The PA postcode area, also known as the Paisley postcode area,[2] is a group of 67 postcode districts in western Scotland, within 35 post towns.

These cover Renfrewshire (including Paisley, Renfrew, Johnstone, Bishopton, Erskine, Bridge of Weir and Lochwinnoch), Inverclyde (including Greenock, Port Glasgow, Gourock, Kilmacolm and Wemyss Bay) and most of Argyll and Bute (including Oban, Lochgilphead, Tarbert, Campbeltown, Appin, Taynuilt, Bridge of Orchy, Dalmally, Inveraray, Cairndow, Colintraive, Dunoon, Tighnabruaich, and the Isles of Mull, Iona, Coll, Tiree, Jura, Colonsay, Islay, Gigha and Bute), plus small parts of North Ayrshire (including Skelmorlie) and Highland.

Mail for the PA postcode area is processed at Glasgow Mail Centre, along with mail for the G, ML, KA and ZE postcode areas.

The approximate coverage of the postcode districts: Ballachulish and Kinlochleven were originally coded PA39 and PA40 respectively, before being transferred to the PH area in 1999 as PH49 and PH50.

[4][5] Until January 1995, PA80 to PA87 were allocated to the islands of the Outer Hebrides, after which these formed the HS postcode area.