Drighlington Post Office could move 90 metres away down the road and share premises with a local convenience store.
The modernised postal service will operate from Londis on King Street and the current branch will shut, subject to a consultation.
The relocation would mean that customers could access Royal Mail services for longer, as the post office would have the same opening hours as the shop.
A six-week public consultation has now been launched on the proposal, which will see the creation of an open-plan area and self-service points. The Londis store opens from 6am-10pm seven days a week, offering customers an extra 70 hours of time to visit the postal counters as well as Sunday opening.
“We understand how important having a post office is to residents in Drighlington and we are confident that this new, modern service will meet the needs of the local community and secure services for the future,” said regional manager Suzanne Richardson.
“This modernisation is part of a major investment programme, the largest in our history.”
Residents can give their feedback until Febraury 24 ahead of a final decision. To take part, send comments by Freepost to Post Office Ltd, email firstname.lastname@example.org or call on 03457 22 33 44. There is also an online questionnaire available from www.postofficeviews.co.uk using branch code 186206. If approved, the changeover would happen in April 2016.