New York City. Los Angeles. Seattle. San Diego. San Jose. These are the top five U.S. cities with the largest homeless populations. In total, more than 150,000 people. By comparison, Pittsburgh has only 880 this year compared with 692 the year before. The surge is particularly noticeable in the Downtown area. (Photo Credit - Get Marty/Patrick O'Connor)

<p>New York City. Los Angeles. Seattle. San Diego. San Jose. These are the top five U.S. cities with the largest homeless populations. In total, more than 150,000 people. By comparison, Pittsburgh has only 880 this year compared with 692 the year before. The surge is particularly noticeable in the Downtown area. (Photo Credit - Get Marty/Patrick O'Connor)</p>

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