The flag of Frederick County, Maryland, created by Marc DeOcampo in 2023.
Marc DeOcampo
2023
Own work based on: <a rel="nofollow" class="external free" href="https://www.frederickcountymd.gov/CivicAlerts.aspx?aid=5162">https://www.frederickcountymd.gov/CivicAlerts.aspx?aid=5162</a>