With Data for 2021 | Release Date:
February 25, 2022 | Next Release Date:
Discontinued
Notice: County Codes are no longer required for Form EIA-23L. The February 2022 release was the final County Code Master List.
The County Code Master List (CCML) provides the EIA standard county name spellings and codes for use in the Form EIA-23L, Annual Report of Domestic Oil and Natural Gas Reserves.
Oil and Gas County Code Master List 2021
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