Monaghan Township is a township in York County, Pennsylvania, United States. The population was 2,674 at the 2020 census.^[2]

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Monaghan Township, Pennsylvania
Township
Christ Lutheran Church
Location in York County and the state of Pennsylvania.
Country	United States
State	Pennsylvania
County	York
Settled	1735
Incorporated	1745
Government
• Type	Board of Supervisors
Area [1]
• Total	12.87 sq mi (33.33 km2)
• Land	12.86 sq mi (33.32 km2)
• Water	0.01 sq mi (0.01 km2)
Population  (2020)[2]
• Total	2,674
• Estimate  (2021)[2]	2,695
• Density	206.70/sq mi (79.81/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
Area code	717
FIPS code	42-133-50328
Website	Monaghan Township

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The township was named after the town and county of Monaghan in Ireland.^[4]

The Gilbert Bridge was added to the National Register of Historic Places in 1989.^[5]

According to the United States Census Bureau, the township has a total area of 12.9 square miles (33 km²), all land.

As of the census^[6] of 2000, there were 2,132 people, 807 households, and 638 families living in the township. The population density was 164.6 inhabitants per square mile (63.6/km²). There were 881 housing units at an average density of 68.0 per square mile (26.3/km²). The racial makeup of the township was 98.59% White, 0.38% African American, 0.09% Native American, 0.33% Asian, 0.19% from other races, and 0.42% from two or more races. Hispanic or Latino of any race were 1.08% of the population.

There were 807 households, out of which 33.0% had children under the age of 18 living with them, 72.2% were married couples living together, 4.7% had a female householder with no husband present, and 20.9% were non-families. 16.6% of all households were made up of individuals, and 4.6% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 2.98.

In the township the population was spread out, with 24.5% under the age of 18, 5.5% from 18 to 24, 29.7% from 25 to 44, 30.4% from 45 to 64, and 9.8% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 102.7 males. For every 100 females age 18 and over, there were 98.8 males.

The median income for a household in the township was $57,440, and the median income for a family was $63,098. Males had a median income of $41,574 versus $25,208 for females. The per capita income for the township was $25,317. About 0.9% of families and 1.6% of the population were below the poverty line, including 0.6% of those under age 18 and 4.2% of those age 65 or over.

• Gilbert Bridge
• House in Siddonsburg, Pennsylvania