Rockledge is the oldest city in Brevard County, Florida. The city's population was 27,678 at the 2020 Census, up from 24,926 at the 20…Rockledge is the oldest city in Brevard County, Florida. The city's population was 27,678 at the 2020 Census, up from 24,926 at the 2010 United States Census, and is part of the Palm Bay−Melbourne−Titusville Metropolitan Statistical Area.