There are several venues in the Tri-State area:

Morristown Town Hall, Morristown, NJ

https://www.womensmarchnj2018.com/

Central Park West, New York City

https://www.eventbrite.com/e/2018-womens-march-on-nyc-tickets-39150171216

Benjamin Franklin Parkway, Philadelphia, PA

https://www.eventbrite.com/e/womens-march-on-philadelphia-2018-tickets-41102604998?aff=efbeventtix