Approximately 40.21° N latitude and -79.48° W longitude.
The town of Calumet itself covers roughly 2.2 square miles. Demographic Profile (as of 2023/2024 Estimates) 156214 zip
Adjacent areas include 15674, 15689, 15676, and 15666. Approximately 40
ZIP Code 15621: Profile and Demographic Overview The ZIP code is primarily associated with Calumet, Pennsylvania , a small community located in Westmoreland County . This rural-suburban area is part of the Eastern Time Zone and falls within the 724 area code. Geographic and Administrative Information Primary Location: Calumet, PA . County: Westmoreland County. PA . County: Westmoreland County.