Planned Parenthood says it added more than 800 volunteers in Pennsylvania since Donald Trump won the presidential election three weeks ago.
The organization says it usually gets about 20 to 25 new volunteers in a month.
"The outpouring of support that we've seen over the last two weeks is like nothing I have seen in my 12-and-a-half years with Planned Parenthood. It is unprecedented," said Planned Parenthood Pennsylvania Executive Director Sari Stevens.
"A lot of them are putting notes when they volunteer or when they donate," Stevens said. "Whether it's we were there for them, we've had a lot of those. We've had a lot in Mike Pence's name, Donald Trump's name, in honor of their mother, in honor of a staff member who was there for them."
President-elect Donald Trump has pledged to cut off federal funding to the health care organization.