NEW YORK — Rite Aid Corp. and Dollar General Corp. have joined the American Express Free Cash Reload network.

American Express said Tuesday that the addition of the two retail chains gives the free cash-loading network — the nation’s largest — more than 45,000 locations overall, including Walmart, CVS/pharmacy, Family Dollar and 7-Eleven stores.

Rite Aid operates nearly 4,562 drug stores in 31 states and the District of Columbia, and Dollar General has 12,396 deep discount stores in 43 states.

“We are thrilled to add Dollar General and Rite Aid to our Free Cash Reload network, giving account holders even more places to add cash at convenient locations in their communities,” Stefan Happ, chief commercial officer for enterprise growth at American Express, said in a statement. “We know our account holders frequently add cash to their accounts in order to pay bills and shop online, and we’re pleased to give them easier access to more free cash-loading locations where they’re already shopping for everyday items.”

The network can be used by holders of American Express Serve Free Reload prepaid debit cards. After consumers add cash to their eligible American Express Serve account at the register, the money is available to use immediately in-store or online, wherever American Express cards are accepted. Account holders can also use the funds to pay bills, transfer money to others with Serve accounts or put funds aside in a linked reserve for future purchases.

“We are dedicated to serving our customers with everyday low prices and convenience,” stated Jim Thorpe, executive vice president and chief merchandising officer at Dollar General. “Providing the American Express Free Cash Reload service at our more than 12,000 locations across America provides our shoppers with additional financial flexibility which can help them save time and save money at Dollar General.”