Law Office of Baoqin Wang | Baoqin Wang
Generally speaking you will be safe to stay outside for less than 6 months. If you stay more than 6 months, it is recommended that you apply for re-entry permit, which will allow you to re-enter US after prolonged stay outside. However, re-entry permit itself is not a guarantee. You may still be asked to provide evidence that you have not abandoned your permanent residency if you stay outside for too long.
Answer Applies to: Oregon
Law Office of Immigration & International Trade Law | Linda Liang
You can live outside of the country 6 months in a year.
Answer Applies to: Florida