Connecticut Phone Numbers
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Connecticut's 203 area code serves the Greater New Haven & Bridgeport areas. It was established in 1947 as Connecticut's first area code.
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The 475 area code covers parts of Connecticut and is an overlay of 203 and 860, meaning locals may need to dial 10-digit numbers to complete calls.
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860 covers most of Connecticut and was created in 1995 when 203 was split.
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Area code 959 is Connecticut's newest area code. It was introduced in August 2014 to help meet increasing demands for telephone numbers in the state.