    <SEC-DOCUMENT>0000739421-21-000017-index.html : 20210426
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    <ACCEPTANCE-DATETIME>20210426103059
    ACCESSION NUMBER:		0000739421-21-000017
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		35
    CONFORMED PERIOD OF REPORT:	20210420
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Submission of Matters to a Vote of Security Holders
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210426
    DATE AS OF CHANGE:		20210426

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CITIZENS FINANCIAL SERVICES INC
    		CENTRAL INDEX KEY:			0000739421
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				232265045
    		STATE OF INCORPORATION:			PA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-13222
    		FILM NUMBER:		21852236

    	BUSINESS ADDRESS:
    		STREET 1:		15 S MAIN ST
    		CITY:			MANSFIELD
    		STATE:			PA
    		ZIP:			16933
    		BUSINESS PHONE:		570-662-0444

    	MAIL ADDRESS:
    		STREET 1:		15 S MAIN ST
    		CITY:			MANSFIELD
    		STATE:			PA
    		ZIP:			16933
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    <SEQUENCE>1
    <FILENAME>annualmeetingresults2021.htm
    <DESCRIPTION>2021 ANNUAL MEETING RESULTS
    <TEXT>
    Document 1 - file: annualmeetingresults2021.htm

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    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>restatedarticles.htm
    <DESCRIPTION>ARTICLES OF AMENDMENT
    <TEXT>
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    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>investorpresentation.htm
    <DESCRIPTION>INVESTOR PRESENTATION
    <TEXT>
    Document 3 - file: investorpresentation.htm

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    <SEQUENCE>4
    <FILENAME>pressrelease.htm
    <DESCRIPTION>PRESS RELEASE
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    <SEQUENCE>33
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    <TYPE>JSON
    <SEQUENCE>35
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