<SEC-DOCUMENT>0001700264-17-000052-index.html : 20170621
<SEC-HEADER>0001700264-17-000052.hdr.sgml : 20170621
<ACCEPTANCE-DATETIME>20170621140434
ACCESSION NUMBER:		0001700264-17-000052
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20161231
FILED AS OF DATE:		20170621
DATE AS OF CHANGE:		20170621

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MFS CALIFORNIA MUNICIPAL FUND
		CENTRAL INDEX KEY:			0001092896
		IRS NUMBER:				043483817
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1130

	BUSINESS ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		6179545000

	MAIL ADDRESS:	
		STREET 1:		111 HUNTINGTON AVENUE
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFS CALIFORNIA INSURED MUNICIPAL FUND
		DATE OF NAME CHANGE:	20070629

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLONIAL CALIFORNIA INSURED MUNICIPAL FUND
		DATE OF NAME CHANGE:	19990927

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PREMIER CALIFORNIA MUNICIPAL INCOME FUND
		DATE OF NAME CHANGE:	19990809

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Uek Robert W
		CENTRAL INDEX KEY:			0001349104

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-09537
		FILM NUMBER:		17922615

	MAIL ADDRESS:	
		STREET 1:		500 BOYLSTON ST
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>poauek.txt
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
Document 2 - file: poauek.txt

</DOCUMENT>
</SEC-DOCUMENT>