Phường Tam Hiệp was officially established by merging the natural area and population of Xã Bình Đa, Xã Tam Hiệp, Xã Tân Hiệp, Xã Tân Mai. If you are looking for information about Bình Đa after merger, Tam Hiệp after merger, Tân Hiệp after merger, Tân Mai after merger or administrative boundary changes in this area, this is the official portal updated according to Resolution 30/2026/QH16 of the National Assembly.
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Phường Tam Hiệp
Dong Nai Centrally Governed City
📅 Effective from April 30, 2026
Merged from 4 old units
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Merged Old Units
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Key Places
🔄 Merger History
Phường Tam Hiệp was formed by merging 4 old administrative units:
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Xã Bình Đa
Đồng Nai, Biên Hòa
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Xã Tam Hiệp
Đồng Nai, Biên Hòa
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Xã Tân Hiệp
Đồng Nai, Biên Hòa
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Xã Tân Mai
Đồng Nai, Biên Hòa
Legal basis: Đề án 379/ĐA-CP năm 2025
📍 Geographical Location
Phường Tam Hiệp is located in Dong Nai Centrally Governed City, Southeast region, Vietnam.
📍 Phường Tam Hiệp, Dong Nai City
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🏭 Key Places in Phường Tam Hiệp
Phường Tam Hiệp is a hub for many important economic, tourism, and service establishments of Dong Nai City:
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❓ Frequently Asked Questions
According to Resolution 30/2026/QH16, Xã Bình Đa was merged to form Phường Tam Hiệp under the centrally governed Dong Nai City. The entire administrative boundary of the old Bình Đa is now within Phường Tam Hiệp.
The Bình Đa area (formerly belonging to Đồng Nai, Biên Hòa) now belongs to Phường Tam Hiệp. Citizens can go to the administrative headquarters of Phường Tam Hiệp to process paperwork and land procedures.
According to Resolution 30/2026/QH16, Xã Tam Hiệp was merged to form Phường Tam Hiệp under the centrally governed Dong Nai City. The entire administrative boundary of the old Tam Hiệp is now within Phường Tam Hiệp.
The Tam Hiệp area (formerly belonging to Đồng Nai, Biên Hòa) now belongs to Phường Tam Hiệp. Citizens can go to the administrative headquarters of Phường Tam Hiệp to process paperwork and land procedures.
According to Resolution 30/2026/QH16, Xã Tân Hiệp was merged to form Phường Tam Hiệp under the centrally governed Dong Nai City. The entire administrative boundary of the old Tân Hiệp is now within Phường Tam Hiệp.
The Tân Hiệp area (formerly belonging to Đồng Nai, Biên Hòa) now belongs to Phường Tam Hiệp. Citizens can go to the administrative headquarters of Phường Tam Hiệp to process paperwork and land procedures.
According to Resolution 30/2026/QH16, Xã Tân Mai was merged to form Phường Tam Hiệp under the centrally governed Dong Nai City. The entire administrative boundary of the old Tân Mai is now within Phường Tam Hiệp.
The Tân Mai area (formerly belonging to Đồng Nai, Biên Hòa) now belongs to Phường Tam Hiệp. Citizens can go to the administrative headquarters of Phường Tam Hiệp to process paperwork and land procedures.
Phường Tam Hiệp was formed from 4 old administrative units including: Xã Bình Đa, Xã Tam Hiệp, Xã Tân Hiệp, Xã Tân Mai. These units formerly belonged to Biên Hòa.
After the merger, Phường Tam Hiệp no longer belongs to any district. Dong Nai City operates on a 2-tier model: City → Ward/Commune. All former district-level units have been abolished.
Documents (Red Book, ID card, household registration) issued before April 30, 2026, in the Phường Tam Hiệp area remain legally valid until they expire or are replaced. Immediate replacement is not mandatory if there is no need.