<SEC-DOCUMENT>0001193125-18-068935-index.html : 20180302
<SEC-HEADER>0001193125-18-068935.hdr.sgml : 20180302
<ACCEPTANCE-DATETIME>20180302163118
ACCESSION NUMBER:		0001193125-18-068935
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20180301
ITEM INFORMATION:		Termination of a Material Definitive Agreement
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180302
DATE AS OF CHANGE:		20180302

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:		18662473

	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>d505401d8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
Document 1 - file: d505401d8k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>d505401dex101.htm
<DESCRIPTION>EX-10.1
<TEXT>
Document 2 - file: d505401dex101.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>d505401dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 3 - file: d505401dex991.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g505401img01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g505401img01.jpg

</DOCUMENT>
</SEC-DOCUMENT>