Tinicum Township, Delaware County, Pennsylvania
|Elevation||13 ft (4 m)|
|Area||8.7 sq mi (22.5 km2)|
|- land||5.7 sq mi (15 km2)|
|- water||3.0 sq mi (8 km2), 34.48%|
|Density||758.5 / sq mi (292.9 / km2)|
|- summer (DST)||EDT (UTC-4)|
|Designated||October 13, 1947|
Tinicum Township, more popularly known as "Tinicum Island" or "The Island", is a census-designated place and township in Delaware County, Pennsylvania, United States. The population was 4,353 at the 2000 census. Included within the township 's boundaries are the communities of Essington and Lester. One of the island's notable aspects is the John Heinz National Wildlife Refuge at Tinicum, attracting visitors to the island year-round. The international terminal, the western end of the airfield, and runways 9L/27R and 9R/27L of Philadelphia International Airport is located in Tinicum Township.
Tinicum Township has the distinction of being the site of the first recorded European settlement in Pennsylvania. Fort Nya Gothenborg, located on the South River, was settled by colonial Swedes in 1643. It served as capital of the New Sweden Colony, under the rule of Royal Governor Johan Björnsson Printz. Governor Printz built his manor house, The Printzhof, on Tinicum Island from which he administered the colony. The original Lenape called the place Tin-eek Unk. The township is the site of the Philadelphia Lazaretto It and The Printzhof are listed on the National Register of Historic Places.
Tinicum Township is located at  According to the United States Census Bureau, the township has a total area of 8.7 square miles (22.6 km²), of which, 5.7 square miles (14.9 km²) of it is land and 3.0 square miles (7.7 km²) of it (34.10%) is water.(39.868962, -75.288273).
As of the census of 2000, there were 4,353 people, 1,749 households, and 1,136 families residing in the township. The population density was 758.5 people per square mile (292.8/km²). There were 1,876 housing units at an average density of 326.9/sq mi (126.2/km²). The racial makeup of the township was 89.08% White, 4.80% Black or African American, 0.07% Native American, 0.44% Asian, 0.32% from other races, and 0.29% from two or more races. Hispanic or Latino of any race were 5.26% of the population.
There were 1,749 households out of which 27.4% had children under the age of 18 living with them, 45.5% were married couples living together, 13.8% had a female householder with no husband present, and 35.0% were non-families. 28.8% of all households were made up of individuals and 11.0% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.07.
In the township the population was spread out with 23.3% under the age of 18, 7.2% from 18 to 24, 31.5% from 25 to 44, 22.6% from 45 to 64, and 15.4% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 99.7 males. For every 100 females age 18 and over, there were 97.8 males.
The median income for a household in the township was $42,910, and the median income for a family was $49,129. Males had a median income of $37,358 versus $27,134 for females. The per capita income for the township was $19,203. About 6.8% of families and 7.6% of the population were below the poverty line, including 10.5% of those under age 18 and 2.7% of those age 65 or over.
Tinicum Township is part of the Interboro School District. It is the district's only township, the remaining municipalities having borough status. Tinicum School and Interboro High School serve the township. All-State Career School has two campuses in the Tinicum Township, in Lester and Essington.
Employers who maintain worksites in PA or employ individuals who may work from their homes are required to withhold applicable Earned Income Tax (EIT) from those employees. This is a result of Act 32, which consolidated the tax collecting entities for the state of Pennsylvania.  The current Earned Income tax rate for Tinicum Township workers is 1.0%.  This tax must be withheld from employee pay and paid to the representative of the local tax collector, Keystone Collections Group. 
Birth of the stromboli
The stromboli is reported by Peter Romano to have originated in 1950 in Tinicum Township at Romano's Italian Restaurant & Pizzeria, by his grandfather Nazzareno Romano. There, William Schofield supposedly gave it the name, after the movie Stromboli, starring Ingrid Bergman. Other claim says that the stromboli was the brainchild of Mike Aquino, Sr. and that he created it in Spokane, Washington in 1954.
- "PHMC Historical Markers Search" (Searchable database). Pennsylvania Historical and Museum Commission. Commonwealth of Pennsylvania. Retrieved 2015-02-11.
- History of Delaware County, Pennsylvania (Henry Graham Ashmead. Philadelphia: L. H. Everts & Co. 1884) 
- Tinicum history
- "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- Kostelni, Natalie. "Old Scott Paper HQ for sale." Philadelphia Business Journal. September 16, 2002. 1. Retrieved on September 6, 2012.
- All-State Career School locations
- "Act 32 for Employees/Self-Employed"
- "Act 32 Overview"
- "Municipal Statistics Tax Report." Retrieved Feb. 11, 2015.
- "Business-Keystone Collections."
- "Romano's Pizzaria Facebook page"
- Daley, Bill (March 26, 2013). "Calzone v. stromboli". Chicago Tribune. Retrieved 2013-03-29.
- Stimson, William (June 5, 1976). "Stromboli Sandwich is Spokane Original". Spokane Daily Chronicle. Retrieved 2014-08-13.
|Wikimedia Commons has media related to Tinicum Township, Delaware County, Pennsylvania.|
- Tinicum Township - Official website
West Deptford Township, New Jersey