Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Augustine Cemetery | Cemetery | 418 | Carroll | 42 00 24 N | 094 58 29 W |
| Saint Augustine School | School | 413 | Carroll | 42 00 22 N | 094 58 23 W |
| Saint Augustine School | School | 292 | Polk | 41 35 00 N | 093 40 36 W |
| Saint Augustine's Church | Church | 415 | Carroll | 42 00 21 N | 094 58 30 W |
| Saint Augustine's School | School | 414 | Carroll | 42 00 21 N | 094 58 26 W |
| Saint Barnabas Cemetery | Cemetery | 159 | Lee | 40 31 55 N | 091 25 07 W |
| Saint Barnabas Episcopal Church | Church | 159 | Lee | 40 31 55 N | 091 25 07 W |
| Saint Benedict | Populated Place | 384 | Kossuth | 43 02 17 N | 094 03 52 W |
| Saint Benedict (historical) | Locale | 386 | Kossuth | 43 02 36 N | 094 03 51 W |
| Saint Benedict Catholic Cemetery | Cemetery | 372 | Kossuth | 43 02 19 N | 094 03 13 W |
| Saint Benedict Cemetery | Cemetery | 330 | Winneshiek | 43 17 01 N | 091 46 56 W |
| Saint Benedict Post Office (historical) | Post Office | 384 | Kossuth | 43 02 17 N | 094 03 52 W |
| Saint Benedict School | School | 289 | Winneshiek | 43 17 50 N | 091 46 56 W |
| Saint Benedict Wildlife Area | Park | 360 | Kossuth | 43 01 02 N | 094 05 01 W |
| Saint Benedicts Catholic Church | Church | 272 | Winneshiek | 43 18 11 N | 091 47 19 W |
| Saint Benedicts Church | Church | 384 | Kossuth | 43 02 18 N | 094 03 56 W |
| Saint Bernadette Catholic Church | Church | 231 | Cedar | 41 40 32 N | 091 20 23 W |
| Saint Bernard Catholic Church | Church | 342 | Clarke | 41 01 50 N | 093 45 34 W |
| Saint Bernard Grade School | School | 423 | Carroll | 42 10 60 N | 094 58 44 W |
| Saint Bernard High School | School | 419 | Carroll | 42 11 02 N | 094 58 39 W |
| Saint Bernard's Church | Church | 421 | Carroll | 42 11 00 N | 094 58 39 W |
| Saint Bernards Cemetery | Cemetery | 421 | Carroll | 42 10 43 N | 094 58 25 W |
| Saint Bernards Cemetery | Cemetery | 251 | Iowa | 41 35 40 N | 092 09 09 W |
| Saint Bernards Church | Church | 352 | Chickasaw | 43 11 55 N | 092 24 60 W |
| Saint Boniface Catholic Cemetery | Cemetery | 312 | Dubuque | 42 28 45 N | 091 05 00 W |
| Saint Boniface Catholic Church | Church | 371 | Hancock | 43 05 58 N | 093 36 14 W |
| Saint Boniface Catholic Church | Church | 441 | Shelby | 41 43 15 N | 095 23 43 W |
| Saint Boniface Catholic Church | Church | 284 | Tama | 42 05 43 N | 092 40 25 W |
| Saint Boniface Cemetery | Cemetery | 351 | Chickasaw | 43 02 38 N | 092 27 19 W |
| Saint Boniface Cemetery | Cemetery | 224 | Clinton | 41 53 46 N | 090 11 04 W |
| Saint Boniface Cemetery | Cemetery | 398 | Crawford | 42 04 57 N | 095 35 41 W |
| Saint Boniface Cemetery | Cemetery | 317 | Dubuque | 42 33 05 N | 091 06 52 W |
| Saint Boniface Cemetery | Cemetery | 378 | Hancock | 43 06 20 N | 093 38 32 W |
| Saint Boniface Cemetery | Cemetery | 387 | Mills | 41 08 30 N | 095 44 51 W |
| Saint Boniface Cemetery | Cemetery | 440 | Shelby | 41 43 19 N | 095 23 41 W |
| Saint Boniface Church | Church | 180 | Clinton | 41 52 28 N | 090 10 51 W |
| Saint Boniface Church | Church | 314 | Dallas | 41 36 40 N | 093 52 21 W |
| Saint Boniface Church | Church | 346 | Woodbury | 42 30 02 N | 096 25 05 W |
| Saint Bonifaces Catholic Church | Church | 315 | Dubuque | 42 33 03 N | 091 06 53 W |
| Saint Bridget Church | Church | 263 | Johnson | 41 46 40 N | 091 22 28 W |
| Saint Bridget Church | Church | 349 | Winneshiek | 43 23 06 N | 091 53 59 W |
| Saint Bridget School | School | 348 | Winneshiek | 43 23 03 N | 091 53 56 W |
| Saint Bridgets Catholic Church | Church | 360 | Allamakee | 43 05 09 N | 091 34 13 W |
| Saint Bridgets Catholic Church | Church | 351 | Winneshiek | 43 23 07 N | 091 53 58 W |
| Saint Bridgets Cemetery | Cemetery | 261 | Johnson | 41 46 43 N | 091 22 30 W |
| Saint Bridgets Cemetery | Cemetery | 349 | Winneshiek | 43 23 05 N | 091 53 58 W |
| Saint Bridgets Church | Church | 259 | Iowa | 41 43 54 N | 092 17 27 W |
| Saint Bridgett Cemetery | Cemetery | 383 | Pottawattamie | 41 27 59 N | 095 49 45 W |
| Saint Brigid's Catholic Church | Church | 314 | Greene | 42 01 50 N | 094 13 54 W |
| Saint Casimirs Catholic Church | Church | 352 | Woodbury | 42 29 15 N | 096 22 34 W |
| Saint Catherine - Saint Mary Grade School | School | 411 | Plymouth | 42 48 46 N | 095 58 18 W |
| Saint Catherine Church | Church | 395 | Plymouth | 42 49 18 N | 096 03 21 W |
| Saint Catherine of Siena Church | Church | 242 | Polk | 41 34 40 N | 093 33 47 W |
| Saint Catherines Catholic Cemetery | Cemetery | 398 | Plymouth | 42 49 20 N | 096 03 22 W |
| Saint Catherines Catholic Church | Church | 201 | Dubuque | 42 30 22 N | 090 40 17 W |
| Saint Catherines Cemetery | Cemetery | 339 | Dubuque | 42 24 22 N | 090 35 32 W |
| Saint Catherines School | School | 395 | Plymouth | 42 49 18 N | 096 03 21 W |
| Saint Cecelia's Catholic Church | Church | 366 | Kossuth | 43 04 18 N | 094 13 41 W |
| Saint Cecilia Catholic Church | Church | 329 | Guthrie | 41 41 37 N | 094 21 53 W |
| Saint Cecilia Catholic Church | Church | 472 | O'Brien | 43 11 02 N | 095 39 06 W |
| Saint Cecilia Church | Church | 354 | Howard | 43 13 12 N | 092 30 52 W |
| Saint Cecilia Church | Church | 290 | Story | 42 02 59 N | 093 37 46 W |
| Saint Cecilia School | School | 278 | Story | 42 01 25 N | 093 37 23 W |
| Saint Cecilla Cemetery | Cemetery | 466 | O'Brien | 43 10 16 N | 095 39 10 W |
| Saint Charles | Populated Place | 324 | Madison | 41 17 18 N | 093 48 34 W |
| Saint Charles (historical) | Locale | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Charles Cemetery | Cemetery | 319 | Madison | 41 16 54 N | 093 49 19 W |
| Saint Charles Church | Church | 329 | Floyd | 43 03 26 N | 092 47 24 W |
| Saint Charles City Hall | Building | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Charles Elementary School | School | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Charles Medical Clinic | Hospital | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Charles Parish | Church | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Charles Post Office | Post Office | 323 | Madison | 41 17 18 N | 093 48 31 W |
| Saint Clair | Locale | 366 | Monona | 42 01 27 N | 095 43 46 W |
| Saint Clair Cemetery | Cemetery | 339 | Montgomery | 41 03 36 N | 095 12 17 W |
| Saint Clair Gravel Cemetery | Cemetery | 281 | Butler | 42 34 40 N | 092 42 11 W |
| Saint Clair Post Office (historical) | Post Office | 364 | Monona | 42 01 28 N | 095 43 49 W |
| Saint Clairce Cemetery | Cemetery | 373 | Monona | 42 03 33 N | 095 42 33 W |
| Saint Clare Catholic Church | Church | 313 | Page | 40 44 30 N | 095 02 03 W |
| Saint Clement Catholic Cemetery | Cemetery | 370 | Dubuque | 42 31 10 N | 090 57 44 W |
| Saint Clement Cemetery | Cemetery | 349 | Winneshiek | 43 11 15 N | 091 57 49 W |
| Saint Clements Church | Church | 349 | Winneshiek | 43 11 16 N | 091 57 50 W |
| Saint Columbanus Church | Cemetery | 334 | Pottawattamie | 41 20 35 N | 095 44 34 W |
| Saint Columbkill's Catholic Church | Church | 340 | Greene | 42 09 11 N | 094 28 36 W |
| Saint Columbkille Cemetery | Cemetery | 232 | Clinton | 41 56 03 N | 090 42 01 W |
| Saint Columbkille School | School | 253 | Dubuque | 42 29 11 N | 090 40 30 W |
| Saint Columbkille's Cemetery | Cemetery | 380 | Pocahontas | 42 38 48 N | 094 50 41 W |
| Saint Columbkilles Catholic Church | Church | 253 | Dubuque | 42 29 10 N | 090 40 31 W |
| Saint Demetrios' Greek Orthodox Church | Church | 262 | Black Hawk | 42 29 30 N | 092 20 39 W |
| Saint Donatus | Populated Place | 204 | Jackson | 42 21 39 N | 090 32 21 W |
| Saint Donatus Catholic Cemetery | Cemetery | 241 | Jackson | 42 21 52 N | 090 32 08 W |
| Saint Donatus Catholic Church | Church | 237 | Jackson | 42 21 50 N | 090 32 06 W |
| Saint Donatus Post Office | Post Office | 204 | Jackson | 42 21 39 N | 090 32 21 W |
| Saint Donatus Town Hall | Building | 204 | Jackson | 42 21 39 N | 090 32 21 W |
| Saint Edwards Church | Church | 282 | Black Hawk | 42 28 38 N | 092 21 22 W |
| Saint Edwards School | School | 282 | Black Hawk | 42 28 37 N | 092 21 19 W |
| Saint Elizabeth Ann Seton Church | Church | 260 | Linn | 42 02 27 N | 091 41 06 W |
| Saint Elizabeth School | School | 246 | Keokuk | 41 21 31 N | 092 03 09 W |
| Saint Elizabeth Seton Church | Church | 271 | Warren | 41 29 50 N | 093 29 59 W |
| Saint Elizabeths Cemetery | Cemetery | 245 | Keokuk | 41 21 33 N | 092 03 14 W |
| Saint Elizabeths Church | Church | 246 | Keokuk | 41 21 34 N | 092 03 09 W |
| Saint Elizabeths Hospital | Hospital | 209 | Scott | 41 32 38 N | 090 35 30 W |
| Saint Elizabith Seton Church | Church | 374 | Carroll | 42 03 35 N | 094 43 22 W |
| Saint Frances Xavier Church | Church | 361 | Wright | 42 50 57 N | 093 36 05 W |
| Saint Francis Assisi Cemetery | Cemetery | 356 | Dubuque | 42 38 10 N | 090 52 10 W |
| Saint Francis Catholic Church | Church | 304 | Butler | 42 45 06 N | 092 58 26 W |
| Saint Francis Catholic Church | Church | 375 | Calhoun | 42 23 46 N | 094 38 22 W |
| Saint Francis Catholic Church | Church | 299 | Dubuque | 42 36 13 N | 090 47 03 W |
| Saint Francis Catholic Church | Church | 323 | Fayette | 42 50 35 N | 091 48 38 W |
| Saint Francis Cemetery | Cemetery | 290 | Black Hawk | 42 32 27 N | 092 11 01 W |