<SEC-DOCUMENT>0001137547-20-000017-index.html : 20200619
<SEC-HEADER>0001137547-20-000017.hdr.sgml : 20200619
<ACCEPTANCE-DATETIME>20200619165246
ACCESSION NUMBER:		0001137547-20-000017
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20191231
FILED AS OF DATE:		20200619
DATE AS OF CHANGE:		20200619

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:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-32897
		FILM NUMBER:		20976271

	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>11-K
<SEQUENCE>1
<FILENAME>a11k-ubfoksopfinancials123.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: a11k-ubfoksopfinancials123.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>exhibit231123119.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 2 - file: exhibit231123119.htm

</DOCUMENT>
</SEC-DOCUMENT>