    <SEC-DOCUMENT>0001193125-19-088115-index.html : 20190327
    <SEC-HEADER>0001193125-19-088115.hdr.sgml : 20190327
    <ACCEPTANCE-DATETIME>20190327140041
    ACCESSION NUMBER:		0001193125-19-088115
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		34
    CONFORMED PERIOD OF REPORT:	20190424
    FILED AS OF DATE:		20190327
    DATE AS OF CHANGE:		20190327
    EFFECTIVENESS DATE:		20190327

    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:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-08858
    		FILM NUMBER:		19707875

    	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>DEF 14A
    <SEQUENCE>1
    <FILENAME>d672976ddef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: d672976ddef14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g672976asnap2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g672976asnap2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g672976dsp1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g672976dsp1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>g672976g01k16.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g672976g01k16.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>g672976g02p19.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g672976g02p19.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>g672976g03v27.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g672976g03v27.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g672976g04o53.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g672976g04o53.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>g672976g05m89.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g672976g05m89.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>g672976g07y73.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g672976g07y73.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g672976g08k29.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g672976g08k29.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g672976g12w55.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g672976g12w55.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>g672976g19i43.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: g672976g19i43.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>g672976g29w07.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: g672976g29w07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>g672976g30a89.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: g672976g30a89.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>g672976g33s90.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: g672976g33s90.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>g672976g33x98.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: g672976g33x98.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>g672976g33y11.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: g672976g33y11.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>g672976g35s14.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: g672976g35s14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>g672976g42t20.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: g672976g42t20.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>g672976g43z69.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: g672976g43z69.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>g672976g63m57.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: g672976g63m57.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>g672976g66t24.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: g672976g66t24.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>g672976g68q51.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: g672976g68q51.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>g672976g69t18.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: g672976g69t18.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>g672976g72q07.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: g672976g72q07.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>g672976g80x26.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: g672976g80x26.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>g672976g85w14.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: g672976g85w14.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>g672976g91c10.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: g672976g91c10.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>g672976g92x93.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: g672976g92x93.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>g672976g99e56.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: g672976g99e56.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>g672976g99g17.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: g672976g99g17.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>g672976gsnap4.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: g672976gsnap4.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>g672976nsnap3.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: g672976nsnap3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>g672976snap2.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: g672976snap2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>