| Zip Code : | 72830 |
| City : | Clarksville city, Lamar city |
| County : | Johnson County |
| State : | Arkansas (AR) |
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| Land Area : | 131.25 sq mi |
| Water Area : | 5.80 sq mi |
| Latitude : | 35.5091674 |
| Longitude : | -93.5156189 |
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| Population (2010): | 14,896 |
| Population Estimate (2012) : | 15,308 |
| Population Density : | 113.49/sq mi |
| Housing Units (2012) : | 6,217 |
| Median Household Income (2012) : | $33,104 (Arkansas : $40,531, USA : $53,046) |
| Median Family Income (2012) : | $41,531 (Arkansas : $50,453, USA : $64,585) |
| Median House Price (2012) : | $91,200 (Arkansas : $106,300, USA : $181,400) |