If Louisiana census statistics continue as they are now, then Orleans and St. Bernard parishes will pick up seats in the state House of Representatives come 2020 – probably at the expense of Jefferson and East Baton Rouge parishes, according to political pollster John Couvillon of JMC Enterprises of Louisiana.

Additionally, robust growth from Lafayette to Slidell along the Interstate 10/Interstate 12 corridor indicates a new legislative district that includes parts of Baton Rouge suburbs and the North Shore, while another seat could be created in and around Lafayette.

Caddo and central/northeast Louisiana each would likely lose a House seat, he wrote.

Since the Louisiana House is fixed at 105 seats, those four gained seats have to be offset somewhere and that is done by charting shifting population, along with a healthy dose of politics, Couvillon writes in a blog post.

The U.S. Constitution requires an official count of the nation’s population every 10 years – the next one is due in 2020. But the U.S. Census Bureau, headquartered in Suitland, Md., released its latest estimates on Wednesday.

As of July 1, Louisiana’s population was estimated at 4,670,724. That’s up 3 percent since 2010, the last official census. Nationally, the growth rate is 4 percent.

Couvillon noted that 36 out of 64 Louisiana parishes lost population.