charlestown postcode nsw Home ›› Postcode Finder ›› NSW ›› Charlestown Charlestown local listingsThe suburb of Charlestown is located in NSW and has a postcode of 2290. Free charlestown business listing! 1Charlestown East Public School90-100 James St 02 494351732Charlestown Public School15 Frederick St 02 494340633Charlestown South Public School9 Patricia Ave 02 49435827 View more business listings in charlestown Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.