    <SEC-DOCUMENT>0001564590-21-018058-index.html : 20210408
    <SEC-HEADER>0001564590-21-018058.hdr.sgml : 20210408
    <ACCEPTANCE-DATETIME>20210407184240
    ACCESSION NUMBER:		0001564590-21-018058
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		3
    CONFORMED PERIOD OF REPORT:	20210527
    FILED AS OF DATE:		20210408
    DATE AS OF CHANGE:		20210407

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BANCFIRST CORP /OK/
    		CENTRAL INDEX KEY:			0000760498
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		IRS NUMBER:				731221379
    		STATE OF INCORPORATION:			OK
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-14384
    		FILM NUMBER:		21813363

    	BUSINESS ADDRESS:
    		STREET 1:		101 N BROADWAY STE 200
    		CITY:			OKLAHOMA CITY
    		STATE:			OK
    		ZIP:			73102-8401
    		BUSINESS PHONE:		4052701000

    	MAIL ADDRESS:
    		STREET 1:		101 NORTH BROADWAY
    		STREET 2:		STE 200
    		CITY:			OKLAHOMA CITY
    		STATE:			OK
    		ZIP:			73102-8401

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	UNITED COMMUNITY CORP
    		DATE OF NAME CHANGE:	19890401
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>banf-def14a_20201231.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: banf-def14a_20201231.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>gryhphfshcnh000001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: gryhphfshcnh000001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>gryhphfshcnh000002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: gryhphfshcnh000002.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>