Pacwest Bancorp (PACW) 10-K 2005 FY Annual report

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors
First Community Bancorp:

We consent to the incorporation by reference in the registration statements (No. 333-124948) on Form S-3, (No. 333-132018) on Form S-4, and (Nos. 333-43330, 333-101025 and 333-107636) on Form S-8 of First Community Bancorp of our reports dated March 10, 2006, with respect to the consolidated balance sheets of First Community Bancorp and subsidiaries as of December 31, 2005 and 2004, and the related consolidated statements of earnings, shareholders’ equity and comprehensive income and cash flows for each of the years in the three-year period ended December 31, 2005, management’s assessment of the effectiveness of internal control over financial reporting as of December 31, 2005 and the effectiveness of internal control over financial reporting as of December 31, 2005, which reports appear in the December 31, 2005, Annual Report on Form 10-K of First Community Bancorp.

	/s/ KPMG LLP
Los Angeles, California
March 10, 2006