Areas of high population density have defined characteristics. According to Nielsen Media Research, “A” counties belong to the 21 largest metropolitan areas based on household counts from census data. “B” counties are also metropolitan areas, not included in the “A” county list, with more than 85,000 households. The consumer behavior in metro or A and B counties is therefore unique to that of rural or C and D counties. Media vehicles reflect these distinctions in format and content, and tend to thrive in metro areas. Advertisers can take advantage of these population characteristics by advertising to defined A and B areas. Roll-out potential to metro markets is very strong.