Exhibit 21

Subsidiaries of the Company

• Northwest Savings Bank, a Pennsylvania savings bank

• Northwest Bancorp Capital Trust III, a Delaware statutory business trust

• Northwest Bancorp Statutory Trust IV, a Connecticut statutory business trust

• CSB Trust

Subsidiaries of Northwest Savings Bank

• Northwest Financial Services, Inc., a Pennsylvania corporation

• Great Northwest Corporation, a Pennsylvania corporation

• Northwest Capital Group Inc., a Pennsylvania corporation

• Allegheny Services, Inc., a Delaware corporation

• Northwest Settlement Agency, LLC, a Pennsylvania limited liability company

• Boetger and Associates, Inc., a Pennsylvania corporation

• Northwest Consumer Discount Company, Inc., a Pennsylvania corporation which operates under this name in 15 locations in western and central Pennsylvania and also operates:

o d/b/a Northwest Finance Company in Jamestown and Fredonia, NY, a New York corporation

o d/b/a Butler Consumer Discount Company in six locations in southwestern Pennsylvania

o d/b/a Civic Consumer Discount Company in to locations in southwestern Pennsylvania

o d/b/a Uniontown Financial Services in Uniontown, Pennsylvania

o d/b/a Erie Consumer Discount in three locations in Erie, Pennsylvania

o d/b/a Corry Consumer Discount in Corry, Pennsylvania

o d/b/a Thrift Financial Services in Indiana, Pennsylvania

o d/b/a Clearfield Consumer Discount in Clearfield, Pennsylvania

o d/b/a Titusville Consumer Discount in Titusville, Pennsylvania

o d/b/a Lewistown Consumer Discount in Lewistown, Pennsylvania

o d/b/a Jeannette Financial Services in Jeannette, Pennsylvania

o d/b/a Zelie Consumer Discount in Zelienople, Pennsylvania

o d/b/a Washington Consumer Discount in Washington, Pennsylvania

o d/b/a St. Mary’s Consumer Discount in St. Mary’s, Pennsylvania

o d/b/a Hazelton Financial Services in Hazelton, Pennsylvania

o d/b/a State College Financial Services in State College, Pennsylvania

o d/b/a Pottsville Financial Services in Pottsville, Pennsylvania

o d/b/a Williamsport Financial Services in Williamsport, Pennsylvania

o d/b/a Altoona Financial Services in Altoona, Pennsylvania

o d/b/a Punxsutawney Financial Services in Punxsutawney, Pennsylvania

o d/b/a Huntingdon Financial Services in Huntingdon, Pennsylvania

o d/b/a Belle Vernon Financial Services in Belle Vernon, Pennsylvania

o d/b/a Latrobe Financial Services in Latrobe, Pennsylvania

o d/b/a Bloomsburg Financial Services in Bloomsburg, Pennsylvania

o d/b/a Sunbury Financial Services in Sunbury, Pennsylvania

o d/b/a Meadville Financial Services in Meadville, Pennsylvania

o d/b/a Lock Haven Financial Services in Lock Haven, Pennsylvania