persons of moderate income
(20) (A) The terms “persons of low and moderate income” and “low- and moderate-income persons” mean families and individuals whose incomes do not exceed 80 percent of the median income of the area involved, as determined by the Secretary with adjustments for smaller and larger families. The term “persons of low income” means families and individuals whose incomes do not exceed 50 percent of the median income of the area involved, as determined by the Secretary with adjustments for smaller and larger families. The term “persons of moderate income” means families and individuals whose incomes exceed 50 percent, but do not exceed 80 percent, of the median income of the area involved, as determined by the Secretary with adjustments for smaller and larger families. For purposes of such terms, the area involved shall be determined in the same manner as such area is determined for purposes of assistance under section 1437f of this title . (B) The Secretary may establish percentages of median income for any area that are higher or lower than the percentages set forth in subparagraph (A), if the Secretary finds such variations to be necessary because of unusually high or low family incomes in such area.