ULEABORG, a seaport-town of Russian Finland, capital of a laen or province of the same name, stands on a peninsula at the mouth of the Ulea, in the Gulf of Bothnia, 70 miles S.S.E. of Tornea. Since its destruction by fire in 1822, it has been rebuilt in a regular plan, and has wide and straight streets. After Abo it is the principal commercial town of Finland, and exports pitch, tar, fish, and salted provisions. Fishing and shipbuilding are also carried on. Uleaborg was founded in 1610, and belonged to the Swedes till 1809. In June 1854, the shipping and magazines were destroyed by the English. Pop. (1857) 6451. The laen of Uleaborg has an area of 63,415 square miles, and a population of (in 1857) 169,845.