Group | Number of regions | Composition |
1 | 33 | Republics: Mari-El, Mordovia, Tatarstan, Chuvashia. Krasnodar District. Oblasts: Belgorod, Bryansk, Vladimir, Vologda, Ivanovo, Kaliningrad, Kaluga, Kirov, Kostroma, Kursk, Leningrad, Lipetsk, Magadan, Moscow, Murmansk, Nizhniy Novgorod, Novgorod, Oryol, Pskov, Penza, Ryazan, Samara, Saratov, Smolensk, Tambov, Tver, Tula, Yaroslavl. |
2 | 15 | Republics: Bashkortostan, Udmurtia, Khakassia. Districts: Krasnoyarsk, Stavropol. Oblasts: Kemerovo, Novosibirsk, Orenburg, Omsk, Tyumen, Chelyabinsk. Nenets, Khanti-Mansi, Chukotka, Yamalo-Nenets Autonomous Okrugs. |
3 | 13 | Republics: Adigeya, Karelia. Districts: Altai, Kamchatka, Primorye. Oblasts: Arkhangelsk, Voronezh, Volgograd, Kurgan, Rostov, Sakhalin, Sverdlovsk, Ulyanovsk. |
4 | 20 | Republics: Altai, Buryatia, Dagestan, Ingush, Kabardino-Balkaria, Kalmyk, Karachayevo-Cherkessk, Komi, Sakha (Yakutia), North Ossetia-Alania, Tyva, Chechnya. Districts: Zabaikalian, Perm, Khabarovsk. Oblasts: Amur, Astrakhan, Irkutsk, Tomsk. Jewish Autonomous Oblast. |