Frequently Asked Questions About ZIP Code 21139

FAQs and quick facts about ZIP Code 21139

1

What region of the U.S. is ZIP Code 21139 associated with?

The 21139 ZIP Code is primarily associated with Riderwood, MD in the United States.
2

What U.S. county is ZIP Code 21139 located in?

The 21139 ZIP Code is located in Baltimore County in the state of Maryland.
3

What type of ZIP Code is 21139?

The U.S. ZIP Code 21139 is a P.O. Box-only ZIP Code. P.O. Box-only ZIP Code are those used only for Post Office (P.O.) Boxes at a given USPS facility. Some ZIP Codes, e.g. 21139, are dedicated solely to delivery of mail to P.O. Boxes.
4

What are demographics for ZIP Code 21139?

A ZIP Code must be a standard U.S. ZIP Code to have demographics data available. Because ZIP Code 21139 is a P.O. Box-only ZIP Code, demographics data is not available.