<SEC-DOCUMENT>0001821268-22-000114-index.html : 20220506
<SEC-HEADER>0001821268-22-000114.hdr.sgml : 20220506
<ACCEPTANCE-DATETIME>20220506101711
ACCESSION NUMBER:		0001821268-22-000114
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		18
CONFORMED PERIOD OF REPORT:	20220228
FILED AS OF DATE:		20220506
DATE AS OF CHANGE:		20220506
EFFECTIVENESS DATE:		20220506

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		CENTRAL INDEX KEY:			0000885732
		IRS NUMBER:				363828111
		STATE OF INCORPORATION:			MA

	FILING VALUES:
		FORM TYPE:		N-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06623
		FILM NUMBER:		22899315

	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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN INSURED CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19920929

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUVEEN CALIFORNIA SELECT TAX FREE INCOME PORTFOLIO
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>nxc.htm
<DESCRIPTION>NXC
<TEXT>
Document 1 - file: nxc.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>nxc_ex99cert.htm
<DESCRIPTION>CERTIFICATIONS
<TEXT>
Document 2 - file: nxc_ex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>nxc_ex99cert906.htm
<DESCRIPTION>CERTIFICATION
<TEXT>
Document 3 - file: nxc_ex99cert906.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CODE ETH
<SEQUENCE>4
<FILENAME>ex99codeofethics.htm
<DESCRIPTION>CODE OF ETHICS
<TEXT>
Document 4 - file: ex99codeofethics.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>nac-20edgarcover.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: nac-20edgarcover.gif

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<TYPE>GRAPHIC
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: nac-20edgarx2x1.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>nac-20edgarx4x1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: nac-20edgarx4x1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>nac-20edgarx4x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: nac-20edgarx4x2.gif

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<SEQUENCE>9
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<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: nac-20edgarx13x1.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>nac-20edgarx13x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: nac-20edgarx13x2.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>nac-20edgarx15x1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: nac-20edgarx15x1.gif

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>nac-20edgarx15x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: nac-20edgarx15x2.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>nac-20edgarx17x1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: nac-20edgarx17x1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>nac-20edgarx17x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: nac-20edgarx17x2.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>nac-20edgarx19x1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: nac-20edgarx19x1.gif

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<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>nac-20edgarx19x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: nac-20edgarx19x2.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>17
<FILENAME>nac-20edgarx128x1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 17 - file: nac-20edgarx128x1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>18
<FILENAME>nac-20edgarx128x2.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 18 - file: nac-20edgarx128x2.gif

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