- 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 Donley County Road Miles Chart |
|---|
| Calendar Year | Number of All Vehicle Miles | Change from Prior Year | Number of Truck Miles | Change from Prior Year |
|---|
| 2005 | 27,499.366 | N/A | 878.971 | N/A |
| 2006 | 27,851.606 | 1.3% | 890.241 | 1.3% |
| 2007 | 9,272.798 | -66.7% | 296.729 | -66.7% |
| 2008 | 9,729.167 | 4.9% | 311.337 | 4.9% |
| 2009 | 9,725.647 | 0.0% | 311.221 | 0.0% |
| 2010 | 9,221.986 | -5.2% | 295.104 | -5.2% |
| 2011 | 9,624.056 | 4.4% | 307.970 | 4.4% |
| 2012 | 10,763.592 | 11.8% | 344.435 | 11.8% |
| 2013 | 10,764.736 | 0.0% | 344.472 | 0.0% |
| 2014 | 10,765.072 | 0.0% | 344.482 | 0.0% |
| 2015 | 10,765.072 | 0.0% | 344.482 | 0.0% |
| 2016 | 10,765.072 | 0.0% | 344.482 | 0.0% |
| 2017 | 12,191.219 | 13.2% | 511.493 | 48.5% |
| 2018 | 12,273.592 | 0.7% | 514.204 | 0.5% |
| 2019 | 12,400.902 | 1.0% | 322.346 | -37.3% |
| 2020 | 12,763.958 | 2.9% | 358.908 | 11.3% |
| 2021 | 12,771.758 | 0.1% | 330.537 | -7.9% |
| 2022 | 7,299.818 | -42.8% | 59.825 | -81.9% |