Question: how to legally change your last name in colorado?
Answer: Step 1 – Background Check. ... 
Step 2 – Petition for Change of Name. ... 
Step 3 – Order for Publication for Change of Name (not required if above age 70) ... 
Step 4 – Public Notice of Petition for Change of Name (not required if above age 70) ... 
Step 5 – Final Decree for Change of Name.