How old is Elizabeth Bennet in Pride and Prejudice the novel by Jane Austen?

Elizabeth Bennet is 20 in the novel Pride and Prejudice.

From the novel:

Lady Catherine seemed quite astonished at not receiving a direct answer;
and Elizabeth suspected herself to be the first creature who had ever
dared to trifle with so much dignified impertinence.

"You cannot be more than twenty, I am sure, therefore you need not
conceal your age."

"I am not one-and-twenty."

Welcome to For Pride and Prejudice

For Pride and Prejudice is a resourceful tool for avid readers to submerge themselves into the realm of Jane Austen's Pride and Prejudi...