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Tchianhoun-Cossi
Tchianhoun-Cossi
is a
town
and
arrondissement
in the
Atakora Department
of
northwestern
Benin
. It is an
administrative division
under the
jurisdiction
of the
commune
of
Matéri
. According to the
population census
conducted
by the
Institut National de la Statistique Benin
on
February 15
,
2002
, the arrondissement had a total population of 16,625.