Depictions of women and civil rights leaders will also be part of new US currency designs.

WASHINGTON — The Treasury Department will announce on Wednesday afternoon that Harriet Tubman, an African-American who ferried thousands of slaves to freedom, will replace the slaveholding Andrew Jackson on the center of a new $20 note, according to a Treasury official, while the newly popular Alexander Hamilton will remain on the face of the $10 bill.

Other depictions of women and civil rights leaders will also be part of new currency designs.

The redesigns, from the Bureau of Engraving and Printing, would be announced in 2020 in time for the centennial of woman’s suffrage and the 19th Amendment to the Constitution. None of the bills, including a new $5 note, would reach circulation until the next decade.

It was unclear whether details of the unexpectedly sweeping changes would mollify some women’s groups, who had excoriated Treasury SecretaryJacob J. Lew for reneging on his 10-month-old commitment to put a woman on the face of the $10 bill, which is the one currently in line for an anti-counterfeiting makeover.

But in the months of taking public comments on what woman he should pick, Mr. Lew evidently bowed to the Broadway-stoked mania around the $10 bill’s current star, Alexander Hamilton.

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