Founded in 1860, Boyd County is one of 120 counties in the state of Kentucky. Historically, Boyd County was formed from Greenup County, Carter County and Lawrence County. The city of Catlettsburg is the county seat. With FIPS code of 19, Boyd County has a population of 47,899 and area of 160 square miles (414 km2).
List of all cities in Boyd County, KY alphabetically
| City/Town | Postal Code | Area Code |
| Ashland, KY | 41101 | 606 |
| 41102 | 606 | |
| 41105 | 606 | |
| 41114 | 606 | |
| Ashland Oil Inc, KY | 41114 | 606 |
| Bellefonte, KY | 41101 | 606 |
| Catlettsburg, KY | 41129 | 606 |
| Coalton, KY | 41168 | 606 |
| Ironville, KY | 41101 | 606 |
| Kilgore, KY | 41168 | 606 |
| Meads, KY | 41101 | 606 |
| Millseat, KY | 41101 | 606 |
| Naples, KY | 41101 | 606 |
| 41105 | 606 | |
| Princess, KY | 41101 | 606 |
| Rockdale, KY | 41101 | 606 |
| Rush, KY | 41168 | 606 |
| Summitt, KY | 41101 | 606 |
| 41102 | 606 | |
| 41105 | 606 | |
| West Fairview, KY | 41101 | 606 |
| Westwood, KY | 41101 | 606 |