EXHIBIT 21.1 ================================================================================ SUBSIDIARIES WARREN BANCORP, INC. DECEMBER 31, 2001 ================================================================================ -------------------------- WARREN BANCORP, INC. -------------------------- | | ---------------------------------------------- WARREN FIVE CENTS SAVINGS BANK ---------------------------------------------- | | | =========== ============ ============= ============== ================= =========== | | | | | | - ----------- ------------ ------------- -------------- ----------------- ----------- NORTHBANK NORTHBANK HANNAH WARREN PEABODY COMMUNITY WARREN FINANCIAL REALTY, INC. BROKERAGE SECURITIES DEVELOPMENT REAL ESTATE CORPORATION SERVICE, INC. CORPORATION II CORPORATION INVESTMENT (inactive 7/22/94) CORPORATION - ----------- ------------ ------------- -------------- ----------------- ----------- Warren Bancorp, Inc. owns 100% of Warren Five Cents Savings Bank Warren Five Cents Savings Bank owns 100% of all subsidiaries Warren Bancorp, Inc. and all subsidiaries listed above are located in Peabody, Massachusetts