| Illinois Process Servers, LLC | (217) 241-1335 | Sangamon | 62712 | See Details | IL |
 | United Processing, Inc. | (312) 629-0140 | States of ILLINOIS, WISCONSIN, INDIANA | 60654 | See Details | IL |
| Krimson Security & Fingerprinting, Inc. | (630) 822-2237 | Lake, Kane, Kendall, Will, McHenry, Cook, Grundy | 60559 | See Details | IL |
 | Mithra PLLC | (312) 600-8777 | Cook | 60616 | See Details | IL |
| Greentree Legal, LLC | (888) 573-4168 | States of ILLINOIS, OHIO, INDIANA, KENTUCKY, FLORIDA, TEXAS | 45206 | See Details | IL |
| D&S Private Detective, Inc. | (309) 647-8560 | Schuyler, McDonough, Henderson, Warren, Knox, Henry, Mercer, Rock Island, Fulton,
Tazewell, Peoria, Woodfor | 61607 | See Details | IL |
 | Rancilio Illinois, Inc. | (847) 380-8966 | Cook, DuPage, Kankakee, Kane, Lake, McHenry, Will | 60173 | See Details | IL |
| Fraase, Melisa A. | | Sangamon | 6001 | See Details | IL |
 | Elite Process Serving & Investigations, Inc. | (630) 299-4600 | State of ILLINOIS | 60586 | See Details | IL |
 | Process Service with a smile | 5737460574 | Cape Girardeau County, Scott County, New Madrid County, Perry County, bollinger County | 63763780 | See Details | IL, MO |
| It's Your Serve Inc. | (312) 855-0303 | State of ILLINOIS | 60602 | See Details | IL |
| Serve It Legal, LLC | (312) 725-6323 | Cook, DuPage, Kendall, Will, Kane, Lake, McHenry, Boone, Winnebago, | 60618 | See Details | IL |
| The Carter Corporation, Inc. | (202) 349-1696 | Washington, DC; States of MARYLAND, VIRGINIA | 20006 | See Details | IL |
| Great Lakes Professional Investigations, LLC | (630) 394-2110 | DuPage, Kane, Kendall | 60540 | See Details | IL |
| Tactical Services | (309) 662-0550 | Mclean, DeWitt, Macon, Logan, Sangamon, Tazewell, Woodford, Peoria, Livingston,
Champaign, Pia | 61729 | See Details | IL |
 | A-1 Detective Agency, LLC | (224) 656-5399 | State of ILLINOIS | 60085 | See Details | IL |
| Carlson Investigations, Inc. | (847) 491-9182 | | 60201 | See Details | IL |
| Smokey Mountain Process | (773) 798-9361 | Cook, DuPage, Will, Kane, Kendal, Livingston, Lake, McHenry, DeKalb,
Grundy, Kankakee, LaSall | 60609 | See Details | IL |
| C.I.S. Comprehensive Investigative Services | (800) 618-2155 | Cook, DuPage, Will, Lake, McHenry | 60634 | See Details | IL |
| Big River Investigations | (217) 228-9114 | IL: Adams, Brown, Pike, Schuyler, Hancock, McDonough, Henderson, Warren, Knox,
Fulton; MO: Clark, Marion, Lewis, Ralls, Pike; IA: Lee, Des Moines, Van Buren, Henry, | 62301 | See Details | IL |
| Schneider, Mark R. | (815) 482-3085 | IL: Winnebago, Boone, McHenry; WI: Walworth, Rock | 61008 | See Details | IL |
 | The All-Investigations Group, PLLC | (847) 336-6101 | ILLINOIS: Cook, Lake, McHenry, Will, DuPage, Kane WISCONSIN: Kenosha, Racine, Walworth, Milwaukee,
| 60062 | See Details | IL |
| Foster Investigations, Ltd. | (309) 862-3473 | McLean, Central ILLINOIS | 61761 | See Details | IL |
| American Attorney Services | (206) 718-1680 | Lake, Cook, McHenry, DuPage, Will, Kane; Nationwide Forwardin | 60015 | See Details | IL |
 | Windy City Process Serving Inc. | (312) 296-9506 | Cook, Dupage, Kane, Kendall, Lake, McHenry, Will | 60655 | See Details | IL |
| Diaz Office Corp | (331) 588-8959 | Cook, DuPage, Lake, Will | 60123 | See Details | IL |
| Search Investigations, Inc. | (630) 890-1340 | Kane, DuPage, Cook, DeKalb, Ogle, Kendall, Will, Kankakee, Lake,
McHenry, Grundy, Boone, LaSalle, Winnebago, Lee, Sangamo | 60137 | See Details | IL |
| Bill Clutter Investigations, Inc. | (877) 528-5997 | Sangamon, Macon, Christian, Menard, Scott, Greene, Cass, Calhoun, Jersey,
Macoupin, Montgomery, Madison, Moultrie, Douglas, Edgar, Shelby, Coles,
Cumberland, Clark, Fayette, Effingham, Jasper, Crawford, Marion, Clay,
Richland, Lawrence, Wabash, Edwa | 62701 | See Details | IL |
| Relionant Investigations & Security Services | (224) 304-0030 | Lake | 60085 | See Details | IL |
| Advanced Investigative Services, Inc. | (217) 821-4868 | Effingham, Bond, Champaign, Clay, Clinton, Coles, Crawford, Cumberland, Douglas,
Edwards, Fayette, Franklin, Hamilton, Jasper, Jefferson, Lawrence, Marion,
Moultrie, Perry, Richland, Shelby, Wabash, Washington, Wyane, Whte,
Williamso | 62401 | See Details | IL |
 | Gazelle Process & Investigations, LLC | (847) 752-4450 | IL: McHenry, Boone, DeKalb, DuPage, Kane, Kendall, Lake, LaSalle, McLean,
Sangamon, Will, Winnebago; WI: Kenosha, Walworth | 60012 | See Details | IL |
 | VSI Process Service & Investigation, Inc. | (312) 493-4671 | State of ILLINIOS | 60501 | See Details | IL |
 | Action Legal Process | (888) 511-1919 | All of Springfield and St. Louis | 62704 | See Details | IL |
 | The Wesley Group, Inc. | (202) 372-7466 | States of MARYLAND, VIRGINIA, DELAWARE, WASHINGTON D.C. | 20036 | See Details | IL |
| SIR Investigations and Security, Inc | (618) 553-2505 | South Central Illinois; Southwestern Indiana | 62837 | See Details | IL |
| Lazzara Detective Services, Inc. | (815) 353-3050 | McHenry, Kane, Boone, Western Lake | 60039 | See Details | IL |
| Legal Document Management Services, Inc. | (312) 726-0036 | States of ILLINOIS & INDIANA | 60602 | See Details | IL |
 | NW Chicago Investigations, LLC | (847) 489-9111 | Cook, DuPage, Lake | 60068 | See Details | IL |
 | Impact Investigations, Inc. | (847) 804-6946 | Chicago Metro Area; Cook, DuPage, Lake, Kane, McHenry, Will | 60559 | See Details | IL |
 | Richart Detective Agency | (773) 645-7996 | Cook | 60638 | See Details | IL |
 | Verify Investigations | (312) 204-7184 | Cook, Will, DuPage, Kane, Lake, | 60608 | See Details | IL |
 | Barrister Investigations & Filing Service, Inc. | (815) 205-8300 | State of ILLINOIS | 60432 | See Details | IL |
 | Nationwide Investigations | (312) 361-3598 | Cook, Lake, DuPage, State of ILLINOIS | 60604 | See Details | IL |
 | Stewart & Associates Inc. | (800) 442-3807 | Stephenson, Winnebago, Ogle, Carroll, Jo Daviess, Lee, Whiteside, Boone, DeKalb; WI: Lafayette,
Green, Rock, Grant; IOWA: Dubuqu | 61101-1 | See Details | IL |
| La Salle Process Servers LP | (312) 263-0620 | Cook, Dupage, Grundy, Kane, Kendall, Lake, McHenry, Will; INDIANA: Lake; We provide service within 150 miles of Chicago.
| 60602 | See Details | IL |
 | Judicial Attorney Services, Inc. | (877) 659-3448 | State of ILLINOIS: DuPage, Kane, Cook, Lake, McHenry, Will, DeKalb; Northwest INDIAN | 60606 | See Details | IL |
| Chicagoland Investigative Services | (800) 556-8289 | Will, Cook, Kankakee, DuPage | 60462 | See Details | IL |
| Pro Serve | (217) 341-2114 | Christian, Logan, Macon, Morgan, Sangamon | 62791 | See Details | IL |
| Diligent Detective Agency, Ltd. | (815) 694-3332 | Vermilion, Champaign, Kankakee, McLean, Iroquois, Ford, Livingsto | 60927 | See Details | IL |
| Hurst Investigation Services Inc | (618) 310-1500 | IL: St. Clair, Clinton, Bond, Marion, Madison, Monroe, Jefferson, Randolph; MO: St. Loui | 62221 | See Details | IL |
 | Rancilio Illinois, Inc. | (847) 380-8966 | Cook, DuPage, Kankakee, Kane, Lake, McHenry, Wil | 60173 | See Details | IL |
| One Source Process, Inc | (800) 668-5448, | MD: Montgomery, Prince George's; VA: Arlington, Fairfax; WASHINGTON, D
| 20005 | See Details | IL |
| Edward D. Sonne, Jr. & Associates | (708) 342-2430 | Cook, Will, Dupage, Kane, McHenry, Lake, Kankakee | 60477 | See Details | IL |
| A.A.A. Process Service, Inc. | 314-351-7979 | St. Louis City , St. Louis County , Jefferson County , St. Charles County | 63070 | See Details | IL, MO |
| Brian W. Cherpeske Private Detective | (815) 223-7360 | La Salle, Bureau, Putnam | 61301-11 | See Details | IL |
| Comprehensive Investigative Services PLLC | (331) 431-1244 | Cook, DuPage, Kane, Will, Lake, McHenry, Kankakee, Whiteside, Lee,
Ogle, DeKalb, Winnebago, Kendall, LaSalle, Burea | 60169 | See Details | IL |
| Durbin Investigations | (618) 267-0472 | Marion, Clay, Jefferson, Clinton, Wayne; Central & Southern ILLINOI | 62881 | See Details | IL |
| Legal Serve, LLC | (630) 816-0898 | Du Page, Kane, Will, Kendall, Lake, McHenry, Grundy, Cook, Boone,
De Kalb, La Salle, Kankake | 60189-52 | See Details | IL |
 | Meador Investigations | (888) 688-9944, | Cass, Champaign, Christian, DeWitt, Fulton, Logan, Macon, Mason, Menard,
Peoria, Piatt, Sangamon, Tazewell, Woodfor | 62656 | See Details | IL |
 | Tri County Investigations Group Inc | (630) 655-1313 | Cook, DuPage, Kane, Will, Lake, Kendall, Grundy, Kankakee, McHenry,
Boone, Winnebago, Stephenson, Jo Davies, Ogle, Carroll, Lee, LaSalle, | 60527 | See Details | IL |
| Blue 22, LLC | (847) 888-4464 | Cook, DuPage, Kane, Lake, McHenry, Will, Winnebago, De Kalb, Kendall,
| 60123 | See Details | IL |
| Kellerman Investigations, Ltd. | (888) 402-6662, | Madison, St. Clair; Southern ILLINOIS | 62034 | See Details | IL |
| Pride Eye Corp | (708) 754-7753 | Cook, Will | 60461 | See Details | IL |
| Dominion Investigations LLC | (618) 944-8189 | Williamson, Franklin, Jefferson, St. Clair, Washington, Monroe, Clinton, Marion, Perry,
Randolph, Jackson, Saline, Gallatin, Union, Johnson, Massac, Clinton,
Hardin, Moultrie, Macon, Sagamon, Christian, Fayette, Effingham, Monroe,
Montgomery, Pop | 62869 | See Details | IL |
| Rockford Detective & Security Agency | (815) 282-2822 | Winnebago, Boone, McHenry, Ogle, DeKalb, Stephenson | 61107 | See Details | IL |
 | Front Range Legal Process Service, LLC | (888) 387-3783 | State of ILLINOIS | 60606 | See Details | IL |
| GTY Investigations | (888) 405-9794 | Williamson, franklin, Jackson, Saline, Union, Jefferson | 62951 | See Details | IL |
 | Torri's Legal Services | (800) 990-7378 | Washington, DC; MD: Montgomery, Prince George's, Charles, Frederick, Anne Arundel, St. Mary's, Baltimore, Howard,
Calvert; VA: Arlington, Fairfax, Alexandria, Prince Williams, Loudoun, Stafford, Fredericksbur | 20879 | See Details | IL |
| JMB Investigations | (618) 531-5030 | St. Clair, Madison | 62208 | See Details | IL |
 | Prism CourtServe | (708) 263-6077 | Sangamon | 62702 | See Details | IL |
 | Nationwide Investigations | (312) 361-3598 | Cook, Lake, DuPage, State of ILLINOIS | 60604 | See Details | IL |
| Chicagoland Detective Services | (773) 772-2651 | Cook, Kane, DuPage, Lake, Will, McHenry
| 60641 | See Details | IL |