Most black panthers live in Florida and Alabama.
However most black panthers have gone extinct in the USA.
In North Carolina as of 2011 it's believed that the black panthers in North Carolina have gone extinct although North Carolina used to have a lot of black panthers.
But I believe most of the black panthers have been hunted and killed in North Carolina and as of now there are very few black panthers living in the USA today.
Most black panthers live outside the USA and likely in the next 10 to 20 years or so black panthers in the USA will maybe be entirely extinct.
In some places Black Panthers have been killed and hunted and extinct in some areas since the 1930s.