- Data only includes miles travelled on county roads. It does not include miles travelled on city, state or federal roads and highways.
- Lack of a visible bar can occur when the number is so small the result is a bar less than one pixel in height.
| Data for the Willacy County Road Miles Chart |
|---|
| Calendar Year | Number of All Vehicle Miles | Change from Prior Year | Number of Truck Miles | Change from Prior Year |
|---|
| 2005 | 20,218.340 | N/A | 639.173 | N/A |
| 2006 | 20,734.060 | 2.6% | 655.675 | 2.6% |
| 2007 | 20,724.200 | 0.0% | 663.175 | 1.1% |
| 2008 | 20,746.080 | 0.1% | 658.144 | -0.8% |
| 2009 | 22,066.455 | 6.4% | 696.400 | 5.8% |
| 2010 | 22,172.665 | 0.5% | 709.525 | 1.9% |
| 2011 | 23,940.145 | 8.0% | 766.085 | 8.0% |
| 2012 | 24,151.785 | 0.9% | 772.857 | 0.9% |
| 2013 | 24,339.355 | 0.8% | 778.859 | 0.8% |
| 2014 | 23,152.637 | -4.9% | 807.464 | 3.7% |
| 2015 | 23,189.757 | 0.2% | 766.934 | -5.0% |
| 2016 | 23,224.317 | 0.1% | 775.558 | 1.1% |
| 2017 | 23,062.312 | -0.7% | 588.031 | -24.2% |
| 2018 | 23,154.423 | 0.4% | 607.489 | 3.3% |
| 2019 | 27,742.147 | 19.8% | 1,024.326 | 68.6% |
| 2020 | 27,791.526 | 0.2% | 1,023.453 | -0.1% |
| 2021 | 27,792.937 | 0.0% | 970.587 | -5.2% |
| 2022 | 27,204.771 | -2.1% | 712.141 | -26.6% |