In Finland, there are about 500 inhabited islands without a fixed connection.
85% confidence
TransportFinland
Omissions
The exact figure varies by source and year: 467 islands (2022 regional statistics) versus 549 islands (ministry report), so 'about 500' is a rounded approximation rather than a precise count.
Some of the cited figures explicitly exclude the Åland region (Selvitys ei koske Ahvenanmaan maakuntaa), so the total for all of Finland including Åland could be somewhat higher.
A separate, broader metric exists: nearly 20,000 islands without a fixed road connection have full- or part-time settlement (including seasonal residents), which is a different indicator from 'permanently inhabited islands'.