Exhibit 24

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Dennis A. DeGennaro
	Dennis A. DeGennaro

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Brian C. Flynn
	Brian C. Flynn

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Thomas O. Maggs
	Thomas O. Maggs

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Anthony J. Marinello
	Dr. Anthony J. Marinello

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Robert J. McCormick
	Robert J. McCormick

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ William D. Powers
	William D. Powers

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ William J. Purdy
	William J. Purdy

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Robert M. Leonard
	Robert M. Leonard

POWER OF ATTORNEY

REGISTRATION STATEMENT

of

TRUSTCO BANK CORP NY

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Robert J. McCormick, Robert M. Leonard or Michael M. Ozimek, and each of them, his true and lawful attorneys-in-fact and agents with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign this Registration Statement on Form S‑3 and any or all amendments (including post-effective amendments) of and supplements to this Registration Statement and any Registration Statement relating to any offering made pursuant to this Registration Statement that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto such attorneys-in-fact and agents and each of them full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, to all intents and purposes and as fully as they might or could do in person, hereby ratifying and confirming all that such attorneys-in-fact and agents, or their substitutes, may lawfully do or cause to be done by virtue hereof.

Dated: May 16, 2017
	/s/ Michael M. Ozimek
	Michael M. Ozimek