**EXHIBIT
      99.1**








**FOR
                IMMEDIATE RELEASE**
            **For
                More Information Contact:**Dena
                M. HallVice
                President(413)
                787-1700**UNITED
                FINANCIAL BANCORP, INC. ANNOUNCES ADOPTION OF
                PLAN****TO
                CONDUCT SECOND-STEP CONVERSION
                AND OFFERING**


**WEST
      SPRINGFIELD, MASSACHUSETTS--May 21, 2007**-- United Financial Bancorp,
      Inc. (the "Company") (NASDAQ: UBNK), the holding company for United Bank (the
      “Bank”) today announced that the Board of Directors of its mutual holding
      company, United Mutual Holding Company (the "Mutual Holding Company"), has
      adopted a plan to convert the Mutual Holding Company from the mutual to the
      stock form of organization.  The Mutual Holding Company is a federally
      chartered mutual holding company and owns approximately 53.8% of the outstanding
      shares of common stock of the Company, which in turn owns 100% of the issued
      and
      outstanding shares of the capital stock of the Bank.





“We
      are
      enthusiastic about the conversion and the opportunities it will afford us in
      the
      years ahead,” said Richard B. Collins, Chairman, President and CEO referencing
      the conversion plan.  “The capital we raise will better position us to
      grow our franchise, respond to changing regulatory and market conditions and
      offer greater flexibility to effect corporate transactions including mergers,
      acquisitions and branch expansions.”





In
      connection with the conversion, shares of common stock of a new successor
      holding company, representing the ownership interest of the Mutual Holding
      Company, will be offered for sale to depositors of the Bank.  The
      following persons and employee benefit plan have subscription rights to purchase
      shares of common stock of the new holding company in the following order of
      priority:  (1) depositors of record as of March 31, 2006; (2) the
      Bank's employee stock ownership plan; (3) depositors of record as of the end
      of
      the calendar quarter immediately preceding the commencement of the offering;
      and
      (4) depositors entitled to vote on the conversion proposal. If necessary, shares
      also will be offered to the general public.  In addition, upon
      completion of the conversion of the Mutual Holding Company, shares of the
      Company's common stock held by public stockholders will be exchanged for shares
      of the new holding company, which will be the Bank's new parent holding
      company.  As a result of the conversion and offering, the Mutual
      Holding Company and the Company will cease to exist.





The
      conversion is subject to approval of the Office of Thrift Supervision as well
      as
      the approval of the Mutual Holding Company's members (*i.e.,*depositors
      of the Bank) and the Company's stockholders.  Proxy materials setting
      forth information relating to the conversion and offering will be sent to the
      members of the Mutual Holding Company and stockholders of the Company for their
      consideration.  The offering will be made only by means of a
      prospectus in accordance with federal law and all applicable state securities
      laws. This press release shall not constitute an offer to sell or the
      solicitation of an offer to buy any securities.  The conversion and
      offering are expected to be completed early in the fourth quarter of
      2007.





The
      Bank's normal business operations will continue without interruption during
      the
      conversion and offering process.  The transaction will not affect the
      existing terms and conditions of deposit accounts and loans with the
      Bank.  Deposit accounts will continue to be insured by the Federal
      Deposit Insurance Corporation to the fullest extent permitted by
      law.





United
      Financial Bancorp, Inc. was formed in 2005 and is the holding company for United
      Bank, a federally chartered and insured stock savings bank.  The
      Company completed its initial public stock offering in July
      2005.  Investors may obtain additional information about United
      Financial Bancorp, Inc. on the Internet at www.bankatunited.com, under
      the Investor Relations section.





United
      Bank, with approximately $1.0 billion in assets as of March 31, 2007, is a
      community-oriented financial institution.  It serves Western
      Massachusetts through 13 offices.





This
      news
      release contains forward-looking statements within the meaning of the federal
      securities laws. Statements in this release that are not strictly historical
      are
      forward-looking and are based upon current expectations that may differ
      materially from actual results.  These forward-looking statements,
      identified by words such as "will," "expected," "believe," and "prospects,"
      involve risks and uncertainties that could cause actual results to differ
      materially from those anticipated by the statements made
      herein.  These risks and uncertainties involve general economic trends
      and changes in interest rates, increased competition, changes in consumer demand
      for financial services, the possibility of unforeseen events affecting the
      industry generally, the uncertainties associated with newly developed or
      acquired operations, and market disruptions and other effects of terrorist
      activities.  The Company undertakes no obligation to release revisions
      to these forward-looking statements publicly to reflect events or circumstances
      after the date hereof
      or
      to reflect the occurrence of unforeseen events, except as required to be
      reported under the rules and regulations of the Securities and Exchange
      Commission.





*This
      news release is not an offer to sell or the solicitation of an offer to buy
      the
      common stock, which is made only pursuant to a prospectus, nor shall there
      be
      any sale of common stock in any state in which such offer, solicitation or
      sale
      would be unlawful before registration or qualification under the securities
      laws
      of any such state.*