Exhibits: Certifications

                            SECTION 906 CERTIFICATION

Pursuant to 18 U.S.C.ss. 1350, the undersigned officers of Federated U.S.
Government Securities Fund: 2-5 Years (the "Registrant"), hereby certify, to the
best of our knowledge, that the Registrant's Report on Form N-CSR for the period
ended July 31, 2005 (the "Report") fully complies with the requirements of
Section 13(a) or 15(d), as applicable, of the Securities and Exchange Act of
1934 and that the information contained in the Report fairly presents, in all
material respects, the financial condition and results of operations of the
Registrant.


Dated: September 14, 2005

/s/ J. Christopher Donahue
J. Christopher Donahue, President, Principal Executive Officer



Dated: September 14, 2005

/s/ Richard J. Thomas
Richard J. Thomas, Treasurer, Principal Financial Officer

This certification is being furnished solely pursuant to 18 U.S.C.ss. 1350 and
is not being filed as part of the Report or as a separate disclosure document.