page_title: Addison, Pennsylvania
section_title: Geography
hierarchical_section_title: Addison, Pennsylvania / Geography
caption_attribution_description: English: Map of Petersburg (later named Addison), Somerset County, Pennsylvania, taken from 1860 Edward L. Walker map of Somerset County available at the Library of Congress website
context_page_description: Addison is a borough in Somerset County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania, Metropolitan Statistical Area. The population was 214 at the 2000 census.
context_section_description: Addison is located at 39°44′43″N 79°19′59″W (39.7472, -79.3331),  about 30 miles (48 km) west-northwest of Cumberland, Maryland and about 30 miles (48 km) east-northeast of Morgantown, West Virginia. According to the United States Census Bureau, the borough has a total area of 0.6 square miles (1.6 km²), all land. It is surrounded by Addison Township.
  Addison was served by the National Road (now US 40).  The Petersburg Tollhouse, one of several toll houses on that road, is now listed on the National Register of Historic Places.
caption: Petersburg, Somerset County, PA, 1860 (note orientation of map: east at top)
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