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US Cities
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South Dakota
>
O
South Dakota Cities that begin with O
15 cities
City
County
2025 Pop.
↓
Oglala
Oglala Lakota County
1,478
Onida
Sully County
654
Oahe Acres
Hughes County
494
Oacoma
Lyman County
392
Oelrichs
Fall River County
131
Oldham
Kingsbury County
117
Okreek
Todd County
70
Olivet
Hutchinson County
63
Oral
Fall River County
55
Okaton
Jones County
54
Orient
Hand County
52
Old Elm Spring Colony
Douglas County
49
Orland Colony
McCook County
49
Ortley
Roberts County
47
Onaka
Faulk County
15
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Sources
US Census: 2024 South Dakota Place Gazetteer Files
City and Town Population Totals: 2020-2023
Recommended Reading
Cities in South Dakota
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