This is IN THE NEWS in VOA Special English.

This week, the United States Census Bureau released its official count of the nation's population. It said the population, as of April 1st, was 308,745,538.

The population increased 9.7 percent in ten years. This was the nation's lowest growth rate since the 1930s. Experts say this was a result of falling birth rates among some groups and fewer immigrants because of the recession.

Two states had the largest population increases. Texas gained more than four million people -- more than any other state. Nevada was the fastest growing state. Its population increased 35 percent from the last census in 2000.

Across the country, the largest increases were in southern and western states. The population continues to move from the Northeast and Midwest to the South and West. This has been happening for the past 40 years.

The United States Constitution calls for a census of the nation's population every ten years. This must be done to equally divide the 435 voting districts in the House of Representatives among the states. Each House member represents, on average, about 700,000 people. The states with the biggest populations have more congressional seats than less populated states. The most populated state, California, has 53 House seats. The least populous, Wyoming, has only one seat.

Eighteen states will gain or lose seats in the House because of the census results. Texas will gain four seats, more than any other state. Florida will gain two seats. Six states in the South and West will each gain one seat. Ohio and New York will lose two House seats each.

Eight states, mostly in the Northeast and Midwest, will lose one seat each.

Some experts say the census report was possible good news for the Republican Party. Most of the states that will gain seats usually support Republicans. Many of the states losing seats usually vote for Democrats. Amy Walter is political director for ABC News.

AMY WALTER: "There are some experts who are looking at this data and saying that based on what they see now, Republicans could add ten more seats to their total."

State legislatures and governors are responsible for setting the borders of congressional districts. Republican gains in the elections last month will strengthen their power in the redistricting process that is to begin next year.

The change in House seats might also affect the voting for president. Under the Constitution, the number of electoral votes each state has is based on its total number of House and Senate seats. Adding some House seats to the South and West might help the Republican candidate for president in 2012.

The census report shows that Hispanics are a major reason for population growth in states like Texas, Arizona and Florida. Since Hispanics usually vote Democratic, experts say this may help Democrats in the long-term.

And that's IN THE NEWS in VOA Special English. I'm Steve Ember.

Related stories:

Policies, politics and dollars rest on US census

Census focuses on foreigners

The Week Nov 12, 2010

US population estimated to reach 400 million by 2043

（來源：VOA 編輯：崔旭燕）