About Grantham, PA
Grantham is located in Pennsylvania. Grantham, Pennsylvania has a population of 2,241. Grantham is more family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 26%.
The median household income in Grantham, Pennsylvania is $72,917. The median household income for the surrounding county is $68,987 compared to the national median of $61,963. The median age of people living in Grantham is 21.6 years.
The average high temperature in July is 85.7 degrees, with an average low temperature in January of 23.1 degrees. The annual precipitation is 41.45.
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