    <SEC-DOCUMENT>0001437749-19-023792-index.html : 20191203
    <SEC-HEADER>0001437749-19-023792.hdr.sgml : 20191203
    <ACCEPTANCE-DATETIME>20191203141935
    ACCESSION NUMBER:		0001437749-19-023792
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		88
    CONFORMED PERIOD OF REPORT:	20191203
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20191203
    DATE AS OF CHANGE:		20191203

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ICF International, Inc.
    		CENTRAL INDEX KEY:			0001362004
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
    		IRS NUMBER:				223661438
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33045
    		FILM NUMBER:		191265360

    	BUSINESS ADDRESS:
    		STREET 1:		9300 LEE HIGHWAY
    		CITY:			FAIRFAX
    		STATE:			VA
    		ZIP:			22031
    		BUSINESS PHONE:		(703) 934-3000

    	MAIL ADDRESS:
    		STREET 1:		9300 LEE HIGHWAY
    		CITY:			FAIRFAX
    		STATE:			VA
    		ZIP:			22031
    </SEC-HEADER>
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    <SEQUENCE>1
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    <TEXT>
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    <FILENAME>ex_166311.htm
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    Document 2 - file: ex_166311.htm

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    <TYPE>EX-101.SCH
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    <FILENAME>icfi-20191203.xsd
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    Document 3 - file: icfi-20191203.xsd

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    Document 4 - file: icfi-20191203_def.xml

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    Document 13 - file: slide07.jpg

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    Document 16 - file: slide10.jpg

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    Document 40 - file: slide34.jpg

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    Document 42 - file: slide36.jpg

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    Document 54 - file: slide48.jpg

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    Document 56 - file: slide50.jpg

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    Document 58 - file: slide52.jpg

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    Document 59 - file: slide53.jpg

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    Document 60 - file: slide54.jpg

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    Document 61 - file: slide55.jpg

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    Document 62 - file: slide56.jpg

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    Document 63 - file: slide57.jpg

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    Document 65 - file: slide59.jpg

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    Document 66 - file: slide60.jpg

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    Document 67 - file: slide61.jpg

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    Document 68 - file: slide62.jpg

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    Document 69 - file: slide63.jpg

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    Document 70 - file: slide64.jpg

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    Document 71 - file: slide65.jpg

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    Document 72 - file: slide66.jpg

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    Document 73 - file: slide67.jpg

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    Document 74 - file: slide68.jpg

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    Document 75 - file: slide69.jpg

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    Document 76 - file: slide70.jpg

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    Document 77 - file: slide71.jpg

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    Document 78 - file: slide72.jpg

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    Document 79 - file: slide73.jpg

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