Hillsborough ,.I. A S. county of New Hampshire, bordering on Massachusetts, intersected in its E. part by the Merrimack river, and drained in the W. by the Contoo-cook; area 960 sq. m.; pop. in 1870, 64,238. It has a gently diversified surface, but there are few hills of great elevation. The soil is fertile and well watered with running streams and small lakes. It is traversed by the Concord, the Contoocook River, the Peterborough and Shirley, the Monadnock, the Boston, Lowell, and Nashua, the Wilton branch, the Worcester and Nashua, the Manchester and Lawrence, and the Manchester and North Weare railroads. The chief productions in 1870 were 15,380 bushels of wheat, 163,801 of Indian corn, 74,710 of oats, 15,677 of barley, 349,692 of potatoes, 42,441 lbs. of wool, 718,696 of butter, 58,201 of cheese, and 08,089 tons of hay. There were 4,748 horses, 12,466 milch cows, 3,997 working oxen, 11,660 other cattle, 11,820 sheep, and 5,514 swine. There were 504 manufacturing establishments, with an aggregate capital of $13,443,890, and an annual product of $25,330,611, chiefly situated in Amherst, Manchester, and Nashua, the county towns. II. A W. county of Florida, bordering on the gulf of Mexico; area, 2,900 sq. m.; pop. in 1870, 3,210, of whom 546 were colored.

Its coast is deeply indented by Tampa bay, and it is drained by Hillsborough, Alafia, and Manatee rivers. Its surface is low, level, and in some places marshy, and is timbered with live oak and palmetto. The soil is very rich. The chief productions in 1870 were 33,-332 bushels of Indian corn, 27,663 of sweet potatoes, 35 hogsheads of sugar, 5,029 gallons of molasses, and 2,443 bales of cotton. There were 400 horses, 3,123 milch cows, 12,619 other cattle, and 3,079 swine. Capital, Tampa.