| County : | Sebastian County |
| State : | Arkansas (AR) |
| Land Area : | 531.91 sq mi |
| Water Area : | 14.25 sq mi |
| Latitude : | 35.1969808 |
| Longitude : | -94.2749890 |
| Population (2010): | 125,744 |
| Population Estimate (2012) : | 125,795 |
| Population Density : | 236.40/sq mi |
| Housing Units (2012) : | 54,651 |
| Median Household Income (2012) : | $40,247 (Arkansas : $40,531, USA : $53,046) |
| Median Family Income (2012) : | $50,953 (Arkansas : $50,453, USA : $64,585) |
| Median House Price (2012) : | $113,100 (Arkansas : $106,300, USA : $181,400) |
Sebastian County Cities / Towns
| Barling City (4,649) | Bonanza City (575) | Central City Town (502) |
| Fort Smith City (86,209) | Greenwood City (8,952) | Hackett City (812) |
| Hartford City (642) | Huntington City (635) | Lavaca City (2,289) |
| Mansfield City (1,139) | Midland Town (325) |
Sebastian County Zip Codes
| 72901 (21,591) | 72903 (26,148) | 72904 (21,893) |
| 72908 (13,378) | 72916 (7,131) | 72923 (4,735) |
| 72927 (8,701) | 72933 (4,999) | 72936 (14,527) |
| 72937 (3,858) | 72938 (1,391) | 72940 (2,515) |
| 72941 (5,251) | 72944 (2,919) | 72945 (314) |