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Kitaadachi (北足立郡, Kita-Adachi-gun) is a district located in Saitama Prefecture, Japan.

As of September 1, 2005, the district has an estimated population of 36,979 and a density of 2,498.58 persons per km². The total area is 14.80 km². (These numbers are excluding those of Fukiage, which merged with a city outside the district on October 1, 2005.)