Knox County by density, based on the most recent figures, the 2000 U.S. census. The numbers indicate census districts; 25 is Sequoyah Hills; 33 is Holston Hills. District 1 is downtown, which has seen radical changes, residentially, and may actually rate among the highest-density neighborhoods by the time of the 2010 census. Map produced by Metro Pulse based on a population-density map provided by the Metropolitan Planning Commission. Voting precinct districts are drawn altogether differently from census districts, but in a comparison between this map and that of 2004 voting, the lowest-density parts of the county (in terms of people per acre) tend to be the most likely to vote Republican; the highest, to vote Democrat.