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    <ACCEPTANCE-DATETIME>20230418090854
    ACCESSION NUMBER:		0001437749-23-010501
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		57
    CONFORMED PERIOD OF REPORT:	20230418
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20230418
    DATE AS OF CHANGE:		20230418

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MERCANTILE BANK CORP
    		CENTRAL INDEX KEY:			0001042729
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				383360865
    		STATE OF INCORPORATION:			MI
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-26719
    		FILM NUMBER:		23825631

    	BUSINESS ADDRESS:
    		STREET 1:		310 LEONARD STREET NW
    		CITY:			GRAND RAPIDS
    		STATE:			MI
    		ZIP:			49504
    		BUSINESS PHONE:		616 406-3000

    	MAIL ADDRESS:
    		STREET 1:		310 LEONARD STREET NW
    		CITY:			GRAND RAPIDS
    		STATE:			MI
    		ZIP:			49504
    </SEC-HEADER>
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    <TYPE>EX-99.1
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    <FILENAME>ex_501606.htm
    <DESCRIPTION>EXHIBIT 99.1
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    <TYPE>EX-99.2
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    <FILENAME>ex_501607.htm
    <DESCRIPTION>EXHIBIT 99.2
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    Document 3 - file: ex_501607.htm

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    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>mbwm-20230418.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
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    Document 9 - file: mbc02.jpg

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    Document 10 - file: mbc03.jpg

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    Document 11 - file: mbc04.jpg

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    Document 12 - file: mbc05.jpg

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    Document 13 - file: mbc06.jpg

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    Document 14 - file: mbc07.jpg

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    Document 15 - file: mbc08.jpg

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    Document 17 - file: mbc10.jpg

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    Document 18 - file: mbc11.jpg

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    Document 24 - file: mbc17.jpg

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    Document 25 - file: mbc18.jpg

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    Document 26 - file: mbc19.jpg

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    Document 27 - file: mbc20.jpg

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    Document 28 - file: mbc21.jpg

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    Document 29 - file: mbc22.jpg

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    Document 30 - file: mbc23.jpg

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    Document 33 - file: mbc26.jpg

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    Document 34 - file: mbc27.jpg

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    Document 35 - file: mbc28.jpg

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    Document 36 - file: mbc29.jpg

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    Document 37 - file: mbc30.jpg

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    <SEQUENCE>38
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    Document 38 - file: mbc31.jpg

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    <SEQUENCE>39
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    Document 39 - file: mbc32.jpg

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    <SEQUENCE>40
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    Document 40 - file: mbc33.jpg

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    <SEQUENCE>41
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    Document 41 - file: mbc34.jpg

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    Document 42 - file: mbc35.jpg

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    <SEQUENCE>43
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    Document 43 - file: mbc36.jpg

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    <SEQUENCE>44
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    Document 44 - file: mbc37.jpg

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    Document 45 - file: mbc38.jpg

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    Document 46 - file: mbc39.jpg

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    Document 47 - file: mbc40.jpg

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    Document 48 - file: mbc41.jpg

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    <SEQUENCE>49
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    Document 49 - file: mcblogo01.jpg

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    Document 51 - RAW XML: mbwm20230417_8k_htm.xml

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    <TYPE>EXCEL
    <SEQUENCE>52
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    <TEXT>
    Document 52 - file: Financial_Report.xlsx

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