The data relating to real estate for sale on this web site comes in part from the IDX Program of the West Penn MLS. IDX information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Copyright 2026 West Penn Multi-List™. All rights reserved.
New Castle is located in Pennsylvania. New Castle, Pennsylvania 16101has a population of 21,992. New Castle 16101 is more family-centric than the surrounding county with 24.4% of the households containing married families with children. The county average for households married with children is 23.97%.
The median household income in New Castle, Pennsylvania 16101 is $36,595. The median household income for the surrounding county is $53,106 compared to the national median of $69,021. The median age of people living in New Castle 16101 is 39.1 years.
The average high temperature in July is 82.8 degrees, with an average low temperature in January of 17.9 degrees. The average rainfall is approximately 41.4 inches per year, with 35.4 inches of snow per year.
