Lapland Finland is actually quite a large area. In this article you can find a couple of links to Lapland Finland Map, and also our own Lapland map.
Lapland is about a third of Finland’s overall area. It is the northernmost part as you can see from the map. Our Lapland map tells you also the location of Rovaniemi, often called as the capital of Lapland, and also the capital of Finland, Helsinki. So, from the map you can see that Lapland covers a good part of Finland.
You should also read where is Lapland to find out more about Lapland.