    <SEC-DOCUMENT>0001193125-22-083646-index.html : 20220324
    <SEC-HEADER>0001193125-22-083646.hdr.sgml : 20220324
    <ACCEPTANCE-DATETIME>20220324123403
    ACCESSION NUMBER:		0001193125-22-083646
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20220428
    FILED AS OF DATE:		20220324
    DATE AS OF CHANGE:		20220324

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			FIRST US BANCSHARES, INC.
    		CENTRAL INDEX KEY:			0000717806
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				630843362
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-14549
    		FILM NUMBER:		22765748

    	BUSINESS ADDRESS:
    		STREET 1:		3291 U.S. HIGHWAY 280
    		CITY:			BIRMINGHAM
    		STATE:			AL
    		ZIP:			35243
    		BUSINESS PHONE:		2055821084

    	MAIL ADDRESS:
    		STREET 1:		3291 U.S. HIGHWAY 280
    		CITY:			BIRMINGHAM
    		STATE:			AL
    		ZIP:			35243

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	FIRST US BANCSHARES INC
    		DATE OF NAME CHANGE:	20161011

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	UNITED SECURITY BANCSHARES INC
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>d217962ddef14a.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: d217962ddef14a.htm

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    <SEQUENCE>2
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g217962dsp014.jpg

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    <DOCUMENT>
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    <SEQUENCE>3
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g217962dsp015.jpg

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    <SEQUENCE>4
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: g217962dsp016.jpg

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    <SEQUENCE>5
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 5 - file: g217962dsp017.jpg

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    <SEQUENCE>6
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 6 - file: g217962dsp018.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>g217962dsp019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: g217962dsp019.jpg

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    <SEQUENCE>8
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: g217962g00g34.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: g217962g09o95.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>g217962g11f52.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: g217962g11f52.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>g217962g65q98.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: g217962g65q98.jpg

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    </SEC-DOCUMENT>