gloucester postcode nsw Home ›› Postcode Finder ›› NSW ›› Gloucester Gloucester local listingsThe suburb of Gloucester is located in NSW and has a postcode of 2422. Free gloucester business listing! 1Gloucester High School129 Ravenshaw St 02 655816052Gloucester Public School5 Hume St 02 655813033St Joseph's School53 Denison St 02 65581555 View more business listings in gloucester Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.