* Businesses in Bold are Chamber Members
| Company | Address | Phone Number |
| B C Mini Storage | 1700 Elm Street | 608-375-8000 |
| Badger Country Pest Control * | 6759 State Rd 133 | 608-843-7509 |
| BAHC / Adult Day Care | 205 Parker Street | 608-375-4112 Ext. 61 |
| Baumeister Construction, LLC | 18420 Hidden Meadow Ln. | 608-375-5655 |
| Baumeister Plumbing | 16408 S. Hwy. 61 | 608-375-5484 |
| Baumeister, Robin | 16857 Co. Rd.. S | 608-375-5655 |
| Bedward Rentals / Boscobel | 307 Main Street | 608-533-2932 |
| Beeman - Patchak Funeral Home * | 104 Fremont Street | 608-375-4116 |
| Beinborn Brothers Const. | 17190 Saunders View Road | 608-375-5844 |
| Beinborn Pump Sales & Service | 1700 Wisconsin Ave. | 608-375-4476 |
| Beinborn, Dan | 17099 Saunder View Road | 608-375-5844 |
| Beinborn, Herman | 17438 Cedar Road | 608-375-7400 |
| Bikers Helping Friends Wishes, Inc * | PO Box 143 | 608-375-5473 |
| Blaine Theatre * | 102 East Oak Street | 608-375-4137 |
| Blooming Basket | 106 W. Oak Street | 608-375-4472 |
| Bluff Street Clinic * | 200 W. Bluff Street | 608-375-2424 |
| Bob's Auto Body Collision Spec. Inc. * | 1202 Elm Street | 608-375-4434 |
| Bohlman Drug Store * | 1028 Wisconsin Avenue | 608-375-4466 |
| Boscobel Area Health Care * | 205 Parker Street | 608-375-4112 |
| Boscobel Area Public Schools * | 1110 Park Street | 608-375-4164 |
| Boscobel Auto Body | 106 Commercial Row | 608-375-2107 |
| Boscobel Bowling & Banquet * | 16971 Hwy 61 S | 608-375-2200 |
| Boscobel Clinic S.C. * | 208 Parker Street | 608-375-4144 |
| Boscobel Counseling Services | 205 Parker Street | 608-375-2111 |
| Boscobel Dial * | 901 Wisconsin Avenue | 608-375-4458 |
| Boscobel Electric & Lighting Supply Co. | 600 State Hwy. 133 West | 608-375-LITE |
| Boscobel Elementary School * | 200 Buchanan Street | 608-375-4165 |
| Boscobel Excavating | 5408 E. LeGrand Street | 608-375-4338 |
| Boscobel Family Housing | 608-735-4473 | |
| Boscobel Feed and Supply | 301 North Street | 608-375-2575 |
| Boscobel Fire Department | 510 Wisconsin Avenue | 608-375-4121 |
| Boscobel Hotel (Central House) | 1005 Wisconsin Avenue | 608-375-4714 |
| Boscobel Housing Authority | 213 Wisconsin Avenue | 608-375-4228 |
| Boscobel Jr / Sr High School * | 300 Brindley Street | 608-375-4161 |
| Boscobel Lumber, Inc. * | 1519 Elm Street | 608-375-5323 |
| Boscobel Municipal Airport | 100 James Drive | 608-375-5223 |
| Boscobel Music & Vending * | 1119 Wisconsin Avenue | 608-375-5767 |
| Boscobel Plumbing | 500 State Road 133 W | 608-375-4221 |
| Boscobel Post Office | 105 Superior Street | 608-375-5468 |
| Boscobel Ready Mix * | 1000 Elm Street | 608-375-5071 |
| Boscobel Refrigeration & Electric | 5368 Old C | 608-375-4285 |
| Boscobel Rescue Squad | 510 Wisconsin Ave. | 608-375-2662 |
| Boscobel Tire & Tow | 501 Elm Street | 608-375-2350 |
| Boscobel Utilities * | 608-375-5002 | |
| Boscobel Veterinary Clinic | 102 LaBelle Street | 608-375-4440 |
| Boscobel Auto Clinic (AAA) * | 1520 Elm Street | 608-375-5550 |
| Bumper To Bumper | 308 W. Bluff Street | 608-375-5261 |
* Businesses in Bold are Chamber Members