Carlisle. Major A roads within Cumbria include: Several bus companies run services in Cumbria serving the main towns and villages in the county, with some services running to neighbouring areas such as Lancaster. Stagecoach North West is the largest; it has depots in Barrow-in-Furness, Carlisle, Kendal and Workington. Stagecoach's flagship X6 route connects Barrow-in-Furness and Kendal in south Cumbria. Ports There are only two airports in the county: Carlisle Lake District and Barrow/Walney Island. Both airports formerly served scheduled passenger flights and both are proposing expansions and renovations to handle domestic and European flights in the near future. The nearest international airports to south Cumbria are Blackpool, Manchester, Liverpool John Lennon and Teesside. North Cumbria is closer to Newcastle, Glasgow Prestwick and Glasgow International. Barrow-in-Furness is one of the country's largest shipbuilding centres, but the Port of Barrow is only minor, operated by Associated British Ports alongside the Port of Silloth in Allerdale. There are no ferry links from any port or harbour along the Cumbria coast. Rail The busiest railway stations in Cumbria are Carlisle, Barrow-in-Furness, Penrith and Oxenholme Lake District. The West Coast Main Line runs through the Cumbria countryside, adjacent to the M6 motorway. The Cumbrian Coast Line connects Barrow-in-Furness to Carlisle and is a vital link in the west of the county. Other railways in Cumbria are the Windermere Branch Line, most of the Furness Line and much of the Settle-Carlisle Railway. Demography Cumbria's largest settlement and only city is Carlisle, in the north of the county. The largest town, Barrow-in-Furness, in the south, is slightly smaller. The county's population is largely rural: it has the second-lowest population density among English counties, and has only five towns with a population of over 20,000. Cumbria is also one of the country's most ethnically homogeneous counties, with 95.1% of the population categorised as White British (around 470,900 of the 495,000 Cumbrians). However, the larger towns have ethnic makeups that are closer to the national average. The 2001 census indicated that Christianity was the religion with the most adherents in the county. 2010 ONS estimates placed the number of foreign-born (non-United Kingdom) people living in Cumbria at around 14,000 and foreign nationals at 6,000. The 2001 UK Census showed the following most common countries of birth for residents of Cumbria that year: Settlements Largest parishes by district Twinnings Symbols and emblems The arms of Cumbria County Council were granted