Is Siberia Above the Arctic Circle? Mostly No, But Parts Are

Siberia as a whole lies mostly BELOW the Arctic Circle.

The Line

Arctic Circle = 66°33′48″ N (variable ±2° over 40,000-year cycle). North of this: at least one day of midnight sun / polar night per year.

Siberia's Latitude Span

• Southern edge: ~50° N (Altai, Tuva, border with Mongolia/Kazakhstan/China).
• Northern edge: ~77° N (Cape Chelyuskin, Severnaya Zemlya – Russian High Arctic).
• Major cities: Novosibirsk (55°), Omsk (55°), Krasnoyarsk (56°), Irkutsk (52°), Yakutsk (62°), Norilsk (69°), Vorkuta (67°).

What's Above the Circle?

• Norilsk, Vorkuta, Igarka, Dudinka, Tiksi, Pevek – industrial/mining cities.
• Yamal Peninsula – gas fields (Bovanenkovo), Nenets reindeer herders.
• Taimyr Peninsula – northernmost mainland Eurasia.
• Arctic islands: Severnaya Zemlya, New Siberian Islands.
• ~25–30% of Siberia's land area is north of 66.5°.

What's Below?

• Almost all population (Novosibirsk 1.6M, Yekaterinburg 1.5M, Omsk 1.1M, Chelyabinsk 1.1M, Krasnoyarsk 1.1M).
• Trans-Siberian Railway (mostly 55°–57°).
• Taiga, steppe, agriculture, most resources.

Yakutsk (62°N) – The Coldest City

Capital of Sakha (Yakutia), 300K people, below Arctic Circle. But winter avg -40°C, permafrost 100s of meters deep. "Pole of Cold" (Oymyakon, Verkhoyansk) are at 63°–67°N—still mostly below the Circle.

So: Siberia straddles the Arctic Circle. Its heart is south; its crown is north.