 The walkway is submerged during the river floods, mostly in springtime.As of the census taken in April 2001, the ethnic makeup of Žirmūnai was 59.2% Lithuanian, 16.8% Russian (the third highest percentage among Vilnius' elderates, behind Naujoji Vilnia and Naujininkai), 14.4% Poles, 3.8% Belarusian, 1.7% Ukrainian, 0.8% Jewish, 0.2% Tatar, 0.1% Latvian, 0.1% Armenian, and 2.9% other or unspecified ethnicity.According to the 2001 census, Žirmūnai was the most populous elderate in Vilnius (47,410 residents, comprising 8.7% of Vilnius' total population) and the third most populous in Lithuania after Šilainiai and Dainava, Kaunas.