There are 476 Irish citizens officially registered with the Irish Consulate General in Hong Kong. However, Ireland does not require its citizens to register with Embassies and Consulates, so this number is not an accurate representation of the number of Irish citizens in Hong Kong.
Based on the number of passports processed over the past 10 years, the Consulate estimates that there are between 5000 - 5200 Irish citizens in the city. A number of these citizens have Hong Kong permanent residency, or have dual citizenship and so may be registered with another Consulate.