You would say Il paese in cui (also dove is a popular choice) abito è in campagna.
Io abito in un paese di campagna. (20 minuti fa means 20 minutes ago, did you mean to say this?)
If it's only a temporary residence, you can say Sto in un paese di campagna. Stare can also be used as a synonym for vivere/abitare, but it's considered more informal. Soggiornare, conversely, is the most formal synonym and is used for temporary residences only.
Home: vivere, abitare, stare
Holiday: stare, soggiornare
There are other options (albergare, dimorare...) but they are very rarely used.
One last note: compagnia means company! :)
Compagnia: company (social gathering)
Compagna: wife, girlfriend, female partner
Azienda: company (business)
Hope this helps!