<SEC-DOCUMENT>0001140361-11-058593.txt : 20111222
<SEC-HEADER>0001140361-11-058593.hdr.sgml : 20111222
<ACCEPTANCE-DATETIME>20111222105636
ACCESSION NUMBER:		0001140361-11-058593
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20111221
FILED AS OF DATE:		20111222
DATE AS OF CHANGE:		20111222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KUKUCHKA RONALD G
		CENTRAL INDEX KEY:			0001399032

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23863
		FILM NUMBER:		111276320

	MAIL ADDRESS:	
		STREET 1:		PO BOX A
		CITY:			HALLSTEAD
		STATE:			PA
		ZIP:			18822

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PEOPLES FINANCIAL SERVICES CORP.
		CENTRAL INDEX KEY:			0001056943
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				232391852
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		82 FRANKLIN AVENUE
		CITY:			HALLSTEAD
		STATE:			PA
		ZIP:			18822
		BUSINESS PHONE:		5708792175

	MAIL ADDRESS:	
		STREET 1:		82 FRANKLIN AVENUE
		CITY:			HALLSTEAD
		STATE:			PA
		ZIP:			18822

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PEOPLES FINANCIAL SERVICES CORP/
		DATE OF NAME CHANGE:	19980303
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-12-21</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001056943</issuerCik>
        <issuerName>PEOPLES FINANCIAL SERVICES CORP.</issuerName>
        <issuerTradingSymbol>PFIS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001399032</rptOwnerCik>
            <rptOwnerName>KUKUCHKA RONALD G</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>82 FRANKLIN AVE.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HALLSTEAD</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>18822</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2011-12-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>60.176</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>28.25</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20076.690</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Ronald G. Kukuchka</signatureName>
        <signatureDate>2011-12-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
