Western Kentucky

• The Jackson Purchase, the state's westernmost generally recognized region, west of the Tennessee River
• The Western Coal Field, including the Clifty Region

• The Pennyroyal Plateau, known in Western Kentucky as the "Pennyrile", which lies south and east of the Western Coal Field and is across the Tennessee River from the Purchase. Most of this region is generally included in "Western Kentucky".

• The western half of the region more commonly known as South Central Kentucky, which significantly overlaps with the Pennyrile