4 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 41102 | Ashland | 20,779 |
| 41101 | Ashland | 19,331 |
| 41129 | Catlettsburg | 8,417 |
| 41168 | Rush | 3,640 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 4 ZCTAs in Boyd County, Kentucky (US Census).