The FA announced the October 7 friendly, which is dependent on England qualifying for the World Cup, at 2pm on Tuesday.
That prompted a huge surge in demand for tickets which saw the organisation's website crash and online queues of over 45,000 people.
By this 10am this morning, more than two-thirds of the 90,000-seater national stadium had already sold out, with another capacity crowd expected.
More than 87,000 supporters watched England win the European Championship at Wembley on Sunday, with a record 17.4 million peak audience tuning in on BBC One.
The USA are the reigning world champions after beating England in the semi-final in France three years ago, with Sarina Wiegman's side aiming to dethrone them at next summer's World Cup in Australia and New Zealand.