Pakistan has the sixth largest population in the world with 174 million people and an annual population growth rate of roughly 2% as of 2010, a sharp contrast to their post-independence population of 36 million. The UN projects that come 2050 Pakistan will have a population in upwards of 300 million. Although Pakistan's current population may be just over half of the US, their land mass is only about twice the size of California. Feeding, clothing, housing, and maintaining the quality of life for this dense population is one of Pakistan's greatest challenges. A particularly troublesome challenge has been the uneven distribution.
Pakistan's uneven distribution is exemplified by the high density cities of Karachi, Lahore, and Faisalabad to the east and the sparse plains of Baluchistan as seen below.