<SEC-DOCUMENT>0001193125-19-013847-index.html : 20190122
<SEC-HEADER>0001193125-19-013847.hdr.sgml : 20190122
<ACCEPTANCE-DATETIME>20190122135704
ACCESSION NUMBER:		0001193125-19-013847
CONFORMED SUBMISSION TYPE:	N-CSR
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20181130
FILED AS OF DATE:		20190122
DATE AS OF CHANGE:		20190122
EFFECTIVENESS DATE:		20190122

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-CSR
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-09537
		FILM NUMBER:		19535122

	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-CSR
<SEQUENCE>1
<FILENAME>d660458dncsr.htm
<DESCRIPTION>MFS CALIFORNIA MUNICIPAL FUND N-CSR
<TEXT>
Document 1 - file: d660458dncsr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.(12)(A)(1)
<SEQUENCE>2
<FILENAME>d660458dex9912a1.htm
<DESCRIPTION>CODE OF ETHICS
<TEXT>
Document 2 - file: d660458dex9912a1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.CERT
<SEQUENCE>3
<FILENAME>d660458dex99cert.htm
<DESCRIPTION>SECTION 302 CERTIFICATIONS
<TEXT>
Document 3 - file: d660458dex99cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.906CERT
<SEQUENCE>4
<FILENAME>d660458dex99906cert.htm
<DESCRIPTION>SECTION 906 CERTIFICATIONS
<TEXT>
Document 4 - file: d660458dex99906cert.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.PROXYPOL
<SEQUENCE>5
<FILENAME>d660458dex99proxypol.htm
<DESCRIPTION>MFS PROXY VOTING POLICES AND PROCEDURES
<TEXT>
Document 5 - file: d660458dex99proxypol.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g660458ernst_youngllp.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g660458ernst_youngllp.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g660458g0117105238042.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g660458g0117105238042.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g660458g17m13.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g660458g17m13.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g660458g67p04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: g660458g67p04.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g660458g69v38.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: g660458g69v38.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g660458g72s28.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: g660458g72s28.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g660458manning_photo.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: g660458manning_photo.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g660458manning_sig.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: g660458manning_sig.jpg

</DOCUMENT>
</SEC-DOCUMENT>