They use these words like they're real words

New FDIC Study Shows One in Four U.S. Households Currently Unbanked or Underbanked -
FDIC: Press Releases - PR-216-2009 12/2/2009

The study, which is the most comprehensive survey to date of the unbanked and underbanked, reveals that more than one quarter (25.6 percent) of all households in the United States are unbanked or underbanked and that those households are disproportionately low-income and/or minority.

unbanked

no dictionary results -- http://dictionary.reference.com/browse/unbanked

underbanked

Of, relating to, or being a new security issue for which the managing underwriter has difficulty obtaining commitments from other underwriters. -- http://dictionary.reference.com/browse/underbanked