Marlin, or MarLin (pronounced mar-LIN) is a census-designated place (CDP) in Schuylkill County, Pennsylvania, United States. The population was 640 at the 2000 census. It is a village of Norwegian Township. The village is the seat of government for the township.

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MarLin, Pennsylvania
CDP
Post Office in MarLin.
MarLin, Pennsylvania Location within the U.S. state of Pennsylvania
Coordinates: 40°40′50″N 76°14′39″W
Country	United States
State	Pennsylvania
County	Schuylkill
Municipality	Norwegian Township
Government
Area [1]
• Total	0.13 sq mi (0.33 km2)
• Land	0.13 sq mi (0.33 km2)
• Water	0.00 sq mi (0.00 km2)
Population  (2020)[2]
• Total	299
• Density	2,335.94/sq mi (898.41/km2)
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP codes	17951
Area code	570
FIPS code	42-47600

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Marlin is located at 40°40′50″N 76°14′39″W (40.680503, -76.244204).^[3]

According to the United States Census Bureau, the CDP has a total area of 0.9 square miles (2.3 km²), all land.

At the 2000 census there were 640 people, 269 households, and 181 families living in the CDP. The population density was 710.5 inhabitants per square mile (274.3/km²). There were 278 housing units at an average density of 308.6 per square mile (119.2/km²). The racial makeup of the CDP was 99.38% White and 0.62% African American. Hispanic or Latino of any race were 0.47%.^[5]

Of the 269 households, 33.5% had children under the age of 18 living with them, 53.2% were married couples living together, 8.2% had a female householder with no husband present, and 32.7% were non-families. 30.5% of households were one person and 19.3% were one person aged 65 or older. The average household size was 2.38 and the average family size was 2.96.

The age distribution was 24.8% under the age of 18, 4.7% from 18 to 24, 28.0% from 25 to 44, 22.2% from 45 to 64, and 20.3% 65 or older. The median age was 40 years. For every 100 females, there were 99.4 males. For every 100 females age 18 and over, there were 83.6 males.^{[citation needed]}

The median household income was $42,692 and the median family income was $51,106. Males had a median income of $41,000 versus $22,083 for females. The per capita income for the CDP was $19,122. None of the families and 4.9% of the population were living below the poverty line, including no under eighteens and 14.6% of those over 64.

• Fire Co. and War Memorial.
• Spruce Street.
• Norwegian Twp. Municipal Bldg.