Johnstown is a city in Cambria County, Pennsylvania, United States, 60 miles east of Pittsburgh and 46 miles west-south west of Altoona, Pennsylvania. The population was 27,906 at the 2000 census. It is the principal city of the Johnstown, Pennsylvania Metropolitan Statistical Area, which encompasses all of Cambria County The Metropolitan Statistical Area has a population of over 152,593. Johnstown apartments for rent comparison page shows most up to date rent information on Johnstown apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.