About Seion
Seion is a small village located in Gwynedd, Wales, within the postcode area LL55. This community is primarily residential, offering a peaceful environment for its inhabitants. The village is surrounded by the natural beauty of the Welsh countryside, making it a suitable spot for those who appreciate rural life. The area is well-connected to nearby towns and attractions, providing easy access to local amenities. Visitors can explore the surrounding landscapes, which include hills and valleys typical of this region. Seion serves as a practical base for exploring the broader attractions of Gwynedd, including historical sites and outdoor activities.
School Ratings in Seion
There are 35 schools in and around Seion.
House Prices in Seion
The average property price is £207K, with terraced houses making up the majority of the housing stock at around £146K.
Crime and Anti-Social Behaviour in Seion
Recorded crime levels are lower than the national average. Criminal damage & arson is prevalent across Seion, with 2 recorded incidents in January 2026.
Broadband and Mobile Internet in Seion
Broadband speeds in Seion are generally strong, with superfast and ultrafast options widely available. Mobile coverage across 4G and 5G networks is reliable throughout most of the area. For the latest speed predictions, visit Ofcom's broadband checker.
Property Prices 2,591 sales
Schools & Education 12 nearby View all schools
Crime in Seion 11 crimes · January 2026
Seion records relatively low levels of reported crime compared to national averages. Violence & sexual offences is the most commonly logged offence type, though overall numbers remain modest. The area is generally considered a safe and settled town with a strong sense of community.
Crime figures depend on reporting by individual police forces and may not reflect the full picture in all areas.



