<SEC-DOCUMENT>0001193125-25-002221-index.html : 20250106
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<ACCEPTANCE-DATETIME>20250106170906
ACCESSION NUMBER:		0001193125-25-002221
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		31
CONFORMED PERIOD OF REPORT:	20241031
FILED AS OF DATE:		20250106
DATE AS OF CHANGE:		20250106
EFFECTIVENESS DATE:		20250106

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN MUNICIPAL INCOME FUND INC
		CENTRAL INDEX KEY:			0000830271
		ORGANIZATION NAME:           	
		IRS NUMBER:				363566347
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-05488
		FILM NUMBER:		25512252

	BUSINESS ADDRESS:	
		STREET 1:		333 W WACKER DR
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129178200

	MAIL ADDRESS:	
		STREET 1:		333 W WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>d891792dncsr.htm
<DESCRIPTION>NUVEEN MUNICIPAL INCOME FUND, INC.
<TEXT>
Document 1 - file: d891792dncsr.htm

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<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d891792dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT
<TEXT>
Document 2 - file: d891792dex99cert.htm

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<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>3
<FILENAME>d891792dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT
<TEXT>
Document 3 - file: d891792dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.19(A)(5)
<SEQUENCE>4
<FILENAME>d891792dex9919a5.htm
<DESCRIPTION>CHANGE IN THE REGISTRANT'S INDEPENDENT PUBLIC ACCOUNTANT
<TEXT>
Document 4 - file: d891792dex9919a5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.19C
<SEQUENCE>5
<FILENAME>d891792dex9919c.htm
<DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
Document 5 - file: d891792dex9919c.htm

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<TYPE>EX-99.PROXYVOTE
<SEQUENCE>6
<FILENAME>d891792dex99proxyvote.htm
<DESCRIPTION>EX-99.PROXYVOTE
<TEXT>
Document 6 - file: d891792dex99proxyvote.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>7
<FILENAME>cik0000830271-20241031.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
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<TYPE>EX-101.DEF
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<SEQUENCE>9
<FILENAME>cik0000830271-20241031_lab.xml
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<TYPE>EX-101.PRE
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Document 11 - file: g891792g1g25s10.jpg

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Document 21 - file: g891792sp001.jpg

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<TEXT>
Document 24 - file: R1.htm

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<TYPE>EXCEL
<SEQUENCE>25
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Document 25 - file: Financial_Report.xlsx

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Document 26 - file: Show.js

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<TYPE>XML
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<TEXT>
Document 27 - file: report.css

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<TYPE>XML
<SEQUENCE>29
<FILENAME>FilingSummary.xml
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<TEXT>
Document 29 - file: FilingSummary.html

Document 29 - RAW XML: FilingSummary.xml

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<SEQUENCE>32
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 32 - file: MetaLinks.json

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