道路里程密度（公里／平方公里） 本頁資料JSON| 縣市 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 |
|---|
| 南投縣 | 0.490206106 | 0.503112675 | 0.504086756 | 0.50993124 | 0.518210925 | 0.526490611 | 0.518210925 | 0.518941486 | 0.508957159 | 0.473159694 | 0.508470119 | 0.520402607 | 0.52454245 | 0.528925813 | 0.527708212 | 0.526734131 | - |
| 嘉義市 | 7.696716068 | 7.713375626 | 7.829992537 | 8.063226357 | 8.313119736 | 8.446396204 | 8.529693997 | 8.546353556 | 8.696289583 | 8.746268259 | 8.84622561 | 8.02990724 | 8.063226357 | 8.046566798 | 8.063226357 | 8.096545474 | - |
| 嘉義縣 | 1.092196474 | 1.146359323 | 1.059067742 | 1.071162358 | 1.082731122 | 1.082731122 | 1.090618916 | 1.093772595 | 1.110074014 | 1.110074014 | 1.110599866 | 1.12311346 | 1.122588149 | 1.196656904 | 1.198232835 | 1.164087664 | - |
| 基隆市 | 1.619477112 | 1.627009564 | 1.724931436 | 2.365189829 | 2.380254732 | 2.380254732 | 2.387787184 | 2.395319636 | 4.798171723 | 4.850898885 | 4.926223402 | 4.617392883 | 4.655055141 | 4.64752269 | 4.670120045 | 4.670120045 | - |
| 宜蘭縣 | 0.521079922 | 0.527144415 | 0.534608407 | 0.54953639 | 0.618111814 | 0.618578314 | 0.619044813 | 0.62184381 | 0.636305294 | 0.627441804 | 0.630240801 | 0.61344682 | 0.61344682 | 0.61298032 | 0.629307802 | 0.629307802 | - |
| 屏東縣 | 0.913315941 | 0.948983901 | 0.952226443 | 0.97708593 | 0.977806495 | 0.98897525 | 0.994019204 | 0.996180898 | 0.997622028 | 1.000504287 | 1.003746829 | 1.025363774 | 1.026444622 | 1.027525469 | 1.027885751 | 1.028606316 | - |
| 彰化縣 | 1.886641425 | 1.900602757 | 1.947140533 | 1.92294089 | 1.934109956 | 1.941556 | 1.986232264 | 2.029977774 | 2.036493062 | 2.048592884 | 2.069069505 | 2.100715193 | 2.114676525 | 2.133291635 | 2.160283545 | 2.111884259 | - |
| 新北市 | 1.163421388 | 1.152703101 | 1.127856162 | 1.147343957 | 1.163421388 | 1.186806743 | 1.238449401 | 1.268655484 | 1.278886576 | 1.304220711 | 1.310554244 | 1.354401784 | 1.401172493 | 1.407018832 | 1.489841962 | 1.705182102 | - |
| 新竹市 | 3.535184694 | 3.583217095 | 3.602430055 | 3.669675416 | 3.736920777 | 3.756133738 | 3.794559658 | 3.832985579 | 4.531811976 | 4.560615866 | 4.013341962 | 4.042145851 | 4.061348444 | 5.059883287 | 5.069484583 | 5.098288473 | - |
| 新竹縣 | 0.738305614 | 0.738305614 | 0.746010891 | 0.757218566 | 0.752315208 | 0.757218566 | 0.757919046 | 0.757218566 | 0.788070697 | 0.790172219 | 0.790172219 | 0.781065624 | 0.879837152 | 0.89314679 | 0.893847297 | 0.893847297 | - |
| 桃園市 | 1.516027631 | 1.594654672 | 1.60857821 | 1.654443984 | 1.742899405 | 1.7453565 | 1.778117767 | 1.782212925 | 1.805145812 | 1.840364174 | 2.213842618 | 2.228585188 | 2.248241949 | 2.252337107 | 2.241689695 | 2.266260645 | - |
| 澎湖縣 | 1.962730197 | 1.970612648 | 1.986377549 | 2.00214245 | 2.010024901 | 2.010024901 | 2.010024901 | 2.025789802 | 2.041554703 | 2.049437154 | 2.049437154 | 2.033672252 | 2.049437154 | 2.112496758 | 2.112496758 | 2.080966956 | - |
| 臺中市 | 1.687663281 | 1.704819836 | 1.733263599 | 1.762610339 | 1.797374939 | 1.825367213 | 1.829882097 | 1.809565123 | 1.87412795 | 1.88496367 | 1.932369942 | 1.881351763 | 1.892638971 | 1.902120225 | 1.911149991 | 1.91160148 | - |
| 臺北市 | 4.610012447 | 4.628408346 | 4.602654087 | 4.643125066 | 4.646804246 | 4.661520966 | 4.665200146 | 4.672558505 | 4.683596045 | 4.687275225 | 4.687275225 | 4.95953454 | 4.96321372 | 4.96321372 | 4.974251259 | 4.977930439 | - |
| 臺南市 | 1.737044973 | 1.785866568 | 1.822824972 | 1.879859545 | 1.91271146 | 1.91271146 | 1.936894119 | 1.940544332 | 1.964726991 | 2.021305288 | 2.036818692 | 2.044119117 | 2.058719968 | 2.170964009 | 2.101153691 | 2.107541563 | - |
| 臺東縣 | 0.346490036 | 0.364411934 | 0.364980884 | 0.365549833 | 0.366687731 | 0.366687731 | 0.363842985 | 0.371239324 | 0.371523799 | 0.373799596 | 0.373230646 | 0.372946172 | 0.372946172 | 0.372946172 | 0.378635663 | 0.378066714 | - |
| 花蓮縣 | 0.298364199 | 0.299876545 | 0.304197533 | 0.303981483 | 0.30182099 | 0.305709878 | 0.288641977 | 0.306574076 | 0.313919755 | 0.319753088 | 0.319969138 | 0.329907409 | 0.343302471 | 0.343302471 | 0.343302471 | 0.343302471 | - |
| 苗栗縣 | 0.709217949 | 0.715810215 | 0.724599903 | 0.736136368 | 0.756462522 | 0.759758655 | 0.776788675 | 0.783930297 | 0.794368051 | 0.798762895 | 0.807552583 | 0.888857197 | 0.910831417 | 0.917423683 | 0.916874328 | 1.001475074 | - |
| 連江縣 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 金門縣 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 雲林縣 | 1.679532885 | 1.681856962 | 1.657066809 | 1.687279808 | 1.7081965 | 1.732211961 | 1.7283385 | 1.753132048 | 1.829826734 | 1.868561423 | 1.866237342 | 1.904197337 | 1.915043051 | 1.900323868 | 1.884829993 | 1.884829993 | - |
| 高雄市 | 1.257184048 | 1.283318814 | 1.324387731 | 1.355274272 | 1.350861909 | 1.354256035 | 1.189980365 | 1.205932755 | 1.23342517 | 1.240213421 | 1.24937756 | 1.309114167 | 1.317260068 | 1.33531645 | 1.618256978 | 1.643362013 | - |