Zielona Góra is a county and a city with county-rights, but it is not part of Zielona Gora county.
The city flag of Zielona Góra has a yellow vertical stripe on hoist.
It was adopted 30 June 1965 by the City Council.
Source: Statut Miasta Zielona Góra; Zalacnik #2; Uchwala nr XXIV/255/2000
Rady Miejskiej w Zieloej Gorze z dnia 28 marca 2000r and [gue02]
Jens Pattke, 2 Feb 2003
Zielona Góra is the seat of Zielona Góra county; it is a former
regional seat. A town since 1323, a vassal of the Czech kingdom since 1331,
and annexed to Czechia in 1506 and to Prussia in 1742. In Poland after
1945. Ca. 115.000 inhabitants. German name: Grünberg in Schlesien.
Gwidon S. Naskrent, 6 Sept 2000