Dennison, Illinois
Dennison, Illinois, in Clark County, has ZIP code 62423 and area code 217, with 447 as an overlay.
- ZIP code
- 62423
- Area codes
- 217, 447
- County
- Clark County
- State
- Illinois
- Time zone
- Central Time
- Coordinates
- 39.4490, -87.5867
ZIP codes in Dennison
Area codes for Dennison
- Area code 217
In service since 1947. Shares its area with 447. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
- Area code 447
In service since March 27, 2021. Shares its area with 217. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.
Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.
Time zone
Dennison is in the Central Time zone.
Towns near Dennison
- Marshall9.6 km (6.0 mi)
- Vermilion14.7 km (9.1 mi)
- Paris20.6 km (13 mi)
- West Union23.9 km (15 mi)
- Martinsville28.5 km (18 mi)
- West York30.4 km (19 mi)
- Kansas32 km (20 mi)
- Redmon32.1 km (20 mi)
Local numbers in area code 217
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