An old factory in Blawnox
|Official name: Borough of Blawnox|
|Named for: Blaw-Knox Steel Company|
|Elevation||843 ft (257 m)|
|Area||0.4 sq mi (1.04 km2)|
|- land||0.3 sq mi (0.78 km2)|
|- water||0.1 sq mi (0.26 km2)|
|Density||3,580 / sq mi (1,382.2 / km2)|
|Incorporated||April 13, 1925|
|- summer (DST)||EDT (UTC-4)|
|School District||Fox Chapel Area|
The name, Blawnox, is derived from the Blaw-Knox Company, which had a manufacturing plant there providing much of the town's employment. Blawnox had previously been called Hoboken, but postal regulations required that the municipality change its name since Hoboken, New Jersey had a prior claim to the name.
The town was originally founded in the late 18th century, with the name Hoboken. Steel was the community's major industry, with the area being home to the Blaw Steel Co. and the Knox Welded and Pressed Steel Co. When the Blaw Steel Co. acquired the Knox Welded and Pressed Steel Co. in 1917, the company became known as the Blaw-Knox Steel Construction Co., and the size of Hoboken was expanded to the whole area spanned by the Blaw-Knox mill.
When Hoboken was required to change its name due to Hoboken, New Jersey's prior claim to the name, the management of the Blaw-Knox Steel Construction Co. asked the people of the town to change the name to Blawnox, and they did.
Blawnox is located at .
According to the United States Census Bureau, the borough has a total area of 0.4 square miles (1.0 km2), of which 0.3 square miles (0.78 km2) is land and 0.1 square miles (0.26 km2), or 25.58%, is water. Its average elevation is 843 feet (257 m) above sea level.
As of the census of 2000, there were 1,550 people, 858 households, and 373 families residing in the borough. The population density was 4,771.6 people per square mile (1,870.2/km²). There were 931 housing units at an average density of 2,866.0 per square mile (1,123.3/km²). The racial makeup of the borough was 93.03% White, 1.03% African American, 0.06% Native American, 5.23% Asian, 0.19% from other races, and 0.45% from two or more races. Hispanic or Latino of any race were 0.65% of the population.
There were 858 households out of which 15.6% had children under the age of 18 living with them, 29.4% were married couples living together, 10.3% had a female householder with no husband present, and 56.5% were non-families. 51.3% of all households were made up of individuals and 19.1% had someone living alone who was 65 years of age or older. The average household size was 1.81 and the average family size was 2.68.
In the borough the population was spread out with 14.5% under the age of 18, 6.9% from 18 to 24, 31.7% from 25 to 44, 25.0% from 45 to 64, and 21.9% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 86.7 males. For every 100 females age 18 and over, there were 83.9 males.
The median income for a household in the borough was $30,203, and the median income for a family was $43,500. Males had a median income of $31,450 versus $26,406 for females. The per capita income for the borough was $19,858. About 5.8% of families and 8.7% of the population were below the poverty line, including 9.5% of those under age 18 and 5.6% of those age 65 or over.
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- "Borough History". Blawnox.com. Retrieved 2007-08-05.
- "Allegheny County - 2nd Class" (in English). Retrieved 2007-08-25.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "Number and Distribution of Inhabitants:Pennsylvania-Tennessee". Fifteenth Census. U.S. Census Bureau.
- "Number of Inhabitants: Pennsylvania". 18th Census of the United States. U.S. Census Bureau. Retrieved 22 November 2013.
- "Pennsylvania: Population and Housing Unit Counts". U.S. Census Bureau. Retrieved 22 November 2013.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Annual Estimates of the Resident Population". U.S. Census Bureau. Retrieved 22 November 2013.