Under the new requirements, the state and county codes will get reported twice: 1) under County, and 2) Census tract.
State Code - 2 numbers
County Code - 3 numbers
Tract Code - 6 numbers
Total - 11 numbers.
As reference by GTS333
State: 06
County:037
Tract: 264000
Total: 06037264000
Found the following to explain (
https://www.cubitplanning.com/data/census-tract-numbers):
Finding Census tract numbers can be difficult and time consuming. Many times, researchers will refer to a Census tract as Census Tract 7 or Census Tract 9.01. But Census Tract 7 or 9.01 doesn't uniquely identify the Census tract; in fact, there are hundreds of Census Tract 7s in the United States. A Census tract is uniquely identified by using its complete 11 digit Census tract number.
For example, Census Tract 48-201-533701 is located in Harris County, Texas. The 48 is the FIPS code for Texas; the 201 is the FIPS code for Harris County; and the 533701 identifies the specific Census Tract.