The league structure for the 2018/19 Pembrokeshire football campaign means no sides have been relegated from any divisions last season.

Teams folding over the course of last season and this summer has meant some bonus promotions for sides in Divisions Three, Four and Five - while new entrants Newport Tigers will play in the bottom tier. They will be joined by Tenby, who return after withdrawing from the league in the summer of 2017, and Monkton Swifts III.

Pembrokeshire League structure for 2018/19 season:
Division One:
Carew        
Clarbeston Road    
Goodwick United        
Hakin United        
Herbrandston    
Lamphey    
Merlins Bridge        
Milford United        
Monkton Swifts    
Narberth    
Neyland    
Pennar Robins    
Saundersfoot Sports (promoted in 2nd)
St Clears (promoted in 3rd)

Division Two:

Broad Haven (promoted in 2nd)
Camrose (promoted as champions)    
Fishguard Sports      
Hakin United II  
Hundleton  
Johnston   
Kilgetty
Lawrenny     
Letterston
Llangwm    
Merlins Bridge II 
Prendergast Villa
Solva    
St Ishmaels

Division Three:
Carew II        
Clarbeston Road II    
Fishguard Sports II (promoted in 2nd)
Goodwick United II
Milford Athletic        
Milford United II    
Monkton Swifts II (promoted as champions)        
Narberth II
Pembroke Boro    
Pendine        
Pennar Robins II
Solva II (promoted in 4th)    
St Clears II (promoted in 3rd)
St Florence

Division Four:
Broad Haven II        
Camrose II (promoted in 3rd)    
Cosheston AFC (promoted as champions)       
Herbrandston II    
Hundleton II (promoted in 2nd)    
Kilgetty II        
Llangwm II
Neyland II    
Pembroke Boro II (promoted in 4th)       
Pennar Robins III    
St Ishmaels II    

Division Five:
Carew III    
Johnston II    
Lawrenny II
Letterston II         
Milford Athletic II        
Milford United III 
Monkton Swifts III (new entry)
Newport Tigers (new entry)    
Saundersfoot Sports II
Tenby (new entry)