Where Is 840 Area Code?
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Database Updated: May 9, 2025
Cities in 840 Area Code
Counties in 840 Area Code
Prefix Codes for Area Code 840
- (840) 200
- (840) 201
- (840) 202
- (840) 203
- (840) 204
- (840) 205
- (840) 206
- (840) 207
- (840) 208
- (840) 209
- (840) 210
- (840) 212
- (840) 215
- (840) 216
- (840) 219
- (840) 222
- (840) 234
- (840) 252
- (840) 300
- (840) 333
- (840) 336
- (840) 345
- (840) 356
- (840) 400
- (840) 444
- (840) 465
- (840) 466
- (840) 500
- (840) 587
- (840) 588
- (840) 600
- (840) 666
- (840) 677
- (840) 688
- (840) 699
- (840) 777
- (840) 788
- (840) 799
- (840) 800
- (840) 837
California Area Codes