EXHIBIT 24.1

POWER OF ATTORNEY

The undersigned members of the Board of Directors and Executive Officers of Enterprise Financial Services Corp, a Delaware corporation (the “Company”) hereby appoint Frank H. Sanfilippo or Kevin C. Eichner as their Attorney-in-Fact for the purpose of signing the Company’s Securities Exchange Commission Form 10-K (and any and all Amendments thereto) for the year ended December 31, 2004.

Dated: January 26, 2005

Signatures	Title
/s/ PAUL J. MCKEE, JR.	Chairman of the Board of Directors
Paul J. McKee, Jr.
/s/ KEVIN C. EICHNER	Chief Executive Officer and Director
Kevin C. Eichner
/s/ PETER F. BENOIST	Executive Vice President and Director
Peter F. Benoist
/s/ PAUL R. CAHN	Director
Paul R. Cahn
/s/ WILLIAM H. DOWNEY	Director
William H. Downey
/s/ ROBERT E. GUEST, JR.	Director
Robert E. Guest, Jr.
/s/ RICHARD S. MASINTON	Director
Richard S. Masinton
/s/ BIRCH M. MULLINS	Director
Birch M. Mullins
/s/ JAMES J. MURPHY	Director
James Murphy
/s/ ROBERT E. SAUR	Director
Robert E. Saur
/s/ SANDRA VAN TREASE	Director
Sandra Van Trease
/s/ HENRY D. WARSHAW	Director
Henry D. Warshaw