According to 2015 census estimates, half of the US population lives in these 143 counties (ranked by population): Los Angeles County, California Cook County, Illinois Harris County, Texas Maricopa ...

A new interactive map of the U.S. shows which states are ... Do you have a question about the U.S. population? Let us know ...

The majority of the state's 67 counties have seen significant population growth over the past three years. The map below ...