UNION, county of Pennsylvania, bounded by Mifflin S. and S.W.; by Centre \V.; by White Deer Mountain separating it from Lycomiug N.; and by Susquehannah river separating it from Northumber land E. The greatest length of this county is by a line nearly from S. to N. parallel to the general course of the Susquehannah river, 31 miles; mean breadth 22, and area 682 square miles. Extending in Lat. from 40° 39' to 41° 05', and in Lon. from 0° 08' E. to 0° 22' W. from W.C.
The mountain chains which traverse this county are humble when compared with those of some ad jacent counties, and have but a slight inclination towards northeast and southwest, from extending cast and west. The general declivity, shown by the course of the creeks, which flow over it into Susquehannah river, is to the east. The principal of these creeks, advancing from south to north, are Western Mahantango, Middle Creek, Penn's Creek, Buffalo and White Deer creeks.
The soil in quality and distribution, partakes of the character of that of other mountainous coun ties of Pennsylvania, and much in Union is excel lent. In 1820, the population amounted to 18,619, and had increased to 20,749 in 1830, showing an augmentation of between 11 and 12 per cent. in the intermediate ten years.
In 1831, there were in this county post offices at New Berlin the seat of justice, and at Beavertown, Freeburg, Hartleton, Lewisburg, Mac Kees Half Falls, Middleburg, Mifflinburg, Mount Pleasant Mills, New Columbia, and Selin's Grove.
New Berlin, the scat of justice, stands on the north and left bank of Penn's Creek, by post road 168 miles almost due N. from W.C. and 60 a little W. of N. from Harrisburg. N. Lat. 40° 52'.