Head Post Office vs Sub Post Office vs Branch Office: Key Differences

When searching for a postal code, you will notice post office classifications like HO, SO, and BO. Each serves a distinct administrative role.

1. Head Post Office (HO / GPO)

The Head Post Office (or General Post Office in major cities) is the top administrative and financial authority for a postal division. All accounts and major logistics in a district flow through the HO.

2. Sub Post Office (SO)

Sub Post Offices are established in towns, urban neighborhoods, and industrial centers. They handle daily Speed Post booking, parcel delivery, banking, and public queries.

3. Branch Post Office (BO)

Branch Offices are rural counters managed by Gramin Dak Sevaks (GDS). They provide essential mail collection, small savings schemes, and delivery to village households.