| Company | Category | Area | Address | Web | E-mail | Contact person |
| OLDHAM RAMONA HIGH SCHOOL | Schools | South Dakota | 220 W 2ND ST, RAMONA, Lake, South Dakota, 57054-2002, USA |
www.oldhamramona.k12.sd.us |
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Allan Crane |
| OLDHAM SERVICE INC | General Auto Repair | South Dakota | PO BOX M, OLDHAM, Kingsbury, South Dakota, 57051-0025, USA |
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| OLDHAM SERVICES INC | Service Station & Ret Hardware | South Dakota | PO BOX M, OLDHAM, Kingsbury, South Dakota, 57051-0025, USA |
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James Eykamp |
| OLDHAM-RAMONA ELEMENTARY | Element, Secon Schl | South Dakota | PO BOX 8, RAMONA, Lake, South Dakota, 57054-0008, USA |
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| OLDHAM-RAMONA ELEMENTARY SCHL | Elementary/secondary School | South Dakota | PO BOX 8, RAMONA, Lake, South Dakota, 57054-0008, USA |
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Diane Spilde |
| OLDHAM-RAMONA SCHOOL DIST 39-5 | Elementary/secondary School | South Dakota | PO BOX 8, RAMONA, Lake, South Dakota, 57054-0008, USA |
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Allan Crane |
| OLDHAM-ST JOHN LUTHERAN CHURCH | Lutheran Church | South Dakota | 44456 215TH ST, OLDHAM, Kingsbury, South Dakota, 57051-7220, USA |
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BECKY SENNER |
| OLDHAM-ST JOHN LUTHERAN PARISH | Churches | South Dakota | 44456 215TH ST, OLDHAM, Kingsbury, South Dakota, 57051-7220, USA |
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Conrad O Krahling |
