From Wikipedia
Chest artícol al è scricc in Bergamasch, ortograféa ünificada |
 |
Jefferson County, Illinois |
Map |

Location in the state of Illinois |

Illinois's location in the USA |
Statistics |
Founded |
1819 |
Seat |
Mount Vernon |
Largest City |
Mount Vernon |
Area
- Total
- Land
- Water |
584 sq mi (1,512 km²)
571 sq mi (1,479 km²)
13 sq mi (33 km²), 2.19% |
Population
- (2000)
- Density |
40,045
70/sq mi (27/km²) |
Time zone |
Central : UTC-6/-5 |
Jefferson County, Illinois a l'è è öna contèa locada in del stat Americà de Illinois.
- La sò sitat-cadrega a l'è Mount Vernon.
Template:Illinois