Per the Polonia Facebook page:

I am sorry to announce that on this Christmas Eve Polonia will be closing its doors permanently. We would like to thank all of our amazing customers who have supported us this quarter of a century. As all good things, Polonia’s time has come to an end. It is time for new ventures. Keep your ears open for NYC Pierogi Factory. And again… Thank You!

Jozef and Renata Jurczyk opened Polonia in 1989. Per the Polonia website:

Jozef and Renata were both born in Poland and traveled to New York City in the early 1980’s in hopes of following The American Dream. Arriving in the US with very little money, they both worked dead end jobs until saving enough money to open their own business, a restaurant which would allow them to share their culture and memories with other New Yorkers living in this dominantly Ukrainian and Eastern European neighborhood — The East Village.