<SEC-DOCUMENT>0001193125-24-253793-index.html : 20241108
<SEC-HEADER>0001193125-24-253793.hdr.sgml : 20241108
<ACCEPTANCE-DATETIME>20241108100000
ACCESSION NUMBER:		0001193125-24-253793
CONFORMED SUBMISSION TYPE:	N-CSRS
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20240831
FILED AS OF DATE:		20241108
DATE AS OF CHANGE:		20241108
EFFECTIVENESS DATE:		20241108

FILER:

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

	FILING VALUES:
		FORM TYPE:		N-CSRS
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-06623
		FILM NUMBER:		241438339

	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>d872873dncsrs.htm
<DESCRIPTION>NUVEEN CALIFORNIA SELECT TAX-FREE INCOME PORTFOLIO
<TEXT>
Document 1 - file: d872873dncsrs.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d872873dex99cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT
<TEXT>
Document 2 - file: d872873dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(19)(A)(5)
<SEQUENCE>3
<FILENAME>d872873dex9919a5.htm
<DESCRIPTION>CHANGE IN THE REGISTRANT'S INDEPENDENT PUBLIC ACCOUNTANT
<TEXT>
Document 3 - file: d872873dex9919a5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>4
<FILENAME>d872873dex99906cert.htm
<DESCRIPTION>CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT
<TEXT>
Document 4 - file: d872873dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g872873g40u71.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g872873g40u71.jpg

</DOCUMENT>
</SEC-DOCUMENT>