Isle of Anglesey is a Welsh Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 307,800,000 | 245,800,000 | 724.6 miles (1,166.2 km) |
| 2001 | 349,100,000 | 281,800,000 | 746.8 miles (1,201.9 km) |
| 2002 | 349,000,000 | 280,700,000 | 747.8 miles (1,203.4 km) |
| 2003 | 361,100,000 | 288,600,000 | 748.8 miles (1,205.0 km) |
| 2004 | 370,700,000 | 295,300,000 | 749.6 miles (1,206.3 km) |
| 2005 | 371,400,000 | 293,100,000 | 750.1 miles (1,207.2 km) |
| 2006 | 381,300,000 | 300,900,000 | 765.5 miles (1,232.0 km) |
| 2007 | 386,600,000 | 300,600,000 | 765.9 miles (1,232.6 km) |
| 2008 | 389,400,000 | 303,600,000 | 762.4 miles (1,226.9 km) |
| 2009 | 385,900,000 | 303,300,000 | 759.6 miles (1,222.4 km) |
| 2010 | 382,000,000 | 299,800,000 | 756.9 miles (1,218.1 km) |
| 2011 | 378,400,000 | 298,100,000 | 754.9 miles (1,214.9 km) |
| 2012 | 377,500,000 | 297,900,000 | 755.3 miles (1,215.6 km) |
| 2013 | 376,400,000 | 296,900,000 | 755.9 miles (1,216.5 km) |
| 2014 | 388,300,000 | 304,300,000 | 756.7 miles (1,217.7 km) |
| 2015 | 393,300,000 | 305,900,000 | 751.5 miles (1,209.4 km) |
| 2016 | 407,400,000 | 315,300,000 | 753.4 miles (1,212.5 km) |
| 2017 | 415,300,000 | 318,000,000 | 754.1 miles (1,213.6 km) |
| 2018 | 419,400,000 | 319,500,000 | 752.2 miles (1,210.5 km) |
| 2019 | 420,700,000 | 319,500,000 | 752.1 miles (1,210.3 km) |
| 2020 | 326,700,000 | 240,500,000 | 753.5 miles (1,212.7 km) |
| 2021 | 367,600,000 | 270,000,000 | 755.0 miles (1,215.0 km) |
| 2022 | 400,200,000 | 295,800,000 | 754.8 miles (1,214.8 km) |
| 2023 | 405,300,000 | 302,100,000 | 755.7 miles (1,216.1 km) |