The annual state population estimates released by the Census Bureau show that Pennsylvania is likely to lose one congressional seat next year, write Janet Adamy and Paul Overberg for The Wall Street Journal.

The data was gathered separately from decennial census responses, which will be used by lawmakers during the first half of next year to redistribute seats in the House of Representatives.

Since the latest figures measure the population just a few months after the main census reference date, they give a close approximation of the count.

According to estimates released last week, many midwestern and northeastern states continue to see their populations drop, while large southern states are seeing their populations grow.

The Keystone State has seen its population decrease and is one of 10 states that are likely to each lose one congressional seat.

The other nine states are Alabama, California, Illinois, Michigan, Minnesota, New York, Ohio, Rhode Island, and West Virginia.

Meanwhile, Texas is expected to gain three congressional seats, and Florida will likely gain two. Five other states are expected to gain one seat, including Arizona, Colorado, Montana, North Carolina, and Oregon.

Read more about the congressional seats at The Wall Street Journal by clicking here.