| Business | Phone |
| American Association-Clinical 1111 N Plaza Dr 550, Schaumburg 60173 | (847) 517-1050 |
| Plumbing Manufactures Inst 1340 Remington Rd A, Schaumburg 60173 | (847) 884-9764 |
| South Central Section-Aua 1111 N Plaza Dr 550, Schaumburg 60173 | (847) 605-0850 |
| Woodfield Merchants Assn 5 Woodfield Mall, Schaumburg 60173 | (847) 330-0035 |
| Lakewood Condominium Assn 700 Waterford Rd S, Schaumburg 60193 | (847) 895-3153 |
| Mason Contractors Assn 33 S Roselle Rd, Schaumburg 60193 | (847) 301-0001 |
| O'Malley & Assoc Inc 1214 Bridgeport Dr, Schaumburg 60193 | (847) 301-1422 |
| Weathersfield Commons Quadro 108 Carver Ln, Schaumburg 60193 | (847) 895-4084 |
| Weathersfield South Assoc 1111 Cranbrook Dr, Schaumburg 60193 | (847) 891-3170 |
| Sheffield Towne Home-Owners 1000 N Walnut Ln, Schaumburg 60194 | (847) 885-3444 |
| Springmill Townhomes Assoc 950 Grand Canyon Pkwy, Schaumburg 60194 | (847) 884-7260 |
| Weathersfield Lakes 130 N Salem Dr, Schaumburg 60194 | (847) 885-8454 |
| Hoffman Estates Chamber-Cmmrc 2200 W Higgins Rd 201, Schaumburg 60195 | (847) 781-9100 |
| Il Society Of Pathology 1901 N Roselle Rd, Schaumburg 60195 | (847) 592-7125 |
| Illinois Regional Insulation 1515 E Woodfield Rd, Schaumburg 60173 | (847) 619-9528 |
| Lexington Development Corp 866 Hadley Run Ln, Schaumburg 60173 | (847) 240-1373 |
| Weatherfield North Umbrella 801 Manomet Ln, Schaumburg 60173 | (847) 310-0730 |
| Woodfield Area Children's Assn 1450 American Ln, Schaumburg 60173 | (847) 330-6313 |
| Pack & Ship Copies & More 1117 S Roselle Rd, Schaumburg 60193 | (847) 891-1600 |
| A E Sales Midwest 1225 Mayfield Ln, Schaumburg 60194 | (847) 310-0335 |
| Oakfield Associates 2500 W Higgins Rd 1144, Schaumburg 60194 | (847) 490-1500 |
| Schaumburg Business Assn 28 W Schaumburg Rd, Schaumburg 60194 | (847) 885-8800 |
| Eas Sales 2155 Stonington Ave 209, Schaumburg 60195 | (847) 843-9700 |