-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 NZXNbfc+VqzN7v1Daex96Q==

<SEC-DOCUMENT>0001269214-04-000016.txt : 20040827
<SEC-HEADER>0001269214-04-000016.hdr.sgml : 20040827
<ACCEPTANCE-DATETIME>20040827093255
ACCESSION NUMBER:		0001269214-04-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040826
FILED AS OF DATE:		20040827
DATE AS OF CHANGE:		20040827

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DEARBORN BANCORP INC /MI/
		CENTRAL INDEX KEY:			0000895541
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				383073622
		STATE OF INCORPORATION:			MI
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		22290 MICHIGAN AVE
		STREET 2:		PO BOX 2247
		CITY:			DEARBORN
		STATE:			MI
		ZIP:			48123-2247
		BUSINESS PHONE:		3132741000

	MAIL ADDRESS:	
		STREET 1:		22290 MICHIGAN AVE
		STREET 2:		P O BOX 2247
		CITY:			DEARBORN
		STATE:			MI
		ZIP:			48123-2247

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DEMMER WILLIAM J
		CENTRAL INDEX KEY:			0001277523

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-24478
		FILM NUMBER:		041000546

	BUSINESS ADDRESS:	
		STREET 1:		16201 BRADNER RD
		CITY:			NORTHVILLE
		STATE:			MI
		ZIP:			48167-2006
		BUSINESS PHONE:		2483486445

	MAIL ADDRESS:	
		STREET 1:		16201 BRADNER RD
		CITY:			NORTHVILLE
		STATE:			MI
		ZIP:			48167-2006
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-08-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000895541</issuerCik>
        <issuerName>DEARBORN BANCORP INC /MI/</issuerName>
        <issuerTradingSymbol>dear</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001277523</rptOwnerCik>
            <rptOwnerName>DEMMER WILLIAM J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>16201 BRADNER RD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTHVILLE</rptOwnerCity>
            <rptOwnerState>MI</rptOwnerState>
            <rptOwnerZipCode>48167-2006</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>common</value>
            </securityTitle>
            <transactionDate>
                <value>2004-08-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>25.51</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>47087</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>William J Demmer</signatureName>
        <signatureDate>2004-08-26</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----