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Epsilon Sigma Phi Tax Identification

Epsilon Sigma Phi -The National Honorary Extension Fraternity, Inc (Legal name)

Formed in 1927 we are a non-profit organization dedicated to the professional development of university faculty & staff as part of the National Cooperative Extension system serving counties and citizens across the nation. 

Epsilon Sigma Phi is recognized by the IRS as a 501(c)(3) non-profit organization since 1984 and is currently incorporated in the State of Georgia.

Request an Epsilon Sigma Phi IRS W-9 Form for downloading and printing as needed.

Epsilon Sigma Phi
PO Box 1286
Owasso, Oklahoma 74055


Epsilon Sigma Phi is governed by a volunteer board of directors with no employees. Our business functions are supported by an association management company.


PO Box 1440

Owasso, Oklahoma 74055 

Phone: 918-376-0841

              Email:  espoffice@espnational.org                

Epsilon Sigma Phi is a 501(c)3 non-profit organization. 

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