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 Keene S. Turner or James Lally as their Attorney-in-Fact for the purpose of signing the Company's Securities Exchange Commission Form 10-K (and any amendments thereto) for the year ended December 31, 2017.

Signature	Title	Date
/s/ John S. Eulich	Chairman of the Board of Directors	February 23, 2018
John S. Eulich
/s/ John Q. Arnold	Director	February 23, 2018
John Q. Arnold
/s/ Michael A. DeCola	Director	February 23, 2018
Michael A. DeCola
/s/ William H. Downey	Director	February 23, 2018
William H. Downey
/s/ Robert E. Guest, Jr.	Director	February 23, 2018
Robert E. Guest, Jr.
/s/ James M. Havel	Director	February 23, 2018
James M. Havel
/s/ Judith S. Heeter	Director	February 23, 2018
Judith S. Heeter
/s/ Michael R. Holmes	Director	February 23, 2018
Michael R. Holmes
/s/ Nevada A. Kent, IV	Director	February 23, 2018
Nevada A. Kent, IV
/s/ James J. Murphy, Jr.	Director	February 23, 2018
James J. Murphy, Jr.
/s/ Eloise E. Schmitz	Director	February 23, 2018
Eloise E. Schmitz
/s/ Sandra A. Van Trease	Director	February 23, 2018
Sandra A. Van Trease
	Director	February 23, 2018
Michael W. Walsh