Filed pursuant to Rule 424(b)(3)
                                                     Registration No. 333-144245

                  PROSPECTUS SUPPLEMENT DATED NOVEMBER 16, 2007
              SUPPLEMENTS UNITED FINANCIAL BANCORP, INC. PROSPECTUS
                             DATED OCTOBER 12, 2007

                         UNITED FINANCIAL BANCORP, INC.
                   (Proposed Holding Company for United Bank)

     This  supplements the prospectus of United Financial  Bancorp,  Inc., dated
October 12, 2007.  This prospectus  supplement  should be read together with the
prospectus.

     The subscription  offering and the community  offering have concluded.

     The subscription offering and community offering portion of our second-step
conversion  concluded  on  November  14,  2007.  A total  of 1,123  orders  from
depositors and others were received in the subscription and community  offering,
totaling  2,344,028 shares (not including shares to be purchased by the employee
stock ownership plan). The number of shares available for sale in the syndicated
offering  will be  reduced  by the  number  of shares  sold in the  subscription
offering and in the community offering. In order to complete the offering of our
common stock, we must sell at least 9,562,500  shares of common stock,  which is
the minimum of our  offering  range.  We retain the right to accept or reject in
whole or in part any order in the syndicated offering.

     We are  increasing  the  number  of  shares  that you may  purchase  in all
categories of the offering combined.

     The individual  purchase limitation of 200,000 shares has been increased to
475,000 shares.

     The purchase limitation for persons, with associates or with persons acting
in concert, has been increased from 400,000 shares to 475,000 shares.

     The  ownership  limitations  for current  United  Financial  Bancorp,  Inc.
stockholders disclosed in the prospectus remain unchanged.

     If you previously have submitted an order in the subscription  offering for
200,000  shares,  you may increase your order by submitting an additional  stock
order form for the additional shares with full payment for the additional shares
ordered.  If you wish to increase  your order,  we must receive  your  completed
stock  order  form,  with full  payment  or direct  deposit  account  withdrawal
authorization, not later than 5:00 PM, Eastern time, on November 23, 2007. These
securities are not deposits or accounts and are not insured or guaranteed by the
Federal Deposit Insurance  Corporation or any other government  agency.  Neither
the Securities and Exchange Commission, the Office of Thrift Supervision nor any
state  securities  regulator has approved or disapproved of these  securities or
determined if this Prospectus is accurate or complete. Any representation to the
contrary is a criminal offense.

                             KEEFE, BRUYETTE & WOODS


          The date of this prospectus supplement is November 16, 2007.