Since this word is made up of a single kanji, it should use the kun'yomi reading. When learning the kanji, you didn't learn that reading, so here's a mnemonic to help you with this word:
You're going to the far north where it's very cold (north pole, perhaps?). One of the most important things you bring with you is a survival kit (きた).
There is a hospital on the north side of the station.
North Korea launched a missile again.
The ghosts in North America are so scary.