| Locality | Post Code |
|---|---|
| Atwood, Clark | 54460 |
| Chili, Clark | 54420 |
| Christie, Clark | 54456 |
| Clark, Clark | 54498 |
| Colby, Clark | 54421 |
| Curtiss, Clark | 54422 |
| Dorchester, Clark | 54425 |
| Eaton, Clark | 54437 |
| Granton, Clark | 54436 |
| Green Grove, Clark | 54460 |
| Greenwood, Clark | 54437 |
| Hendren, Clark | 54493 |
| Hoard, Clark | 54422 |
| Humbird, Clark | 54746 |
| Longwood, Clark | 54498 |
| Loyal, Clark | 54446 |
| Lynn, Clark | 54436 |
| Maplehurst, Clark | 54498 |
| Neillsville, Clark | 54456 |
| Owen, Clark | 54460 |
| Redville, Clark | 54498 |
| Spokeville, Clark | 54446 |
| Thorp, Clark | 54771 |
| Willard, Clark | 54493 |
| Withee, Clark | 54498 |
| York, Clark | 54436 |