Pitcairn Business Directory: PCN is the ISO 3 alphabet country code of Pitcairn. Currency of Pitcairn is $, which has a short code of NZD. Capital of Pitcairn is Adamstown. Pitcairn has the population of 54 and approximate area is 47.00 square kilometers (or approx. 29.2058 square miles). Population density of Pitcairn is approx. 1/Km2 (or approx. 0.6214/mile2)