Washington was awarded a 10th Congressional district in December after Census figures showed that the state’s population had grown by 14 percent in the past decade.
Redistricting is required every 10 years to redraw boundaries so political districts contain nearly identical populations.
The four members of the commission were sworn in in Olympia.
The members include: Former U.S. Sen. Slade Gorton, former GOP legislator Tom Huff, former Seattle Deputy Mayor Tim Ceis and Dean Foster, former chief of staff for Gov. Booth Gardner.
The commission chose Gorton as their temporary chairman. The bipartisan group expects to have a permanent chair by the end of this month.