The Dalark post office was created on 08 Oct 1887, it was discontinued on 31 August 1957. Dalark was named for it's location on the Dallas & Clark County line.
Dalark is located 16 miles South of Arkadelphia, Clark County, off of Highway #8. The Township of Dalark received it's name because it is located on the borders of Dallas and Clark Counties.
According to Goodspeed's 1891 County History, "Dalark, on the Dallas and Clark County lines and so named, is the child of the Ultima Thule, Arkadelphia & Mississippi Railway, which was begun in 1886, with a view to passing through Princeton and Fordyce, but has extended only five miles into the county from the west. It has sprung up about the Arkadelphia Lumber Company's plant, and is really a mill town, with several stores."
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