Illinois Investigation Services
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 policies (if applicable). An investigation service provider may have ceased operations or moved to a different location, and business hours can sometimes be irregular, especially on and around holidays. So a quick phone call can often save you time and aggravation.
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.
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Argus Services Chicago, Illinois 60602 1-312-377-9441 argus-services.com
Located in Cook County
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Arkus Inc Northbrook, Illinois 60062 1-847-205-2262 arkusinvestigators.com
Located in Cook County
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Bushue Human Resources Effingham, Illinois 62401 1-217-342-3042 www.bushuehr.com
Located in Effingham County
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Chicagoland Detective Service Inc Chicago, Illinois 60647 1-773-772-2651 falconpi.com
Located in Cook County
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Chicagoland Investigative Services Orland Park, Illinois 60462 1-708-478-6458 www.chicagolandpi.com
Located in Cook County
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Construction Safety Service Inc Wilmington, Illinois 60481 1-815-476-0172 www.constructionsafetyservices.com
Located in Will County
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Control Solutions Inc Aurora, Illinois 60502 1-630-806-7062 controls.com
Located in Kane County
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Digby's Detective & Security Chicago, Illinois 60616 1-312-326-1100 www.digbysecurity.com
Located in Cook County
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E L Johnson Investigations Chicago, Illinois 60604 1-312-583-1167 eljohnson.com
Located in Cook County
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Elite Process Serving Plainfield, Illinois 60585 1-630-299-4600 www.elitepsi.com
Located in Will County
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Fact Finders Group Inc Matteson, Illinois 60443 1-708-283-4200 factfindersgroup.com
Located in Cook County
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Foster Investigations Normal, Illinois 61761 1-309-862-3473 www.fosterinvestigations.com
Located in McLean County
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GTY Investigations Johnston City, Illinois 62951 1-618-983-6560 www.gtyinvestigations.com
Located in Williamson County
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Hanrahan Investigations Inc Westchester, Illinois 60154 1-708-343-1888 www.hanrahaninvestigations.com
Located in Cook County
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Hillard Heintze Sos Security Chicago, Illinois 60606 1-312-869-8500 www.hillardheintze.com
Located in Cook County
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Info Max Investigations Inc Schaumburg, Illinois 60193 1-847-301-1475 infomaxinvestigations.com
Located in Cook County
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Infomax Schaumburg, Illinois 60168 1-847-301-1475 www.infomaxinvestigations.com
Located in Cook County
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John Paul Carroll & Associates Naperville, Illinois 60563 1-630-717-5000 www.johnpaulcarroll.com
Located in DuPage County
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Kellerman Investigations Limited Glen Carbon, Illinois 62034 1-618-288-6662 kellermaninvestigations.com
Located in Madison County
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Kevin W McClain Investigations Centralia, Illinois 62801 1-618-532-1152 www.kevinwmcclain.com
Located in Marion County
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Kirby Edw R & Associate Inc Elmhurst, Illinois 60126 1-630-941-1703 www.kirbyinvestigations.com
Located in DuPage County
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Meador Investigations Lincoln, Illinois 62656 1-217-732-1585 www.pi-pro.com
Located in Logan County
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MRC Investigations USA Inc Wheaton, Illinois 60187 1-630-784-8441 mrciusa.com
Located in DuPage County
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National Investigations Channahon, Illinois 60410 1-815-467-0074 www.nationalinvestigations.com
Located in Will County
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On Q Protection & Investigation Chicago, Illinois 60657 1-773-697-4249 www.onqpi.com
Located in Cook County
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Radio Ranch Inc Rock Falls, Illinois 61071 1-815-622-9000 www.radioranchinc.com
Located in Whiteside County
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RGH Investigations Chicago, Illinois 60611 1-312-981-8770 rghinvestigations.com
Located in Cook County
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Risk Management Network Inc Wheaton, Illinois 60189 1-630-681-0876 www.riskmanagementnetwork.com
Located in DuPage County
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Robert G Hanrahan Investigation Chicago, Illinois 60611 1-312-981-8770 www.rghinvestigations.com
Located in Cook County
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Rockford Detective Agency Loves Park, Illinois 61111 1-815-282-2822 www.rockforddetective.com
Located in Winnebago County
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SafeScreener.com Chicago, Illinois 60605 1-888-578-8600 www.safescreener.com
Located in Cook County
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Safety Meetings Outlines Inc Frankfort, Illinois 60423 1-815-464-0200 safetymeetingoutlines.com
Located in Will County
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Sheffield Safety Loss Control Chicago, Illinois 60614 1-773-525-5532 sheffieldsafety.com
Located in Cook County
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Stanard & Associates Chicago, Illinois 60606 1-312-553-0213 www.stanard.com
Located in Cook County
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Stealth Investigative Agency Downers Grove, Illinois 60515 1-630-810-8909 www.sia-investigations.com
Located in DuPage County
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Stern Process & Investigation Chicago, Illinois 60606 1-312-853-2150 scottstern.com
Located in Cook County
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Tactical Investigations Carbondale, Illinois 62903 1-618-534-4457 www.tacticalinvestigations.com
Located in Jackson County
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Tracy Rizzo Law Office Chicago, Illinois 60602 1-312-332-7788 www.tracyrizzo.com
Located in Cook County
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U-Spy Store Skokie, Illinois 60077 1-847-677-2779 www.uspystore.com
Located in Cook County
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United Processing Inc Chicago, Illinois 60601 1-312-629-0140 www.unitedproc.com
Located in Cook County
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Video Laboratory Inc Rockford, Illinois 61108 1-815-398-0560 www.soundsclassic.com
Located in Winnebago County
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Wicklander Zulawski & Associate Downers Grove, Illinois 60515 1-630-852-6800 www.w-z.com
Located in DuPage County
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Wicklander Zulawski & Associates Downers Grove, Illinois 60515 1-630-852-6800 w-z.com
Located in DuPage County
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Investigation Services in Adjacent States
Illinois Directory and Map Pages
- Illinois Directory - Illinois regional directory.
- Illinois Map - state maps of Illinois.
Related Illinois Page(s)
Illinois Security Consultants |
Illinois Security Systems |
Illinois Alarm System Dealers |
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43 investigation services and private investigators listed in Illinois.