| CETA Tours | Tour operator | 3120 Schneider Ave SE #1b | Mon–Fri 8:30 AM–4:30 PM |
| China Buffet | Chinese restaurant | 2421 WI-25 | Fri 11 AM–9 PM |
| Chippewa Valley Bean | Grain elevator | N2960 730th St | Fri Open 24 hours |
| Chippewa Valley Warehouse Op | Warehouse | 5613 3M Dr | Mon–Fri 7 AM–10:30 PM |
| Choice Commercial, LLC | Warehouse | 1409 Indianhead Dr E | Mon–Fri 8 AM–4:30 PM |
| Christ Lutheran Church | Lutheran church | Elm & Wilcox Streets,, 1306 Wilcox St | Mon–Tue 9 AM–2:30 PM |
| Christina M. Mayer Law Firm SC | Attorney | 700 Wolske Bay Rd #100 | Mon–Thu 8 AM–5 PM |
| Churchill Detailing | Car detailing service | E3937 WI-72 | Mon–Fri 9 AM–3 PM |
| Citizens State Bank | Bank | 1602 N Broadway St N | Fri 8:30 AM–5 PM |
| Classic Protective Coatings, Inc. | Painter | N7670 WI-25 | Fri 7 AM–5 PM |
| Clean Air Pro | HVAC contractor | 600 Midway Rd | Tue 7 AM–8 PM |
| Clear View Exterior Care | Window cleaning service | 3008 Schabacker Ct Apt 3 | Daily 7 AM–6 PM |
| CNG - Love's Alternative Energy | Alternative fuel station | 2100 County Rd B | Fri Open 24 hours |
| Comforts of Home Menomonie Advanced Assisted Living | Assisted living facility | 917 22nd Ave N | Fri Open 24 hours |
| Community Foundation of Dunn County | Non-profit organization | 800 Wilson Ave Ste 235 | Mon–Thu 9 AM–4 PM |
| ConAgra Foods, Inc. | Food manufacturer | 104 River Rd | Daily Open 24 hours |
| Cook's Mini Storage | Self-storage facility | N4379 WI-25 | Daily Open 24 hours |
| Cowboy's 24/7 Indoor Golf | Indoor golf course | 1502 9th St E | Daily Open 24 hours |
| Cradle, Stake, LLC. | Home improvement store | E5662 490th Ave | Fri Open 24 hours |
| Curran - Kranzusch - Tustison - Oetting Hall | Student dormitory | 1105 3rd St E | Mon–Fri 8 AM–4:30 PM |
| Cutting Edge Outdoor Services LLC | Lawn care service | Wagner Rd | Mon–Sat 7 AM–5 PM |
| Dave Howe Memorial Field, Ball Diamond #2 | Baseball field | Menomonie, WI 54751 | Fri Open 24 hours |
| David Brier | Marketing consultant | DBD International, Ltd, 3120 Schneider Ave SE Ste 7 | Fri 9 AM–5 PM |
| DCL Rentals | Property management company | 2704 Nelson Dr | Fri 9 AM–5 PM |
| Design Built Structures | Contractor | 600 N Midway Rd | Mon–Fri 7 AM–7 PM |
| Dick’s Fresh Market | Grocery store | 1408 9th St E | Daily 7 AM–9 PM |
| DKS Construction Services | Excavating contractor | 2520 Wilson St | Fri 8 AM–4:30 PM |
| Dragon Tale Books | Book store | 216 Main St E | Mon 10 AM–5 PM |
| Drug Test Midwest, LLC | Drug testing service | 815 6th Ave E #3 | Mon–Thu 9 AM–4 PM |
| Dunham's Sports | Sporting goods store | 1501 N Broadway St Suite 1599 | Mon–Sat 9 AM–9 PM |
| Dunn County Clerk | County government office | 3001 US-12 Ste 102B | Mon–Fri 8 AM–4:30 PM |
| Dunn County Corporation Counsel | County government office | 3001 US-12 Ste 263 | Fri 8 AM–4:30 PM |
| Dunn County Government Center | County government office | 3001 US Highway 12E | Mon–Fri 8 AM–4:30 PM |
| Dunn County Health Department | Public health department | 3001 US-12 Ste 032 | Fri 8 AM–4:30 PM |
| Dunn County Historical Society | Museum | 1820 John Russell Rd | Fri 11 AM–5 PM |
| Dunn County Housing Authority | Housing authority | 1421 Stout Rd | Fri 8 AM–4 PM |