* Businesses in Bold are Chamber Members
| Company | Address | Phone Number |
| L. L. Clark, DDS * | 105 W. Bluff Street | 608-375-4549 |
| LaVon Reynolds Construction | 5408 E. LeGrand Street | 608-375-4338 |
| LDL Construction | 106 Cedar Road | 608-375-2438 |
| LDL Rentals | 106 Cedar Road | 608-375-2438 |
| Life O' Riley Farm * | 15706 Riley Rd. | 608-375-5798 |
| Lisa's Tax Solutions | 1406 Elm St. | 608-375-2886 |
| Little Bulldog Day Care / Sheila Davis | 700 E. Bluff St. | |
| Live, Laugh & Learn Playschool | 1002 Park Street | |
| Llaughing Llama Farm / Hunting Preserve * | 15492 Hwy. 61 S | 608-375-5774 |
| Lonnie & Millie's Barber & Hairstyling | 400 Park Street | 608-375-4553 |
| Lorenz Chiropractic * | 109 W. Oak Street | 608-375-2411 |
* Businesses in Bold are Chamber Members