From the Wikipedia page [1]
The Kiev (Kyiv) metropolitan area (Ukrainian: Київська агломерація; Kyyivs’ka ahlomeratsia) is an unofficially-designated urban agglomeration in Ukraine within the Kiev Oblast, consisting of the country's capital city of Kiev, its satellite settlements and nearest rural areas closely bound to the city by employment and commerce. According to different sources, it is ranked among 20 largest metropolitan areas in Europe.
The metropolitan area includes the following cities: Kiev, Berezan, Boryspil, Brovary, Vasylkiv, Irpin, Rzhyschiv, and Fastiv. The city of Kiev also creates a very close conurbation with such cities as Irpin-Bucha, Brovary, Vyshhorod, and Vyshneve, while cities Boyarka and Boryspil are located in close vicinity. The town of Kotsiubynske is located within the city limits of Kiev, while being subordinate to the city council of Irpin.
The agglomeration stretches over some 11 raions of Kiev Oblast: Baryshivka, Boryspil, Borodianka, Brovary, Fastiv, Kaharlyk, Kiev-Sviatoshyn, Makariv, Obukhiv, Vasylkiv and Vyshhorod.