<SEC-DOCUMENT>0001104659-20-041647-index.html : 20200401
<SEC-HEADER>0001104659-20-041647.hdr.sgml : 20200401
<ACCEPTANCE-DATETIME>20200401104817
ACCESSION NUMBER:		0001104659-20-041647
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20200520
FILED AS OF DATE:		20200401
DATE AS OF CHANGE:		20200401
EFFECTIVENESS DATE:		20200401

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COMMUNITY BANK SYSTEM, INC.
		CENTRAL INDEX KEY:			0000723188
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				161213679
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13695
		FILM NUMBER:		20764138

	BUSINESS ADDRESS:	
		STREET 1:		5790 WIDEWATERS PKWY
		CITY:			DEWITT
		STATE:			NY
		ZIP:			13214
		BUSINESS PHONE:		8007242262

	MAIL ADDRESS:	
		STREET 1:		5790 WIDEWATERS PARKWAY
		CITY:			DEWITT
		STATE:			NY
		ZIP:			13214

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMMUNITY BANK NA, a subsidiary of Community Bank System Inc
		DATE OF NAME CHANGE:	20130729

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMMUNITY BANK NA, a subsidiary of Community Bank System Inc.
		DATE OF NAME CHANGE:	20130726

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMMUNITY BANK SYSTEM INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>tm2012019-2_def14a.htm
<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: tm2012019-2_def14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>lg_communitybank.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: lg_communitybank.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>sg_daniellecima-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: sg_daniellecima-bw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>sg_mark-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: sg_mark-bw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>sg_sully-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: sg_sully-bw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>tm2012019_pc-1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: tm2012019_pc-1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>tm2012019_pc-2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: tm2012019_pc-2.jpg

</DOCUMENT>
</SEC-DOCUMENT>