Migration data show that Philadelphia had a net increase of 7,544 people moving here from abroad. But among people who moved to other places in the United States, the city had a net decrease, losing 10,563 people who moved domestically. That number nearly doubled from the previous year - a potentially troublesome indicator for the city's population. Last year was also the first year since the 2010 Census in which Philadelphia had a net loss of residents due to migration, taking into account both domestic and international moves.