Editing Johnson County, Illinois (section)

==Geography==
According to the [[U.S. Census Bureau]], the county has a total area of {{convert|349|sqmi}}, of which {{convert|344|sqmi}} is land and {{convert|4.9|sqmi}} (1.4%) is water.<ref name="census-density"/>

===Climate and weather===
{{climate chart
|[[Vienna, Illinois]]
|25|43|3.37
|29|50|3.39
|38|60|4.60
|46|71|4.74
|55|79|5.16
|63|87|4.10
|67|90|3.75
|65|90|3.60
|58|84|3.26
|47|73|3.16
|39|59|4.71
|29|47|4.40
|float=right
|units=imperial
|clear=both
|source=The Weather Channel<ref name="weather">{{cite web
  |url=http://www.weather.com/weather/wxclimatology/monthly/graph/USIL1208
  |title=Monthly Averages for Vienna, Illinois
  |access-date=January 27, 2011
  |publisher=The Weather Channel
}}</ref>}}
In recent years, average temperatures in the county seat of Vienna have ranged from a low of {{convert|25|°F}} in January to a high of {{convert|90|°F}} in July, although a record low of {{convert|-20|°F}} was recorded in January 1977 and a record high of {{convert|103|°F}} was recorded in August 2007. Average monthly precipitation ranged from {{convert|3.16|in}} in October to {{convert|5.16|in}} in May.<ref name="weather"/>

===Major highways===
* [[Image:I-24.svg|20px]] [[Interstate 24]]
* [[Image:I-57.svg|20px]] [[Interstate 57]]
* [[Image:US 45.svg|20px]] [[U.S. Route 45 in Illinois|U.S. Route 45]]
* [[Image:Illinois 37.svg|20px]] [[Illinois Route 37]]
* [[Image:Illinois 146.svg|20px]] [[Illinois Route 146]]
* [[Image:Illinois 147.svg|20px]] [[Illinois Route 147]]
* [[Image:Illinois 166.svg|20px]] [[Illinois Route 166]]

===Transit===
* [[List of intercity bus stops in Illinois]]

===Adjacent counties===
* [[Williamson County, Illinois|Williamson County]] - north
* [[Saline County, Illinois|Saline County]] - northeast
* [[Pope County, Illinois|Pope County]] - east
* [[Massac County, Illinois|Massac County]] - southeast
* [[Pulaski County, Illinois|Pulaski County]] - southwest
* [[Union County, Illinois|Union County]] - west

===National protected areas===
* [[Cypress Creek National Wildlife Refuge]] (part)
* [[Shawnee National Forest]] (part)