Ashtabula County is a county located in the U.S. state of Ohio. As of the most recent data available, the county has a population of approximately 102,728 people, with a population density of about 146.13 persons per square mile.
The county spans a total land area of 703.00 square miles (1,821.00 square kilometers). The administrative center and county seat is Jefferson, which often serves as a hub for local governance and services. The largest city within the county by population is Ashtabula.
Geographically, Ashtabula County experiences varied elevations, with its highest point at Andover 1,085 ft and its lowest point at Geneva-on-the-Lake 605 ft. The region operates in the UTC-5.