From Longman Dictionary of Contemporary English(out) in the sticks(out) in the sticksAREAa long way from a town or city They live out in the sticks. → stick
Examples from the Corpus
(out) in the sticks• Three years on, what to make of the original inner city mama, out here in the sticks?• We must have been right out in the sticks.• You two behaved as if we were still in the sticks. 