Bưu cục thời Đông Dương phân cấp thành 3 loại:
- Bưu cục cấp 1 tại trung tâm của đô thị, thành phố;
- Bưu cục cấp 2 tại các huyện lị;
- Bưu cục cấp 3 hay còn gọi là bưu cục nông thôn tại các vùng xa ở làng xã.
Dưới đây là danh sách các bưu cục cấp 2 ở Tonkin – Bắc Kỳ:
| Bưu cục cấp 1 | Bưu cục cấp 2 | Vùng | Thời gian |
|---|---|---|---|
| MonKay | AcKoi Ak-Hoi | Tonkin | 1890-1952 1895-1904 |
| MonKay | Ha-Coi HaCoi | Tonkin | 1930-1939 1942 |
| PhuLangThuong | AnChau An-Chau | Tonkin | 1896-1900, 1915-1946 1929-1932 |
| HaDong | BachMai | Tonkin | |
| PhuLangThuong | Bac-Le | Tonkin | 1894-1932 |
| HaGiang | Bac-Me | Tonkin | 1898-1909 |
| Tuyen Quang | Bac-Muc | Tonkin | 1899-1902 |
| MonKay | Bac-Phong-Sing | Tonkin | |
| HaGiang | Bac-Quang BacQuang Bac-Quan | Tonkin | 1897-1946 1921-1927 1928 |
| HungYen | Bambous | Tonkin | 1885-1889 |
| CaoBang | Bancra | Tonkin | 1909-1932 |
| LaoKay | BanLao | Tonkin | 1913-1916 |
| LaoKay | Ban-Nam-Coun | Tonkin | 1915-1946 |
| HungYen | Ban-Yen-Nhan | Tonkin | 1904-1953 |
| YenBay | Bao-Ha BaoHa Ba-Hoa | Tonkin | 1886-1946 1900-1928 1888-1898 |
| CaoBang | Bao-Lac BaoLac | Tonkin | 1897-1907 1909-1911 |
| LaoKay | Ba-Xat BaXat | Tonkin | 1900-1946 1900-1923 |
| ThaiBinh | Ben-Hiep | Tonkin | 1925-1931 |
| LangSon | Bi-Nhi | Tonkin | 1897-1932 |
| MonKay | Binh-Lieu | Tonkin | 1913-1932 |
| NamDinh | Bui-Chu | Tonkin | 1951-1953 |
| PhuTho | CamKhe | Tonkin | 1888-1902 |
| QuangYen | CamPha-Mine CamPhaMine | Tonkin | 1935-1955 1949-1954 |
| QuangYen | CamPha-Port CamPha Port | Tonkin | 1931-1955 1933-1938 |
| HaiDuong | CauDo | Tonkin | 1899-1905 |
| HaGiang | Chang-Poung | Tonkin | 1917-1946 |
| LaoKay | Cha-Pa Chapa | Tonkin | 1913-1946 1914-1929, 1923-1944 |
| TuyenQuang | Chiem-Hoa ChiemHoa | Tonkin | 1915-1946 1917-1930 |
| LangSon | ChiMa Chi-Ma | Tonkin | 1914-1932 1932 |
| PhuLy | Chine Chi-Ne | Tonkin | 1913-1946 1929-1943 |
| HoaBinh | ChoBo Cho-Bo | Tonkin | 1889-1899, 1893-1925 1890-1891, 1928-1944 |
| ThaiNguyen | ChoChu Cho-Chu | Tonkin | 1897-1946 1906-1925, 1929-1938 |
| TuyenQuang | Cho-Dien | Tonkin | 1925-1946 |
| NinhBinh | ChoGanh-Gare Cho-Ganh | Tonkin | 1906-1910 1921-1932 |
| BacKan | Chora Cho-ra | Tonkin | 1906-1946 1931-1942 |
| PhuLangThuong | Chu | Tonkin | 1885-1887, 1929-1946 |
| CaoBang | Coc-Pan | Tonkin | 1925-1932 |
| MongCai | Dam-Ha | Tonkin | 1922-1932 |
| BacNinh | DapCau Dap-Cau | Tonkin | 1885-1946 1885-1904, 1911-1916, 1923-1945 |
| ThaiBinh | Diem-Dien | Tonkin | 1926-1946 |
| LangSon | Diem Her | Tonkin | 1929-1932 |
| LaiChau | Dien-Bien-Phu DienBienPhu | Tonkin | 1894-1946 1923-1928 |
| MongCai | Dinh-Lap | Tonkin | 1909-1946 |
| LangSon | Dong-Dang | Tonkin | 1886-1891, 1896-1946 |
| CaoBang | Dong-Khe DongKhe | Tonkin | 1897-1946 1923-1928 |
| LangSon | Dong-Mo | Tonkin | 1927-1946 |
| PhuLangThuong | Dong-Song | Tonkin | 1885-1889 |
| HaiDuong | Dong-Trieu | Tonkin | 1893-1946 |
| HaGiang | DongVan | Tonkin | 1907-1946 |
| KienAn | Do-Son DoSon | Tonkin | 1890-1946 1907-1925, 1927-1944 |
| BacNinh | Gia-Lam GiaLam | Tonkin | 1922-1954 1950-1951 |
| BacNinh | GiaLam-Aerogare | Tonkin | |
| KienAn | Glandinerie | Tonkin | 1892-1894 |
| MongCai | Hai-Ninh | Tonkin | 1888-1889 |
| CaoBang | Ha-Lang | Tonkin | 1917-1946 |
| KienAn | Hang-Kenh | Tonkin | 1929-1954 |
| HaGiang | Hoang-Thu-Bi Hoang-Su-Phi HoangSuPhi | Tonkin | 1903-1946 1928-1942 1942 |
| QuangYen | Hoanh-Son Hoanh Son | Tonkin | 1929-1946 1929 |
| MongCai | Hoanh-Mo Hoan Mo Hoanh-Mo | Tonkin | 1909-1914, 1921-1932 1926-1927 1929 |
| KienAn | HonDau | Tonkin | 1932-1935 |
| QuangYen | Hon-Gay Hon Gay HonGay | Tonkin | 1886-1955 1949-1950 1906-1928, 1928-1944 |
| PhuTho | Hong-Hoa Hung-Hoa | Tonkin | 1885-1946 1885-1893, 1927-1943 |
| QuangYen | Huong-Bi Uong-Bi | Tonkin | 1920 1925 |
| VinhYen | Huong-Kanh | Tonkin | 1891-1893, 1900-1903 |
| QuangYen | KeBao | Tonkin | 1893-1894 |
| PhuLangThuong | Kep | Tonkin | 1888-1894 |
| HaiDuong | KeSat | Tonkin | 1884-1888 |
| CaoBang | Khao-Son | Tonkin | 1911-1946 |
| ThaiBinh | Kien-Xuong | Tonkin | 1891-1895 |
| QuangYen | LaCacBa | Tonkin | 1938, 1945 |
| NamDinh | LacQuan Lac-Quan | Tonkin | 1905-1946 1923-1945 |
| PhuLangThuong | Lam | Tonkin | Lam |
| ThaiNguyen | Lang-Hit | Tonkin | 1916-1931 |
| PhuLangThuong | Lang-Kep | Tonkin | 1885-1894 |
| HaGiang | Lao-Tchay | Tonkin | 1911-1928 |
| VinhYen | LienSon | Tonkin | 1928-1932 |
| LangSon | Loc-Binh LocBinh | Tonkin | 1908-1946 1923-1925 |
| LaoKay | Long-Po | Tonkin | 1900-1905 |
| YenBai | Luc_an-Chau Luc An Chau | Tonkin | 1897-1937 1924-1925 |
| HungYen | Luc-Dien | Tonkin | 1884-1886 |
| PhuLangThuong | Luc-Nam LucNam Luc-Nain | Tonkin | 1889-1894, 1900-1946 1901-1922 1892-1894 |
| HaGiang | Man-Mei | Tonkin | 1909-1946 |
| HaiDuong | Mao-Ke MaoKhe Mao-Khe | Tonkin | 1923-1946 1925-1934 1931-1939 |
| SonLa | Moc-Chau | Tonkin | 1940-1946 |
| MongCai | Mui-Ngoc | Tonkin | 1897-1932 |
| LaoKay | Muong-Houm MuongHoum Muong-Hum | Tonkin | 1919-1932 1927 1930-1931 |
| LaoKay | Muong-Khuong | Tonkin | 1907-1946 |
| LangSon | Na-Cham NaCham | Tonkin | 1887-1946 1894-1924, 1924-1943 |
| MongCai | NaThuoc Na-Thuoc | Tonkin | 1913-1929, 1932 1932 |
| PhuLy | Nga-Khe | Tonkin | 1929-1946 |
| BacKan | Ngan-Son NganSon | Tonkin | 1897-1946 1923-1928 |
| CaoBang | Nguyen-Binh | Tonkin | 1897-1946 |
| PhuLangThuong | Nha-Nam | Tonkin | 1897-1946 |
| KienAn | Nui-Deo | Tonkin | 1904-1955 |
| CaoBang | Nuoc-Hai | Tonkin | 1926-1935 |
| BacKan | Oho-Moi (Cho-Moi) | Tonkin | 1904-1905 |
| MongCai | Pac-Si | Tonkin | 1897-1902 |
| LaoKay | Pak-Ha PakHa | Tonkin | 1916-1946 1923-1930, 1937-1944 |
| LaoKay | Pha-Long | Tonkin | 1909-1933 |
| ThaiNguyen | Phan-Me | Tonkin | 1926-1946 |
| NinhBinh | Phat-Diem | Tonkin | 1911-1946 |
| HaGiang | Pho-Bang | Tonkin | 1920-1929, 1930-1939 |
| LangSon | Pho-Binh-Gia | Tonkin | 1897-1946 |
| LaoKay | Pho-Lu PjoLu | Tonkin | 1894-1946 1923-1933 |
| LaoKay | Phong-To Phong-Tho | Tonkin | 1909-1946 1916-1924, 1926-1943 |
| PhucYen | Phuc-Da-Phuc | Tonkin | 1907-1946 |
| PhuTho | PhuDoan | Tonkin | 1887-1946 |
| KienAn | Phu-Lien | Tonkin | 1896-1906 |
| PhucYen | PhuLo | Tonkin | 1899-1905 |
| NinhBinh | Phu-Nho Phu-Nho-Quan PhuNhoQuan | Tonkin | 1886-1890 1900-1946 1908-1923, 1924-1943 |
| HaiDuong | Phu-Ninh-Giang Phu-Ninh-Gian Ninh-Giang | Tonkin | 1884-1886, 1900-1946 1887,1901-1924 1926-1944 |
| HoaBinh | Phuong-Lam | Tonkin | 1887-1889 |
| TuyenQuang | Phu-Yen-Binh | Tonkin | 1897-1946 |
| MongCai | Pointe Pagode Pointe-Pagode | Tonkin | 1893-1932 1898-1926, 1929-1932 |
| QuangYen | Port-Wallut Port Wallut | Tonkin | 1894-1946 1930-1942 |
| HaGiang | Quang-Ba | Tonkin | 1908-1932 |
| CaoBang | Quang-Uyen | Tonkin | 1903-1946 |
| NamDinh | Quat-Lam | Tonkin | 1929-1932 |
| HoaBinh | Riviere-Noire | Tonkin | 1884-1887 |
| HaiDuong | Sept-Pagodes | Tonkin | 1896-1946 |
| CaoBang | Soc-Giang | Tonkin | 1908-1946 |
| CaoBang | Ta-Lung | Tonkin | 1897-1946 |
| CaoBang | Tamboun (Pho) | Tonkin | 1888 |
| VinhYen | Tam-Dao | Tonkin | 1908-1945 |
| SonTay | Thachat | Tonkin | 1893-1896 |
| PhuTho | Than Ba | Tonkin | 1902-1904 |
| LangSon | Thanh-Moi Than-Moi ThanMoi | Tonkin | 1885-1927 1894-1895, 1895-1910 1914-1927 |
| HaGiang | Thanh-Thuy | Tonkin | 1926-1932 |
| MongCai | Than-Poun | Tonkin | 1902-1932 |
| YenBai | Than-Quan | Tonkin | 1887-1889 |
| LangSon | That-Khe ThatKhe | Tonkin | 1886-1950 1896-1924 |
| HungYen | Thuy-Loi | Tonkin | 1923-1946 |
| MongCai | Tien-Yen TienYen Tien Yen | Tonkin | 1891-1953 1891-1896 1949-1950 |
| CaoBang | Tinh-Tuc | Tonkin | 1926-1946 |
| SonTay | Tong | Tonkin | 1928-1945 |
| MongCai | Tra-Co | Tonkin | 1924-1928, 1931-1932 |
| YenBai | Trai-Hut | Tonkin | 1891-1920 |
| CaoBang | TraLinh | Tonkin | 1903-1904, 1911-1946 |
| LaoKay | Trinh-Thuong | Tonkin | 1899-1904 |
| CaoBang | Trung-Khanh-Phu | Tonkin | 1909-1946 |
| QuangYen | Uong-Bi UongBi Huong-Bi | Tonkin | 1920-1945 1934-1943 1925 |
| SonLa | Van-Bui | Tonkin | 1892-1904 |
| HaiDuong | VanDinh Van-Dinh | Tonkin | 1915-1919, 1921-1946 1929-1944 |
| QuangYen | VangDanh | Tonkin | 1939-1946 |
| HungYen | Van-Giang | Tonkin | 1884-1886 |
| PhuTho | Van-Khe | Tonkin | 1926-1932 |
| LangSon | VanLinh Van-Linh | Tonkin | 1900-1904, 1907-1928 1929-1930 |
| NamDinh | Van-Ly VanLy | Tonkin | 1909-1946 1910-1924 |
| SonLa | Van-Yen VanYen | Tonkin | 1894-1946 1895 |
| PhuTho | VietTri Viet-Tri | Tonkin | 1885-1946 1930-1944 |
| HaGiang | Vinh-Thuy VinhThuy | Tonkin | 1897-1946 1907 |
| HaGiang | Xin-Man | Tonkin | 1911-1932 |
| HaGiang | Yen-Binh-Xa | Tonkin | 1907-1925 |
| HaGiang | Yen-Minh | Tonkin | 1907-1919, 1925-1932, 1937-1946 |