Sabula to Swisher
(Click a column header to sort)
| City | Population |
| Sabula | 670 |
| Sac City | 2,368 |
| Sageville | 203 |
| Salem | 464 |
| Salix | 370 |
| Sanborn | 1,353 |
| Sandyville | 61 |
| Scarville | 97 |
| Schaller | 779 |
| Schleswig | 833 |
| Scranton | 604 |
| Searsboro | 155 |
| Sergeant Bluff | 3,321 |
| Seymour | 810 |
| Shambaugh | 188 |
| Shannon City | 70 |
| Sharpsburg | 98 |
| Sheffield | 930 |
| Shelby | 696 |
| Sheldahl | 336 |
| Sheldon | 4,914 |
| Shell Rock | 1,298 |
| Shellsburg | 938 |
| Shenandoah | 5,546 |
| Sherrill | 186 |
| Shueyville | 250 |
| Sibley | 2,796 |
| Sidney | 1,300 |
| Sigourney | 2,209 |
| Silver City | 259 |
| Sioux Center | 6,327 |
| Sioux City | 85,013 |
| Sioux Rapids | 720 |
| Slater | 1,306 |
| Sloan | 1,032 |
| Smithland | 221 |
| Soldier | 207 |
| Solon | 1,177 |
| Somers | 165 |
| South English | 213 |
| Spencer | 11,317 |
| Spillville | 386 |
| Spirit Lake | 4,261 |
| Spragueville | 89 |
| Spring Hill | 92 |
| Springbrook | 182 |
| Springville | 1,091 |
| St Ansgar | 1,031 |
| St Anthony | 109 |
| St Charles | 619 |
| St Donatus | 140 |
| St Lucas | 178 |
| St Marys | 134 |
| St Olaf | 136 |
| St Paul | 118 |
| Stacyville | 469 |
| Stanhope | 488 |
| Stanley | 128 |
| Stanton | 714 |
| Stanwood | 680 |
| State Center | 1,349 |
| Steamboat Rock | 336 |
| Stockport | 284 |
| Stockton | 182 |
| Storm Lake | 10,076 |
| Story City | 3,228 |
| Stout | 217 |
| Stratford | 746 |
| Strawberry Point | 1,386 |
| Struble | 85 |
| Stuart | 1,712 |
| Sully | 904 |
| Sumner | 2,106 |
| Superior | 142 |
| Sutherland | 707 |
| Swaledale | 174 |
| Swan | 121 |
| Swea City | 642 |
| Swisher | 813 |
|
