| | | Allen County | KY | 21003 | | Bowling Green, KY 14540 | Bowling
Green-Glasgow-Franklin,
KY 150 | Outlying | metro county (urban) | farm-dependent | https://maps.google.com/?q=AllenCounty+KY |
| | | Boone County | KY | 21015 | | Cincinnati, OH-KY-IN 17140 | Cincinnati-Wilmington,
OH-KY-IN 178 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BooneCounty+KY |
| | | Bourbon County | KY | 21017 | | Lexington-Fayette, KY 30460 | Lexington-Fayette--Richmond--Frankfort,
KY 336 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BourbonCounty+KY |
| | | Boyd County | KY | 21019 | | Huntington-Ashland,
WV-KY-OH 26580 | Charleston-Huntington-Ashland,
WV-OH-KY 170 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BoydCounty+KY |
| | | Bracken County | KY | 21023 | | Cincinnati, OH-KY-IN 17140 | Cincinnati-Wilmington,
OH-KY-IN 178 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=BrackenCounty+KY |
| | | Bullitt County | KY | 21029 | | Louisville/Jefferson
County, KY-IN 31140 | Louisville/Jefferson
County--Elizabethtown,
KY-IN 350 | Central | metro county (urban) | nonspecialized | https://maps.google.com/?q=BullittCounty+KY |
| | | Butler County | KY | 21031 | | Bowling Green, KY 14540 | Bowling
Green-Glasgow-Franklin,
KY 150 | Outlying | metro county (urban) | manufacturing-dependent | https://maps.google.com/?q=ButlerCounty+KY |
| | | Campbell County | KY | 21037 | | Cincinnati, OH-KY-IN 17140 | Cincinnati-Wilmington,
OH-KY-IN 178 | Central | metro county (urban) | federal/state
government-dependent | https://maps.google.com/?q=CampbellCounty+KY |
| | | Christian County | KY | 21047 | | Clarksville, TN-KY 17300 | | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=ChristianCounty+KY |
| | | Clark County | KY | 21049 | | Lexington-Fayette, KY 30460 | Lexington-Fayette--Richmond--Frankfort,
KY 336 | Outlying | metro county (urban) | nonspecialized | https://maps.google.com/?q=ClarkCounty+KY |
