<SEC-DOCUMENT>0001193125-17-367996-index.html : 20171213
<SEC-HEADER>0001193125-17-367996.hdr.sgml : 20171213
<ACCEPTANCE-DATETIME>20171213110533
ACCESSION NUMBER:		0001193125-17-367996
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		7
CONFORMED PERIOD OF REPORT:	20171211
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20171213
DATE AS OF CHANGE:		20171213

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITIL CORP
		CENTRAL INDEX KEY:			0000755001
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				020381573
		STATE OF INCORPORATION:			NH
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08858
		FILM NUMBER:		171253232

	BUSINESS ADDRESS:	
		STREET 1:		6 LIBERTY LANE WEST
		CITY:			HAMPTON
		STATE:			NH
		ZIP:			03842
		BUSINESS PHONE:		6037736504

	MAIL ADDRESS:	
		STREET 1:		6 LIBERTY LANE WEST
		CITY:			HAMPTON
		STATE:			NH
		ZIP:			03842
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d505156d8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: d505156d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>d505156dex11.htm
<DESCRIPTION>EX-1.1
<TEXT>
Document 2 - file: d505156dex11.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>d505156dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: d505156dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>d505156dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 4 - file: d505156dex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>5
<FILENAME>d505156dex992.htm
<DESCRIPTION>EX-99.2
<TEXT>
Document 5 - file: d505156dex992.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>g505156g13k93.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: g505156g13k93.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g505156g78k12.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: g505156g78k12.jpg

</DOCUMENT>
</SEC-DOCUMENT>