
| McClelland | 129 |
| McGregor | 871 |
| McIntire | 173 |
| Mechanicsville | 1,173 |
| Mediapolis | 1,644 |
| Melbourne | 794 |
| Melcher-Dallas | 1,298 |
| Melrose | 130 |
| Melvin | 243 |
| Menlo | 365 |
| Meriden | 184 |
| Merrill | 754 |
| Meservey | 252 |
| Middletown | 535 |
| Miles | 462 |
| Milford | 2,474 |
| Millersburg | 184 |
| Millerton | 48 |
| Millville | 23 |
| Milo | 839 |
| Milton | 550 |
| Minburn | 391 |
| Minden | 564 |
| Mingo | 269 |
| Missouri Valley | 2,992 |
| Mitchell | 155 |
| Mitchellville | 2,032 |
| Modale | 303 |
| Mondamin | 423 |
| Monmouth | 180 |
| Monona | 1,550 |
| Monroe | 1,808 |
| Montezuma | 1,457 |
| Monticello | 3,607 |
| Montour | 285 |
| Montrose | 957 |
| Moorhead | 232 |
| Moorland | 197 |
| Moravia | 713 |
| Morley | 88 |
| Morning Sun | 872 |
| Morrison | 97 |
| Moulton | 658 |
| Mount Auburn | 160 |
| Mount Ayr | 1,822 |
| Mount Pleasant | 8,751 |
| Mount Sterling | 40 |
| Mount Union | 132 |
| Mount Vernon | 4,171 |
| Moville | 1,583 |
| Murray | 766 |
| Muscatine | 22,697 |
| Mystic | 588 |
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