<SEC-DOCUMENT>0001137547-20-000011-index.html : 20200429
<SEC-HEADER>0001137547-20-000011.hdr.sgml : 20200429
<ACCEPTANCE-DATETIME>20200429165834
ACCESSION NUMBER:		0001137547-20-000011
CONFORMED SUBMISSION TYPE:	10-K/A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20191231
FILED AS OF DATE:		20200429
DATE AS OF CHANGE:		20200429

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED SECURITY BANCSHARES
		CENTRAL INDEX KEY:			0001137547
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		IRS NUMBER:				912112732
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32897
		FILM NUMBER:		20831278

	BUSINESS ADDRESS:	
		STREET 1:		2126 INYO STREET
		CITY:			FRESNO
		STATE:			CA
		ZIP:			93721
		BUSINESS PHONE:		5592484930

	MAIL ADDRESS:	
		STREET 1:		2126 INYO STREET
		CITY:			FRESNO
		STATE:			CA
		ZIP:			93721
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K/A
<SEQUENCE>1
<FILENAME>ubfo10ka12312019.htm
<DESCRIPTION>10-K/A UBFO 12312019
<TEXT>
Document 1 - file: ubfo10ka12312019.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>2
<FILENAME>a10kaex311.htm
<DESCRIPTION>EXHIBIT 31.1 10K/A 12312019
<TEXT>
Document 2 - file: a10kaex311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>3
<FILENAME>a10kaex312.htm
<DESCRIPTION>EXHIBIT 31.2 10K/A 12312019
<TEXT>
Document 3 - file: a10kaex312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>4
<FILENAME>a10kaex321.htm
<DESCRIPTION>EXHIBIT 32.1 10K/A 12312019
<TEXT>
Document 4 - file: a10kaex321.htm

</DOCUMENT>
</SEC-DOCUMENT>