AutoSky Skywarn State and County Code

Trying to due a install using AutoSky Skywarn for hamvoip.
I go to https:alerts.weather.gov to acquire my county code
which does not exist. Say to click on ATOM link.
Instead it ask for Long and Lat and give a different
statement using the lat and long. Will this work in replace of
the county code for this to work?

Dale KJ6IX