203 Area Code

Area code 203 is an area code that covers Southwest Connecticut. Area code 203 overlays the area code of 475.

Connecticut has area codes of 203, 475, 860, 959.

Counties that Use 203 Area Code

Major Cities that Use 203 Area Code

All Cities & Towns that Use 203 Area Code

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Where is 203 area code?

The following map shows the coverage of 203 area code. The coverage area is shown in green.

Area code map of the entire U.S.