Illinois Investigation Services

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This web page lists investigation services and private investigators in Illinois. Before visiting any of these Illinois investigation services and private investigators, be sure to verify their address, hours of operation, and appointment requirements (if any). An investigation service provider may have ceased operations or relocated, and business hours can sometimes vary, especially on and around holidays. So a quick phone call can often save you time and aggravation.

vintage investigator smoking a pipe and holding a magnifying glass - with Illinois icon

Related directory pages are highlighted below the Illinois investigation service provider listings on this page. Links to Investigation Service directory pages for adjacent States are provided at the bottom of the page. Illinois directory and map page links are also included there.


Argus Services Chicago, Illinois 60602 1-312-377-9441 argus-services.com Located in Cook County	Investigation Services

Arkus Inc Northbrook, Illinois 60062 1-847-205-2262 arkusinvestigators.com Located in Cook County	Investigation Services

BioMetric Impressions Corp Elmhurst, Illinois 60126 1-630-715-2760 www.biometricimpressions.com/ Located in DuPage County	Employment Background Checks Private Investigators

Bushue Human Resources Effingham, Illinois 62401 1-217-342-3042 www.bushuehr.com Located in Effingham County	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Chicagoland Detective Service Inc Chicago, Illinois 60647 1-773-772-2651 falconpi.com Located in Cook County	Armored Car Services Investigation Services Private Detectives

Chicagoland Investigative Services Orland Park, Illinois 60462 1-708-478-6458 www.chicagolandpi.com Located in Cook County	Investigation Services Private Investigators

Construction Safety Service Inc Wilmington, Illinois 60481 1-815-476-0172 www.constructionsafetyservices.com Located in Will County ☎ & 🔍	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Control Solutions Inc Aurora, Illinois 60502 1-630-806-7062 controls.com Located in DuPage County ☎ & 🔍	Accountants Industrial Equipment and Supplies Dealers Investigation Services Medical Equipment and Supplies Retail Public Accountants Security Consultants and Agencies Security Management Consultants Security Systems and Services

Digby's Detective & Security Chicago, Illinois 60616 1-312-326-1100 www.digbysecurity.com Located in Cook County	Investigation Services Security Systems and Services

E L Johnson Investigations Chicago, Illinois 60604 1-312-583-1167 eljohnson.com Located in Cook County	Investigation Services Security Systems and Services

Elite Process Serving Plainfield, Illinois 60585 1-630-299-4600 www.elitepsi.com Located in Will County	Investigation Services Security Systems and Services

Engineered Security & Sound - Jack Oulicky PE West Chicago, Illinois 60185 1-630-876-8853 engineered-security.com Located in DuPage County	Engineers Investigation Services Professional Engineers Security Consultants and Agencies Security Systems and Services

Fact Finders Group Inc Matteson, Illinois 60443 1-708-283-4200 factfindersgroup.com Located in Cook County	Investigation Services Security Systems and Services

Foster Investigations Normal, Illinois 61761 1-309-862-3473 www.fosterinvestigations.com Located in McLean County	Detective Agencies Investigation Services Security Systems and Services

GTY Investigations Johnston City, Illinois 62951 1-618-983-6560 www.gtyinvestigations.com Located in Williamson County	Investigation Services

Hanrahan Investigations Inc Westchester, Illinois 60154 1-708-343-1888 www.hanrahaninvestigations.com Located in Cook County	Investigation Services Private Detectives Private Investigators Security Systems and Services

Hillard Heintze Sos Security Chicago, Illinois 60606 1-312-869-8500 www.hillardheintze.com Located in Cook County	Investigation Services Security Consultants and Agencies Security Systems and Services

Info Max Investigations Inc Schaumburg, Illinois 60193 1-847-301-1475 infomaxinvestigations.com Located in Cook County	Investigation Services Security Systems and Services

Infomax Schaumburg, Illinois 60168 1-847-301-1475 www.infomaxinvestigations.com Located in Cook County	Investigation Services Private Detectives Security Systems and Services

Intellex Security Chicago, Illinois 60638 1-773-735-6666 www.intellexsecurity.com Located in Cook County	Government Contractors Military Recruiting Private Investigators

John Paul Carroll & Associates Naperville, Illinois 60563 1-630-717-5000 www.johnpaulcarroll.com Located in DuPage County	Attorneys Investigation Services Security Systems and Services

Kellerman Investigations Limited Glen Carbon, Illinois 62034 1-618-288-6662 kellermaninvestigations.com Located in Madison County	Investigation Services

Kevin W McClain Investigations Centralia, Illinois 62801 1-618-532-1152 www.kevinwmcclain.com Located in Marion County	Investigation Services Legal Services Private Detectives Private Investigators Security Systems and Services

Kirby Edw R & Associate Inc Elmhurst, Illinois 60126 1-630-941-1703 www.kirbyinvestigations.com Located in DuPage County	Investigation Services

Meador Investigations Lincoln, Illinois 62656 1-217-732-1585 www.pi-pro.com Located in Logan County	Investigation Services Wheelchair Lifts and Scooters

MRC Investigations USA Inc Wheaton, Illinois 60187 1-630-784-8441 mrciusa.com Located in DuPage County	Investigation Services Security Systems and Services

National Investigations Channahon, Illinois 60410 1-815-467-0074 www.nationalinvestigations.com Located in Will County	Investigation Services

Northshore Process Service Evanston, Illinois 60201 1-847-373-8972 northshoreprocess.justia.net Located in Cook County	Private Investigators

On Q Protection & Investigation Chicago, Illinois 60657 1-773-697-4249 www.onqpi.com Located in Cook County	Investigation Services

Radio Ranch Inc Rock Falls, Illinois 61071 1-815-622-9000 www.radioranchinc.com Located in Whiteside County	Business Cell Phone Equipment and Supplies Cell Phone Equipment and Supplies Cell Phones Investigation Services Phone Equipment and Systems Dealers Radio Sales and Service Security Consultants and Agencies Security Systems and Services Wireless Communications

Risk Management Network Inc Wheaton, Illinois 60189 1-630-681-0876 www.riskmanagementnetwork.com Located in DuPage County ☎ & 🔍	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Robert G Hanrahan Investigation Chicago, Illinois 60611 1-312-981-8770 www.rghinvestigations.com Located in Cook County	Detective Agencies Employment Screening Services Investigation Services Private Detectives Private Investigators

Rockford Detective Agency Loves Park, Illinois 61111 1-815-282-2822 www.rockforddetective.com Located in Winnebago County	Investigation Services

SafeScreener.com Chicago, Illinois 60605 1-888-578-8600 www.safescreener.com Located in Cook County	Employment Background Checks Investigation Services

Safety Meetings Outlines Inc Frankfort, Illinois 60423 1-815-464-0200 safetymeetingoutlines.com Located in Will County	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Sheffield Safety Loss Control Chicago, Illinois 60614 1-773-525-5532 sheffieldsafety.com Located in Cook County ☎ & 🔍	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Stanard & Associates Chicago, Illinois 60606 1-312-553-0213 www.stanard.com Located in Cook County ☎ & 🔍	Business Consultants and Advisors Business Management Services Business Services Investigation Services Management Consultants Quality Control Consultants Security Consultants and Agencies Security Systems and Services

Stealth Investigative Agency Downers Grove, Illinois 60515 1-630-810-8909 www.sia-investigations.com Located in DuPage County	Investigation Services

Stern Process & Investigation Chicago, Illinois 60606 1-312-853-2150 scottstern.com Located in Cook County	Investigation Services Security Systems and Services

Tactical Investigations Carbondale, Illinois 62903 1-618-534-4457 www.tacticalinvestigations.com Located in Jackson County	Computer Security Systems and Services Employment Background Checks Investigation Services Private Detectives

Tracy Rizzo Law Office Chicago, Illinois 60602 1-312-332-7788 www.tracyrizzo.com Located in Cook County ☎ & 🔍	Armored Car Services Attorneys Investigation Services Private Detectives

U-Spy Store Skokie, Illinois 60077 1-847-677-2779 www.uspystore.com Located in Cook County	Investigation Services Security and Industrial Video Equipment

United Processing Inc Chicago, Illinois 60601 1-312-629-0140 www.unitedproc.com Located in Cook County	Investigation Services Legal Services Private Detectives Private Investigators Security Systems and Services

United Risk Partners Elk Grove Village, Illinois 60007 1-847-593-9995 www.united-risk.com Located in Cook County	Investigation Services

Video Laboratory Inc Rockford, Illinois 61108 1-815-398-0560 www.soundsclassic.com Located in Winnebago County	Alarm System Dealers Closed Circuit Television Equipment and Security Systems Computers and Equipment Repair and Maintenance Investigation Services Security Consultants and Agencies Security Systems and Services

Wicklander Zulawski & Associate Downers Grove, Illinois 60515 1-630-852-6800 www.w-z.com Located in DuPage County	Government Contractors Investigation Services

Investigation Services in Adjacent States

Illinois Directory and Map Pages

Illinois Directory - Illinois regional directory.
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Related Illinois Page(s)

Illinois Security Consultants & Agencies	Illinois Security Systems & Services	Illinois Alarm System Dealers

46 investigation services and private investigators listed in Illinois.
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Illinois Investigation Services

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