<SEC-DOCUMENT>0001228532-17-000035.txt : 20170627
<SEC-HEADER>0001228532-17-000035.hdr.sgml : 20170627
<ACCEPTANCE-DATETIME>20170627170656
ACCESSION NUMBER:		0001228532-17-000035
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170623
FILED AS OF DATE:		20170627
DATE AS OF CHANGE:		20170627

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CHESAPEAKE UTILITIES CORP
		CENTRAL INDEX KEY:			0000019745
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION & DISTRIBUTION [4923]
		IRS NUMBER:				510064146
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		909 SILVER LAKE BLVD
		STREET 2:		PO BOX 615
		CITY:			DOVER
		STATE:			DE
		ZIP:			19903-0615
		BUSINESS PHONE:		3027346799

	MAIL ADDRESS:	
		STREET 1:		909 SILVER LAKE BLVD
		CITY:			DOVER
		STATE:			DE
		ZIP:			19904

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Michael P. McMasters
		CENTRAL INDEX KEY:			0001228533

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11590
		FILM NUMBER:		17933041

	BUSINESS ADDRESS:	
		STREET 1:		CHESAPEAKE UTILITIES CORP
		STREET 2:		909 SILVER LAKE BLVD
		CITY:			DOVER
		STATE:			DE
		ZIP:			19904
		BUSINESS PHONE:		3027346799

	MAIL ADDRESS:	
		STREET 1:		909 SILVER LAKE BOULEVARD
		CITY:			DOVER
		STATE:			DE
		ZIP:			19904

	FORMER NAME:	
		FORMER CONFORMED NAME:	MCMASTERS MICHAEL P
		DATE OF NAME CHANGE:	20030422
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>PRIMARY DOCUMENT
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    <periodOfReport>2017-06-23</periodOfReport>

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        <issuerName>CHESAPEAKE UTILITIES CORP</issuerName>
        <issuerTradingSymbol>CPK</issuerTradingSymbol>
    </issuer>

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        <reportingOwnerId>
            <rptOwnerCik>0001228533</rptOwnerCik>
            <rptOwnerName>Michael P. McMasters</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>909 SILVER LAKE BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DOVER</rptOwnerCity>
            <rptOwnerState>DE</rptOwnerState>
            <rptOwnerZipCode>19904</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                    <footnoteId id="F1"/>
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            <transactionDate>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
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                <transactionShares>
                    <value>1600</value>
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                <transactionPricePerShare>
                    <value>74.55</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionShares>
                <transactionPricePerShare>
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                    <value>D</value>
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                <value></value>
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                    <value>100</value>
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                <transactionPricePerShare>
                    <value>74.8</value>
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                    <footnoteId id="F1"/>
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                <transactionCode>S</transactionCode>
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                <value></value>
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                <transactionShares>
                    <value>22</value>
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                <transactionPricePerShare>
                    <value>74.85</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>116438</value>
                    <footnoteId id="F1"/>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>19683</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401k Plan</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Of these shares, 43,901 represent deferred stock units that will be settled on a one-for-one basis in common stock.  Includes 191 shares that were acquired since last filing through reinvestment of dividends under Chesapeake Utilities Corporation's Automatic Dividend Reinvestment and Direct Stock Purchase Plan.</footnote>
        <footnote id="F2">Includes 27 shares of common stock that the reporting person acquired under the 401k Plan between March 2017 and June 2017.  Dividends payable on 401k Plan shares were reinvested to purchase 86 additional shares of Chesapeake Utilities Corporation common stock as filed in the total on the Amendment dated June 23, 2017.</footnote>
        <footnote id="F3">Includes 1 share for the reporting person's spouse that was acquired through the reinvestment of dividends under Chesapeake Utilities Corporation's Automatic Dividend Reinvestment and Direct Stock Purchase Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Beth W. Cooper, by Power of Attorney</signatureName>
        <signatureDate>2017-06-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
