The ZIP Code maps and database are updated 4 times per year. Database updated: April 1, 2022, Maps updated: May 5, 2022.
Washington, DC 20390 Data & Demographics (As of July 1, 2021)
ZIP Code 20390 is a unique - single entity ZIP Code. There is no demographic data available for this type of ZIP Code.
However, ZIP Code 20390 is contained within ZIP Code 20003 and perhaps demographic information for this ZIP Code would be of interest to you: ZIP Code 20003 Demographic Information.