| Name | Phone | Category |
| D. FEENEY COUNSELING & CONSULTING LLC | (630) 481-4101 | |
| DACOTT ENERGY SERVICES, LTD. | (713) 664-8600 | Energy |
| DAILY HERALD/TOWN SQUARE | 859-801-7210 | Newspapers |
| DANMARK FINANCIAL - DANIEL T. COIL | (630) 396-6440 | Financial Planning |
| DAVENPORT ARCHITECTS | (630) 512-0917 | Architects |
| DENTAL CURE | (630) 541-3119 | Dentists |
| LAW OFFICE OF DAVID L. DEPEW II | (630) 963-7500 | Attorneys - Business |
| DESTINY PLUMBING | (815) 494-6207 | Plumbing Contractors - Residential |
| DG FOOD & LIQUOR MART | (630) 968-5868 | |
| DIMOND BROS. INSURANCE LLC | (815) 999-7761 | Insurance |
| DIRECT TRADING INC. | (773) 240-0959 | |
| DISTRICT 99 EDUCATION FOUNDATION | (630) 795-7115 | Non-Profit Organizations |
| DIVEHEART | (630) 964-1983 | Non-Profit Organizations |
| DOGTASTIC FUN | (630) 541-3617 | Pet Day Care |
| DOUBLETREE BY HILTON LISLE NAPERVILLE | (630) 245-7600 | Hotels |
| DOUBLETREE SUITES BY HILTON HOTEL & CONFERENCE CENTER CHICAGO-DOWNERS GROVE | (630) 971-2000 | Hotels |
| DOWNERS GROVE AREA BRANCH OF AAUW | | Non-Profit Organizations |
| DOWNERS GROVE AREA FISH FOOD PANTRY | (630) 964-7776 | |
| DOWNERS GROVE AUTO REBUILDERS, INC. | (630) 969-7256 | Automobile Repairs and Maintenance |
| DOWNERS GROVE CHRISTIAN SCHOOL | (630) 852-0832 | Education |
| DOWNERS GROVE CPR LTD. | (630) 309-4009 | Health and Wellness |
| DOWNERS GROVE DOWNTOWN MANAGEMENT CORPORATION | (630) 725-0991 | Non-Profit Organizations |
| DOWNERS GROVE ECONOMIC DEVELOPMENT CORPORATION | (630) 729-0380 | Economic Development |
| DOWNERS GROVE FIRST UNITED METHODIST CHURCH | (630) 968-7120 | Churches |
| DOWNERS GROVE GRADE SCHOOL DISTRICT 58 | (630) 719-5800 | Education |
| THE DOWNERS GROVE HISTORICAL SOCIETY | | |
| DOWNERS GROVE LIVING MAGAZINE | 630-421-0325 | Advertising & Marketing |
| DOWNERS GROVE MOOSE LODGE #1535 | (630) 968-4550 | Non-Profit Organizations |
| DOWNERS GROVE PARK DISTRICT | (630) 960-7500 | Recreation and Sports Facilities |
| DOWNERS GROVE PARK DISTRICT - LINCOLN CENTER | (630) 963-1300 | Recreation and Sports Facilities |
| DOWNERS GROVE PARK DISTRICT RECREATION CENTER | (630) 960-7250 | Recreation and Sports Facilities |
| DOWNERS GROVE PUBLIC LIBRARY | (630) 960-1200 | Library |
| DOWNERS GROVE REHABILITATION & NURSING | (630) 969-2900 | Rehabilitation Center |
| DOWNERS GROVE SANITARY DISTRICT | (630) 969-0664 | Government Offices |
| DOWNERS GROVE TOWNSHIP | (630) 719-6610 | Government Offices |
| VILLAGE OF DOWNERS GROVE | (630) 434-5500 | Government Offices |
| DRAPER & KRAMER MORTGAGE CORP. - PAUL LUEKEN | (630) 376-0507 | Mortgages |
| DRIFTWOOD GRILLE | (815) 374-3893 | Restaurants |
| DULY HEALTH AND CARE | (630) 469-9200 | Health Care Services |
| DUPAGE CHILDREN'S MUSEUM | (630) 637-8000 | Non-Profit Organizations |
| DUPAGE FOUNDATION | (630) 665-5556 | Non-Profit Organizations |
| DUPAGE HABITAT FOR HUMANITY | (630) 510-3737 | Non-Profit Organizations |
| DUPAGE HABITAT FOR HUMANITY RESTORE - AURORA | (630) 585-5508 | Non-Profit Organizations |
| DUPAGE HEALTH COALITION | (630) 510-8720 | |
| DUPAGE SYMPHONY ORCHESTRA | (630) 778-1003 | |
| DUPAGE WORKFORCE INNOVATION BOARD/WORKNET DUPAGE CAREER CENTER | (630) 955-2033 | |
| DUPAGEPADS | (630) 682-3846 | Non-Profit Organizations |
| DUTCHMAN HEATING & COOLING | 630-961-2220 | Heating & Air Conditioning |
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