CPS and ACS provide state FIPS code. To tie that to the two-letter state code we use, we could use the [`us` package](https://github.com/unitedstates/python-us) as: ```python two_letter_code = pd.Series(fips).apply( lambda x: us.states.lookup(str(x).zfill(2)).name ).tolist() ``` per https://github.com/unitedstates/python-us/issues/42.
CPS and ACS provide state FIPS code. To tie that to the two-letter state code we use, we could use the
uspackage as:per unitedstates/python-us#42.