Can I order warsaw city card at Poczta Polska?
No. But you can get it at all of these locations:
Remember to take a passport-style photo with you (3.5 x 4.5 cm), and your passport.
You can also apply online (you'll need a passport-style photo to send electronically) and then collect the card at the ticket office of your choice. personalizacja.ztm.waw.pl/index.php?l=2