AccuZIP6 provides County Code and County Name information during the validation process while matching to the National raw data provided by the USPS. AccuZIP Inc. cannot alter the raw ZIP+4 Data.
The County FIPS code is generated from the ZIP+4 code, not the ZIP code.
Contact the Address Quality Department at the USPS if you believe their information is incorrect.
A note about adding County information
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A note about adding County information
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