1 EXHIBIT 21.1 SUBSIDIARIES WARREN BANCORP, INC. DECEMBER 31, 2000 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 CORPORATION 7/22/94) 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 131