-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Mp0THCiDFdTH2iQKQvTMd4U5U8+92mNa4YtI82q35K5XOGMO/+c/vUM5YQgzeo2n
 cMgQEndH5LYqeMB9MTMilA==

<SEC-DOCUMENT>0001193125-09-040850.txt : 20090227
<SEC-HEADER>0001193125-09-040850.hdr.sgml : 20090227
<ACCEPTANCE-DATETIME>20090227153035
ACCESSION NUMBER:		0001193125-09-040850
CONFORMED SUBMISSION TYPE:	10-K
PUBLIC DOCUMENT COUNT:		11
CONFORMED PERIOD OF REPORT:	20081231
FILED AS OF DATE:		20090227
DATE AS OF CHANGE:		20090227

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			S&T BANCORP INC
		CENTRAL INDEX KEY:			0000719220
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				251434426
		STATE OF INCORPORATION:			PA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-12508
		FILM NUMBER:		09642548

	BUSINESS ADDRESS:	
		STREET 1:		800 PHILADELPHIA STREET
		STREET 2:		PO BOX 190
		CITY:			INDIANA
		STATE:			PA
		ZIP:			15701
		BUSINESS PHONE:		7244651466

	MAIL ADDRESS:	
		STREET 1:		800 PHILADELPHIA STREET
		STREET 2:		PO BOX 190
		CITY:			INDIANA
		STATE:			PA
		ZIP:			15701
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K
<SEQUENCE>1
<FILENAME>d10k.htm
<DESCRIPTION>FORM 10-K
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-21
<SEQUENCE>2
<FILENAME>dex21.htm
<DESCRIPTION>SUBSIDIARIES OF THE REGISTRANT
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>dex231.htm
<DESCRIPTION>CONSENT OF KPMG LLP
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>4
<FILENAME>dex232.htm
<DESCRIPTION>CONSENT OF ERNST & YOUNG LLP
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>5
<FILENAME>dex24.htm
<DESCRIPTION>POWER OF ATTORNEY
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>6
<FILENAME>dex311.htm
<DESCRIPTION>SECTION 302 CEO CERTIFICATION
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>7
<FILENAME>dex312.htm
<DESCRIPTION>SECTION 302 CFO CERTIFICATION
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>8
<FILENAME>dex32.htm
<DESCRIPTION>SECTION 906 CEO AND CFO CERTIFICATION
</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g91161g03v72.jpg
<DESCRIPTION>GRAPHIC
</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g91161g12w57.jpg
<DESCRIPTION>GRAPHIC
</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g91161g55w74.jpg
<DESCRIPTION>GRAPHIC
</DOCUMENT>
</SUBMISSION>