Frederick County is located in the northern section of Maryland. The area of Frederick County is about 667 square miles. The county was established in 1748; it is populated today by 280 thousand residents. Frederick is the county seat of Frederick County. This map shows the borders of Frederick County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of Frederick County.
The borders of Frederick County over the map of Maryland
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