Early life

Jackson was born in Vancouver, British Columbia, Canada, the son of Fiona Jackson, a casting director, and John Carter. Jackson's father is from Texas and his mother is a native of Ballyfermot, Dublin, Ireland, having immigrated to North America in the late 1960s. He has a sister, Aisleagh, and two half-brothers, Lyman and Jonathan Carter from his father's first marriage. Jackson grew up in California until the age of 8. He then moved to Seattle where he attended Einstein Middle School in Shoreline, Washington. Shortly thereafter, he moved back to Vancouver with his mother and younger sister. He briefly attended Ideal Mini School and later switched to Kitsilano Secondary School.