| Official Name: | Addison, Pennsylvania |
| Settlement Type: | Borough |
| Pushpin Map: | Pennsylvania |
| Pushpin Label Position: | none |
| Pushpin Map Caption: | Location within Pennsylvania and location of Pennsylvania within USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Somerset County |
| Established Title: | Settled |
| Established Date: | 1798 |
| Established Title2: | Incorporated |
| Established Date2: | February 28, 1912 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 1.41 |
| Area Land Km2: | 1.41 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 0.54 |
| Area Land Sq Mi: | 0.54 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 166 |
| Population Density Km2: | 117.91 |
| Population Density Sq Mi: | 305.15 |
| Utc Offset: | -5 |
| Utc Offset Dst: | -4 |
| Coordinates: | 39.7453°N -79.3331°W |
| Blank Name: | FIPS code |
| Blank Info: | 42-00396 |
Addison is a borough in Somerset County, Pennsylvania, United States. It is part of the Johnstown, Pennsylvania, Metropolitan Statistical Area. The population was 165 at the 2020 census.[2]
Peter Augustine laid out the town of Petersburg, which later became Addison, in 1818.[3] Henry Stuller built the first house here in 1820, the same year in which John Brown built a tavern. A schoolhouse was constructed about 1832, and a foundry was begun by Thomas & Nathan Cooper in 1844.
Addison is located at (39.7472, -79.3331),[4] about 30miles west-northwest of Cumberland, Maryland and about 30miles east-northeast of Morgantown, West Virginia. According to the United States Census Bureau, the borough has a total area of 0.6sqmi, 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.
At the 2000 census there were 214 people, 87 households, and 54 families residing in the borough. The population density was 380.4sp=usNaNsp=us. There were 96 housing units at an average density of 170.6sp=usNaNsp=us. The racial makeup of the borough was 100.00% White.[5] Of the 87 households, 26.4% had children under the age of 18 living with them, 57.5% were married couples living together, 4.6% had a female householder with no husband present, and 36.8% were non-families. 34.5% of households were one person, and 20.7% were one person aged 65 or older. The average household size was 2.34 and the average family size was 3.04.
In the borough the population was spread out, with 19.2% under the age of 18, 11.7% from 18 to 24, 27.1% from 25 to 44, 21.5% from 45 to 64, and 20.6% 65 or older. The median age was 42 years. For every 100 females there were 96.3 males. For every 100 females age 18 and over, there were 90.1 males.
The median household income was $25,833 and the median family income was $34,250. Males had a median income of $28,750 versus $22,917 for females. The per capita income for the borough was $14,963. About 5.1% of families and 13.9% of the population were below the poverty line, including 6.1% of those under the age of eighteen and 25.4% of those sixty five or over.