<SEC-DOCUMENT>0000891804-20-000186-index.html : 20200605
<SEC-HEADER>0000891804-20-000186.hdr.sgml : 20200605
<ACCEPTANCE-DATETIME>20200605112906
ACCESSION NUMBER:		0000891804-20-000186
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		15
CONFORMED PERIOD OF REPORT:	20200331
FILED AS OF DATE:		20200605
DATE AS OF CHANGE:		20200605
EFFECTIVENESS DATE:		20200605

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:		20945097

	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
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<TYPE>N-CSR
<SEQUENCE>1
<FILENAME>ncsr.htm
<DESCRIPTION>NXC
<TEXT>
Document 1 - file: ncsr.htm

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<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>ex99cert.htm
<DESCRIPTION>CERTIFICATIONS
<TEXT>
Document 2 - file: ex99cert.htm

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<DOCUMENT>
<TYPE>EX-99.906 CERT
<SEQUENCE>3
<FILENAME>ex99906cert.htm
<DESCRIPTION>CERTIFICATION
<TEXT>
Document 3 - file: ex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CODE ETH
<SEQUENCE>4
<FILENAME>ex99proxypolicy.htm
<DESCRIPTION>PROXY POLICY
<TEXT>
Document 4 - file: ex99proxypolicy.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>nxp-19clnx1x1.jpg
<TEXT>
Document 5 - file: nxp-19clnx1x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>nxp-19clnx2x1.jpg
<TEXT>
Document 6 - file: nxp-19clnx2x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>nxp-19clnx4x1.jpg
<TEXT>
Document 7 - file: nxp-19clnx4x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>nxp-19clnx4x2.jpg
<TEXT>
Document 8 - file: nxp-19clnx4x2.jpg

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<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>nxp-19clnx16x1.jpg
<TEXT>
Document 9 - file: nxp-19clnx16x1.jpg

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<FILENAME>nxp-19clnx18x1.jpg
<TEXT>
Document 10 - file: nxp-19clnx18x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>nxp-19clnx20x1.jpg
<TEXT>
Document 11 - file: nxp-19clnx20x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>nxp-19clnx22x1.jpg
<TEXT>
Document 12 - file: nxp-19clnx22x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>nxp-19clnx24x1.jpg
<TEXT>
Document 13 - file: nxp-19clnx24x1.jpg

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<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>nxp-19clnx92x1.jpg
<TEXT>
Document 14 - file: nxp-19clnx92x1.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>nxp-19clnx92x2.jpg
<TEXT>
Document 15 - file: nxp-19clnx92x2.jpg

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