<SEC-DOCUMENT>0001821268-20-000134-index.html : 20201204
<SEC-HEADER>0001821268-20-000134.hdr.sgml : 20201204
<ACCEPTANCE-DATETIME>20201204101018
ACCESSION NUMBER:		0001821268-20-000134
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		14
CONFORMED PERIOD OF REPORT:	20200930
FILED AS OF DATE:		20201204
DATE AS OF CHANGE:		20201204
EFFECTIVENESS DATE:		20201204

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-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06623
		FILM NUMBER:		201368957

	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-CSRS
<SEQUENCE>1
<FILENAME>ncsr.htm
<DESCRIPTION>NXC
<TEXT>
Document 1 - file: ncsr.htm

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

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>nxp-15tosizex1x1.jpg
<TEXT>
Document 4 - file: nxp-15tosizex1x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>nxp-15tosizex2x1.jpg
<TEXT>
Document 5 - file: nxp-15tosizex2x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>nxp-15tosizex4x1.jpg
<TEXT>
Document 6 - file: nxp-15tosizex4x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>nxp-15tosizex4x2.jpg
<TEXT>
Document 7 - file: nxp-15tosizex4x2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>nxp-15tosizex12x1.jpg
<TEXT>
Document 8 - file: nxp-15tosizex12x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>nxp-15tosizex14x1.jpg
<TEXT>
Document 9 - file: nxp-15tosizex14x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>nxp-15tosizex16x1.jpg
<TEXT>
Document 10 - file: nxp-15tosizex16x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>nxp-15tosizex18x1.jpg
<TEXT>
Document 11 - file: nxp-15tosizex18x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>nxp-15tosizex20x1.jpg
<TEXT>
Document 12 - file: nxp-15tosizex20x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>nxp-15tosizex92x1.jpg
<TEXT>
Document 13 - file: nxp-15tosizex92x1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>nxp-15tosizex92x2.jpg
<TEXT>
Document 14 - file: nxp-15tosizex92x2.jpg

</DOCUMENT>
</SEC-DOCUMENT>