Cohorts in Marketing. Similar to demographics, cohorts use quantifiable descriptors to identify target markets. Demographics, however, are the quantifiable descriptors themselves, such as the aforementioned age and household income.
The highest peaks are over 2,000 m (6,600 ft). Beijing Municipality consists of six city districts (previously eight, see Xuanwu and Chongwen), eight suburban districts and two rural counties. It covers a total area of 16,807.8 km2 (6,489.5 sq mi).
Beijing, also Peking, is the capital of the People's Republic of China and one of the most populous cities in the world. Its population in 2013 was 21,150,000. The city proper is the 3rd largest in the world.ince the early 1980s, the urban area of Beijing has expanded greatly with the completion of the 2nd Ring Road in 1981 and the subsequent addition of the 3rd, 4th, 5th and 6th Ring Roads. According to one 2005 newspaper report, the size of newly developed Beijing was one-and-a-half times larger than before.