| Locality | Post Code |
|---|---|
| Ashland, Boyd | 41101, 41102 |
| Bellefonte, Boyd | 41101 |
| Catlettsburg, Boyd | 41129 |
| Coalton, Boyd | 41168 |
| Ironville, Boyd | 41101 |
| Kilgore, Boyd | 41168 |
| Meads, Boyd | 41101 |
| Millseat, Boyd | 41101 |
| Naples, Boyd | 41101 |
| Princess, Boyd | 41101 |
| Rockdale, Boyd | 41101 |
| Rush, Boyd | 41168 |
| Summitt, Boyd | 41101, 41102 |
| West Fairview, Boyd | 41101 |
| Westwood, Boyd | 41101 |