| Name | Status | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|
| Harper | County | 4,063 | 3,558 | 3,685 | o |
| Oklahoma | Federal State | 3,145,576 | 3,450,451 | 3,751,351 |
| Name | Status | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | |
|---|---|---|---|---|---|
| Buffalo | Town | 1,326 | 1,200 | 1,299 | o |
| Laverne | Town | 1,289 | 1,112 | 1,344 | o |
| May | Town | 42 | 33 | 39 | o |
| Rosston | Town | 54 | 66 | 31 | o |
Source: US Census Bureau (web).
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