Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Saint Francis Cemetery | Cemetery | 370 | Calhoun | 42 24 05 N | 094 36 45 W |
| Saint Francis Cemetery | Cemetery | 408 | Carroll | 42 05 49 N | 094 56 15 W |
| Saint Francis Cemetery | Cemetery | 289 | Delaware | 42 29 16 N | 091 08 06 W |
| Saint Francis Cemetery | Cemetery | 338 | Fayette | 42 51 04 N | 091 49 35 W |
| Saint Francis Cemetery | Cemetery | 363 | Wright | 42 49 47 N | 093 35 27 W |
| Saint Francis Church | Church | 290 | Black Hawk | 42 32 28 N | 092 10 56 W |
| Saint Francis Convent | Church | 251 | Dubuque | 42 32 02 N | 090 40 02 W |
| Saint Francis De Sales Church | Church | 385 | Winneshiek | 43 08 33 N | 091 45 26 W |
| Saint Francis DeSales Cemetery | Cemetery | 385 | Winneshiek | 43 08 31 N | 091 45 26 W |
| Saint Francis Hardin Medical Clinic | Hospital | 341 | Taylor | 40 39 56 N | 094 43 06 W |
| Saint Francis Hospital | Hospital | 264 | Black Hawk | 42 29 57 N | 092 18 27 W |
| Saint Francis Manor | Hospital | 310 | Poweshiek | 41 44 37 N | 092 42 26 W |
| Saint Francis Monastery | Church | 201 | Scott | 41 31 51 N | 090 30 45 W |
| Saint Francis Nursing Home | Hospital | 182 | Des Moines | 40 48 24 N | 091 06 21 W |
| Saint Francis of Assisi Church | Church | 300 | Dallas | 41 35 01 N | 093 48 11 W |
| Saint Francis School | School | 368 | Woodbury | 42 28 57 N | 096 22 36 W |
| Saint Francis Xavier Roman Catholic Basilica | Church | 286 | Dubuque | 42 29 04 N | 091 07 34 W |
| Saint Francis Xavier School | School | 285 | Dubuque | 42 29 01 N | 091 07 34 W |
| Saint Francisville Bridge | Bridge | 151 | Lee | 40 27 43 N | 091 34 01 W |
| Saint Fredericks Catholic Church | Church | 329 | Chickasaw | 42 57 54 N | 092 11 48 W |
| Saint Gabriel and All Angels Church | Church | 236 | Jefferson | 41 00 23 N | 091 57 35 W |
| Saint Gabriel's Catholic Church | Church | 318 | Story | 42 09 26 N | 093 17 51 W |
| Saint Gabriels Monastery (historical) | Church | 290 | Polk | 41 37 49 N | 093 41 56 W |
| Saint George Cemetery | Cemetery | 235 | Linn | 41 58 28 N | 091 38 50 W |
| Saint George Orthodox Church | Church | 228 | Linn | 41 59 43 N | 091 36 51 W |
| Saint Georges Episcopal Church | Church | 385 | Plymouth | 42 47 16 N | 096 09 52 W |
| Saint Henry's Catholic Church | Church | 287 | Marshall | 42 01 43 N | 092 54 59 W |
| Saint Irenaeus Catholic Church | Church | 193 | Clinton | 41 52 41 N | 090 10 39 W |
| Saint Irenaeus School | School | 192 | Clinton | 41 52 41 N | 090 10 37 W |
| Saint Isdore Cemetery | Cemetery | 263 | Linn | 42 03 18 N | 091 26 16 W |
| Saint Isidore Catholic Church | Church | 271 | Linn | 42 03 45 N | 091 26 51 W |
| Saint Jacobs Cemetery | Cemetery | 399 | Palo Alto | 43 15 17 N | 094 46 15 W |
| Saint James Catholic Church | Church | 220 | Clinton | 41 54 18 N | 090 51 51 W |
| Saint James Catholic Church | Church | 229 | Washington | 41 18 04 N | 091 41 53 W |
| Saint James Catholic Church | Church | 377 | Winnebago | 43 16 08 N | 093 38 51 W |
| Saint James Cemetery | Cemetery | 231 | Clinton | 41 54 05 N | 090 52 06 W |
| Saint James Cemetery | Cemetery | 218 | Lee | 40 46 08 N | 091 31 07 W |
| Saint James Cemetery | Cemetery | 318 | Story | 42 00 32 N | 093 18 37 W |
| Saint James Cemetery | Cemetery | 358 | Webster | 42 34 09 N | 094 21 53 W |
| Saint James Cemetery | Cemetery | 394 | Winnebago | 43 15 51 N | 093 39 07 W |
| Saint James church | Church | 369 | Plymouth | 42 47 31 N | 096 10 32 W |
| Saint James Church | Church | 201 | Scott | 41 31 52 N | 090 30 26 W |
| Saint James Episcopal Church | Church | 279 | Buchanan | 42 28 12 N | 091 53 35 W |
| Saint James Episcopal Church | Church | 257 | Mahaska | 41 17 38 N | 092 38 30 W |
| Saint James Lutheran Church | Church | 321 | Butler | 42 45 16 N | 092 47 42 W |
| Saint James Lutheran Church | Church | 333 | Cerro Gordo | 43 08 55 N | 093 10 37 W |
| Saint James Lutheran Church | Church | 277 | Iowa | 41 42 44 N | 092 17 49 W |
| Saint James Lutheran Church | Church | 253 | Polk | 41 39 38 N | 093 41 51 W |
| Saint James Lutheran Church State Preserve | Park | 329 | Winneshiek | 43 08 45 N | 091 56 29 W |
| Saint James Parish | Church | 217 | Lee | 40 46 09 N | 091 31 03 W |
| Saint James School | School | 229 | Washington | 41 18 02 N | 091 41 57 W |
| Saint James United Methodist Church | Church | 222 | Linn | 41 59 15 N | 091 40 58 W |
| Saint James United Methodist Church | Church | 388 | Woodbury | 42 28 09 N | 096 20 26 W |
| Saint Johannes Church | Church | 320 | Bremer | 42 49 45 N | 092 21 23 W |
| Saint John African Methodist Episcopal Church | Church | 191 | Des Moines | 40 48 32 N | 091 06 47 W |
| Saint John Auditorium | Building | 250 | Wapello | 41 02 42 N | 092 23 41 W |
| Saint John Catholic Cametery | Cemetery | 269 | Linn | 41 54 50 N | 091 22 51 W |
| Saint John Cemetery | Cemetery | 335 | Bremer | 42 52 08 N | 092 05 45 W |
| Saint John Cemetery | Cemetery | 369 | Calhoun | 42 28 29 N | 094 52 03 W |
| Saint John Cemetery | Cemetery | 403 | Crawford | 42 04 60 N | 095 35 40 W |
| Saint John Cemetery | Cemetery | 381 | Hancock | 43 06 20 N | 093 43 05 W |
| Saint John Cemetery | Cemetery | 212 | Lee | 40 47 28 N | 091 36 05 W |
| Saint John Cemetery | Cemetery | 438 | O'Brien | 42 57 24 N | 095 46 49 W |
| Saint John Cemetery | Cemetery | 435 | Sioux | 43 13 46 N | 096 00 56 W |
| Saint John Cemetery | Cemetery | 371 | Winneshiek | 43 25 16 N | 091 43 50 W |
| Saint John Church | Church | 309 | Bremer | 42 41 09 N | 092 18 05 W |
| Saint John Church | Church | 313 | Bremer | 42 44 40 N | 092 18 02 W |
| Saint John Church | Church | 452 | Buena Vista | 42 51 59 N | 095 22 03 W |
| Saint John Church | Church | 381 | Emmet | 43 18 03 N | 094 28 55 W |
| Saint John Church | Church | 312 | Marshall | 41 54 21 N | 092 58 50 W |
| Saint John Church | Church | 291 | Tama | 41 53 30 N | 092 37 43 W |
| Saint John Church | Church | 381 | Winneshiek | 43 25 20 N | 091 43 18 W |
| Saint John Church of the First Born | Church | 260 | Black Hawk | 42 30 59 N | 092 20 35 W |
| Saint John Episcopal Church | Church | 317 | Mills | 41 02 54 N | 095 44 30 W |
| Saint John Evangelical Lutheran Cemetery | Cemetery | 347 | Page | 40 51 05 N | 095 20 11 W |
| Saint John Evangelical Lutheran Church | Church | 388 | Carroll | 42 04 45 N | 094 51 01 W |
| Saint John Evangelical Lutheran Church | Church | 310 | Floyd | 43 03 51 N | 092 40 51 W |
| Saint John Evangelical Lutheran Church | Church | 232 | Jones | 41 59 53 N | 091 08 30 W |
| Saint John Lutheran Church | Church | 270 | Benton | 41 59 37 N | 091 58 04 W |
| Saint John Lutheran Church | Church | 276 | Black Hawk | 42 31 55 N | 092 27 23 W |
| Saint John Lutheran Church | Church | 278 | Bremer | 42 43 19 N | 092 28 30 W |
| Saint John Lutheran Church | Church | 323 | Bremer | 42 50 52 N | 092 05 37 W |
| Saint John Lutheran Church | Church | 437 | Buena Vista | 42 38 29 N | 095 12 05 W |
| Saint John Lutheran Church | Church | 288 | Butler | 42 47 09 N | 092 40 12 W |
| Saint John Lutheran Church | Church | 378 | Calhoun | 42 32 51 N | 094 42 52 W |
| Saint John Lutheran Church | Church | 305 | Chickasaw | 42 57 08 N | 092 32 39 W |
| Saint John Lutheran Church | Church | 280 | Clayton | 42 57 40 N | 091 22 04 W |
| Saint John Lutheran Church | Church | 344 | Fayette | 42 44 48 N | 091 40 33 W |
| Saint John Lutheran Church | Church | 328 | Franklin | 42 53 34 N | 093 13 03 W |
| Saint John Lutheran Church | Church | 367 | Harrison | 41 34 47 N | 095 34 12 W |
| Saint John Lutheran Church | Church | 349 | Harrison | 41 51 22 N | 095 35 50 W |
| Saint John Lutheran Church | Church | 421 | Lyon | 43 20 38 N | 096 00 08 W |
| Saint John Lutheran Church | Church | 250 | Mahaska | 41 16 00 N | 092 37 56 W |
| Saint John Lutheran Church | Church | 289 | Marion | 41 13 25 N | 093 14 31 W |
| Saint John Lutheran Church | Church | 339 | Mills | 41 08 34 N | 095 41 33 W |
| Saint John Lutheran Church | Church | 480 | Osceola | 43 24 58 N | 095 32 05 W |
| Saint John Lutheran Church | Church | 303 | Pottawattamie | 41 15 31 N | 095 51 14 W |
| Saint John Lutheran Church | Church | 392 | Woodbury | 42 31 11 N | 096 24 10 W |
| Saint John Nepomucene Catholic Church | Church | 319 | Winneshiek | 43 08 36 N | 091 55 58 W |
| Saint John Post Office (historical) | Post Office | 313 | Harrison | 41 31 40 N | 095 52 41 W |
| Saint John School | Locale | 349 | Dubuque | 42 37 54 N | 090 59 46 W |
| Saint John School | School | 426 | Buena Vista | 42 36 19 N | 095 22 28 W |
| Saint John School | School | 427 | Sioux | 43 14 38 N | 096 00 48 W |
| Saint John School of Religion | School | 352 | Chickasaw | 43 03 36 N | 092 19 41 W |
| Saint John the Baptist Catholic Cemetery | Cemetery | 335 | Dubuque | 42 28 14 N | 090 50 02 W |
| Saint John the Baptist Church | Church | 321 | Dubuque | 42 27 02 N | 090 51 01 W |
| Saint John the Baptist Orthodox Church | Church | 226 | Linn | 41 59 40 N | 091 36 51 W |
| Saint John the Baptist School | School | 357 | Kossuth | 43 17 25 N | 094 12 58 W |
| Saint John United Church of Christ | Church | 169 | Lee | 40 37 58 N | 091 18 56 W |
| Saint John United Church of Christ | Church | 318 | Marshall | 41 56 29 N | 093 06 12 W |