How long can I live with colon cancer?

Depends on stage etc. Will depend on the stage, age, respond to therapy, other biomarkers /prognostic markers/ biology of the cancer, your overall condition etc. According to the seer- 5 year survival rate for localized (confined to primary site) is 89.9%; with regional (spread to regional lymph nodes) - is about 69.6% and with distant (cancer has metastasized) is about11.9%. Discuss in detail with oncologist.
Survival varies. Survival rate statistics vary based on the stage of diagnosis. These are only estimates, not truly how long you will live. All of this should be discussed in detail with your physicians.