<SEC-DOCUMENT>0001193125-18-120919-index.html : 20180418
<SEC-HEADER>0001193125-18-120919.hdr.sgml : 20180418
<ACCEPTANCE-DATETIME>20180418151102
ACCESSION NUMBER:		0001193125-18-120919
CONFORMED SUBMISSION TYPE:	N-Q
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20180228
FILED AS OF DATE:		20180418
DATE AS OF CHANGE:		20180418
EFFECTIVENESS DATE:		20180418

FILER:

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

	FILING VALUES:
		FORM TYPE:		N-Q
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-09537
		FILM NUMBER:		18761059

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>N-Q
<SEQUENCE>1
<FILENAME>d510778dnq.htm
<DESCRIPTION>MFS CALIFORNIA MUNICIPAL FUND N-Q
<TEXT>
Document 1 - file: d510778dnq.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>2
<FILENAME>d510778dex99cert.htm
<DESCRIPTION>CERTIFICATIONS
<TEXT>
Document 2 - file: d510778dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g510778img5514054f1.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g510778img5514054f1.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g510778imgf7975ec02.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g510778imgf7975ec02.gif

</DOCUMENT>
</SEC-DOCUMENT>