About 20678 - Prince Frederick, Maryland
20678 is a mid-sized ZIP code covering Prince Frederick in Maryland, the United States. This area falls under Prince Frederick County.
Census data puts the population of this ZIP code at 13,532 residents. It's a quieter, less populous area than the typical Maryland ZIP code (avg. ~23,118).
Median household income is about $86,800 (near the Maryland average).
This ZIP code sits alongside neighboring areas like Essex, White Marsh, Frederick within Maryland.