Walmart is shutting down its last two stores in Portland

(Credit: Ben McCanna—Portland Press Herald/Getty Images)

The last two Walmart stores in the city limits of Portland, Ore., are throwing in the towel.

The big-box retailer says it will close the stores on March 24, as sales have not met expectations. That will impact 580 employees, though they will be given the option to transfer to other Walmart stores, the company said.