N.M. Stat. § 4-3A-1
Cibola county created.
The county of Cibola is hereby created out of that part of Valencia county lying
westerly of the following described line:
begin on the southerly boundary line of Valencia county at its intersection with the
line common to ranges 3 and 4 west, N.M.P.M.; then northerly along the line between
ranges 3 and 4 west to the intersection with the line common to townships 8 and 9
north; then easterly along the line between townships 8 and 9 north and along the
easterly prolongation of this line to its intersection with the westerly boundary line of
Bernalillo county, the point of termination.