Dauphin County is a county located in the U.S. state of Pennsylvania. As of the most recent data available, the county has a population of approximately 251,798 people, with a population density of about 479.62 persons per square mile.
The county spans a total land area of 525.00 square miles (1,360.00 square kilometers). The administrative center and county seat is Harrisburg, which often serves as a hub for local governance and services. The largest city within the county by population is Harrisburg.
Geographically, Dauphin County experiences varied elevations, with its highest point at Gratz 820 ft and its lowest point at Colonial Park 0 ft. The region operates in the UTC-5.