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only one telephone area code in a sentence

1. As of November 2014, the state's unemployment rate was 6.6%. As of 2018, it is one of 14 U.S. states that still have only one telephone area code.

2. As of November 2014, the state's unemployment rate was 6.6%. As of 2018, it is one of 14 U.S. states that still have only one telephone area code.