Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Sheldon Branch Church of Latter Day Saints | Church | 431 | O'Brien | 43 11 13 N | 095 51 11 W |
| Sheldon Chiropractic Clinic | Hospital | 435 | O'Brien | 43 10 52 N | 095 51 22 W |
| Sheldon Christian School | School | 439 | O'Brien | 43 10 45 N | 095 50 25 W |
| Sheldon City Hall | Building | 436 | O'Brien | 43 10 48 N | 095 51 11 W |
| Sheldon City Park | Park | 438 | O'Brien | 43 11 05 N | 095 51 01 W |
| Sheldon Country Club | Locale | 429 | O'Brien | 43 12 34 N | 095 49 20 W |
| Sheldon Family Practice Association | Hospital | 436 | O'Brien | 43 11 13 N | 095 50 47 W |
| Sheldon Fire Department | Building | 436 | O'Brien | 43 10 48 N | 095 51 11 W |
| Sheldon High School | School | 433 | O'Brien | 43 10 60 N | 095 50 06 W |
| Sheldon Middle School | School | 435 | O'Brien | 43 10 53 N | 095 51 00 W |
| Sheldon Municipal Airport | Airport | 432 | O'Brien | 43 12 30 N | 095 50 00 W |
| Sheldon Police Headquarters | Building | 436 | O'Brien | 43 10 48 N | 095 51 11 W |
| Sheldon Post Office | Post Office | 433 | O'Brien | 43 10 43 N | 095 51 20 W |
| Sheldon Prairie Museum | Building | 436 | O'Brien | 43 10 48 N | 095 51 16 W |
| Sheldon Public Library | Building | 435 | O'Brien | 43 10 47 N | 095 51 13 W |
| Siloam Lutheran Church | Church | 430 | O'Brien | 42 58 40 N | 095 41 06 W |
| Siouxland Farmers Co-op Elevator | Locale | 438 | O'Brien | 43 11 11 N | 095 50 36 W |
| Siouxland Farmers Co-op Elevator | Locale | 470 | O'Brien | 43 10 54 N | 095 39 31 W |
| South Branch Little Floyd River | Stream | | O'Brien | 43 09 56 N | 095 45 17 W |
| South O'Brien Community School | School | 425 | O'Brien | 42 58 39 N | 095 41 26 W |
| South O'Brien Junior High School | School | 464 | O'Brien | 43 05 19 N | 095 37 41 W |
| South O'Brien Middle School | School | 448 | O'Brien | 42 58 08 N | 095 30 04 W |
| Steuck Cemetery | Cemetery | 466 | O'Brien | 43 07 16 N | 095 32 42 W |
| Stofferan Creek | Stream | | O'Brien | 43 04 12 N | 095 50 00 W |
| Sunrise Park | Park | 427 | O'Brien | 43 11 20 N | 095 50 01 W |
| Sutherland | Populated Place | 435 | O'Brien | 42 58 27 N | 095 29 51 W |
| Sutherland (historical) | Locale | 435 | O'Brien | 42 58 30 N | 095 29 53 W |
| Sutherland Family Medicine Center | Hospital | 436 | O'Brien | 42 58 27 N | 095 29 54 W |
| Sutherland Farmers Co-op Elevator | Locale | 445 | O'Brien | 42 59 28 N | 095 29 45 W |
| Sutherland Methodist Church | Church | 440 | O'Brien | 42 58 27 N | 095 30 02 W |
| Sutherland Post Office | Post Office | 436 | O'Brien | 42 58 28 N | 095 29 53 W |
| Sweeney Chiropractic Clinic | Hospital | 444 | O'Brien | 43 11 07 N | 095 28 16 W |
| Sweeney Creek | Stream | | O'Brien | 43 10 09 N | 095 46 43 W |
| Terra International Incorporated Elevator | Locale | 446 | O'Brien | 43 10 42 N | 095 28 36 W |
| Thorman Park | Park | 434 | O'Brien | 43 10 22 N | 095 50 36 W |
| Tjossem Park | Park | 443 | O'Brien | 43 04 15 N | 095 37 01 W |
| Tjossem Park Campground | Locale | 443 | O'Brien | 43 04 15 N | 095 37 01 W |
| Top Line Feed and Supply Incorporated Elevator | Locale | 434 | O'Brien | 42 57 12 N | 095 46 51 W |
| Township of Baker | Civil | 430 | O'Brien | 43 02 44 N | 095 48 16 W |
| Township of Caledonia | Civil | 431 | O'Brien | 42 57 06 N | 095 47 36 W |
| Township of Carroll | Civil | 427 | O'Brien | 43 07 37 N | 095 48 19 W |
| Township of Center | Civil | 467 | O'Brien | 43 07 38 N | 095 33 37 W |
| Township of Dale | Civil | 425 | O'Brien | 43 02 36 N | 095 41 30 W |
| Township of Floyd | Civil | 431 | O'Brien | 43 13 16 N | 095 48 31 W |
| Township of Franklin | Civil | 462 | O'Brien | 43 12 54 N | 095 40 59 W |
| Township of Grant | Civil | 433 | O'Brien | 43 02 32 N | 095 26 26 W |
| Township of Hartley | Civil | 440 | O'Brien | 43 12 47 N | 095 26 18 W |
| Township of Highland | Civil | 471 | O'Brien | 43 02 38 N | 095 33 17 W |
| Township of Liberty | Civil | 427 | O'Brien | 42 57 15 N | 095 33 51 W |
| Township of Lincoln | Civil | 466 | O'Brien | 43 12 55 N | 095 34 12 W |
| Township of Omega | Civil | 447 | O'Brien | 43 07 14 N | 095 26 14 W |
| Township of Summit | Civil | 443 | O'Brien | 43 07 40 N | 095 40 54 W |
| Township of Union | Civil | 410 | O'Brien | 42 57 29 N | 095 40 38 W |
| Township of Waterman | Civil | 397 | O'Brien | 42 57 23 N | 095 26 39 W |
| Trinity United Church of Christ | Church | 442 | O'Brien | 43 10 58 N | 095 28 15 W |
| United Church of Primghar | Church | 463 | O'Brien | 43 05 26 N | 095 37 17 W |
| United Methodist Church | Church | 435 | O'Brien | 43 10 52 N | 095 51 06 W |
| United Methodist Church | Church | 442 | O'Brien | 43 11 08 N | 095 28 03 W |
| United Methodist Church | Church | 449 | O'Brien | 43 11 08 N | 095 29 13 W |
| United Methodist Church | Church | 448 | O'Brien | 43 06 55 N | 095 44 45 W |
| Waterman | Populated Place | 398 | O'Brien | 42 57 21 N | 095 26 41 W |
| Waterman Cemetery | Cemetery | 436 | O'Brien | 42 57 59 N | 095 29 06 W |
| Waterman Creek | Stream | | O'Brien | 42 56 18 N | 095 25 05 W |
| Waterman Post Office (historical) | Post Office | 398 | O'Brien | 42 57 21 N | 095 26 41 W |
| Waterman Prairie Wildlife Management Area | Park | 376 | O'Brien | 42 57 30 N | 095 25 01 W |
| Waterman Wildlife Area | Park | 426 | O'Brien | 43 05 00 N | 095 27 31 W |
| Weale Area | Park | 427 | O'Brien | 43 00 05 N | 095 28 06 W |
| West Branch Mill Creek | Stream | | O'Brien | 43 04 55 N | 095 41 34 W |
| West Prairie View Cemetery | Cemetery | 422 | O'Brien | 42 58 08 N | 095 42 15 W |
| Whiskey Creek | Stream | | O'Brien | 42 54 41 N | 095 43 42 W |
| Whiskey Creek | Stream | | O'Brien | 42 55 52 N | 095 42 11 W |
| Wide View Rest Home | Hospital | 433 | O'Brien | 42 59 06 N | 095 41 32 W |
| Willow Creek | Stream | | O'Brien | 42 53 51 N | 095 38 24 W |
| Wolf Creek | Stream | | O'Brien | 43 11 45 N | 095 51 32 W |
| Wurth Chiropractic Clinic | Hospital | 440 | O'Brien | 42 58 16 N | 095 29 58 W |
| Zion Lutheran Church | Church | 426 | O'Brien | 42 58 26 N | 095 41 15 W |
| Zion Lutheran School | School | 426 | O'Brien | 42 58 26 N | 095 41 15 W |
| Zion United Church of Christ | Church | 438 | O'Brien | 42 56 47 N | 095 33 00 W |
| Allendorf | Locale | 487 | Osceola | 43 24 48 N | 095 38 39 W |
| Allendorf | Populated Place | 486 | Osceola | 43 24 53 N | 095 38 36 W |
| Allendorf Post Office (historical) | Post Office | 486 | Osceola | 43 24 53 N | 095 38 36 W |
| American Lutheran Church | Church | 482 | Osceola | 43 17 14 N | 095 36 31 W |
| Ashton | Locale | 442 | Osceola | 43 18 44 N | 095 47 17 W |
| Ashton | Populated Place | 444 | Osceola | 43 18 41 N | 095 47 28 W |
| Ashton Bible Church | Church | 444 | Osceola | 43 18 41 N | 095 47 28 W |
| Ashton Fire Department | Building | 444 | Osceola | 43 18 41 N | 095 47 28 W |
| Ashton Park | Park | 442 | Osceola | 43 18 42 N | 095 47 01 W |
| Ashton Pits State Public Hunting Area | Park | 442 | Osceola | 43 19 17 N | 095 46 30 W |
| Ashton Post Office | Post Office | 444 | Osceola | 43 18 41 N | 095 47 28 W |
| Ashton Public Library | Building | 444 | Osceola | 43 18 41 N | 095 47 28 W |
| Baker Township Cemetery | Cemetery | 461 | Osceola | 43 18 50 N | 095 33 51 W |
| Ben Franklin Elementary School | School | 469 | Osceola | 43 24 17 N | 095 44 28 W |
| Central Park | Park | 468 | Osceola | 43 24 12 N | 095 44 38 W |
| Chain Lake (historical) | Lake | 379 | Osceola | 42 22 29 N | 095 25 07 W |
| Christian Reformed Church | Church | 465 | Osceola | 43 24 31 N | 095 44 55 W |
| Christian Reformed Church | Church | 480 | Osceola | 43 24 58 N | 095 32 05 W |
| Cloverdale | Populated Place | 466 | Osceola | 43 20 49 N | 095 41 09 W |
| Cloverdale (historical) | Locale | 466 | Osceola | 43 20 45 N | 095 41 06 W |
| Cloverdale Post Office (historical) | Post Office | 466 | Osceola | 43 20 49 N | 095 41 09 W |
| Co-op Elevator Association - Sibley Elevator | Locale | 460 | Osceola | 43 23 49 N | 095 45 06 W |
| Cooperative Elevator | Locale | 480 | Osceola | 43 24 58 N | 095 32 05 W |
| Country View Manor Incorporated | Hospital | 468 | Osceola | 43 24 38 N | 095 44 42 W |
| Dagel Unit - Otter Creek Wildlife Management Area | Park | 451 | Osceola | 43 20 48 N | 095 44 26 W |
| Devils Ridge Wildlife Area | Park | 476 | Osceola | 43 26 30 N | 095 34 11 W |
| Dirks Wildlife Management Area | Park | 442 | Osceola | 43 21 15 N | 095 31 36 W |
| Dry Run | Stream | | Osceola | 43 20 19 N | 095 29 34 W |
| Ely-Bauermeister Wildlife Management Area | Park | 454 | Osceola | 43 25 00 N | 095 36 11 W |
| Fairgrounds Park | Park | 460 | Osceola | 43 24 02 N | 095 45 26 W |
| Fairview Cemetery | Cemetery | 476 | Osceola | 43 26 54 N | 095 29 11 W |
| Fairview Prairie Wildlife Management Area | Park | 473 | Osceola | 43 27 10 N | 095 25 36 W |