PO | County | Dates | Comments |
| DAIRY | Owyhee | 1887-1906 | |
| DAIRY CREEK | Oneida | 1918-1927 | |
| DALE | Adams | 1888-1907 | |
| 1908-1910 | |||
| DALE | Bannock | 1870-1874 | |
| DANIELS | Oneida | 1900-1906 | |
| 1914-1935 | |||
| DARBY | Teton | 1900-1902 | |
| DARLINGTON | Butte | 1902-1972 | was ANTELOPE |
| DAVIES | Elmore | 1895-1896 | was GLEN DAVIES |
| DAYTON | Franklin | 1900-Date | was CARD |
| DE LAMAR | Owyhee | 1889-1942 | |
| DEADWOOD | Valley | 1944-1948 | SPO 1944-1946 |
| DEARY | Latah | 1907-Date | was ANDERSON |
| DECLO | Cassia | 1917-Date | |
| DECORAH | Adams | 1901-1903 | |
| DECRAENE | Jefferson | 1916-1917 | |
| DEEP CREEK | Twin Falls | 1909-1913 | |
| DEHLIN | Bonneville | 1917-1921 | |
| 1922-1925 | |||
| DELAGE | Shoshone | 1917-1924 | renamed ADAIR |
| DELAINE | Owyhee | 1899-1900 | was SUCKER in Oregon |
| DELMORE | Oneida | 1910-1913 | |
| DELTA | Shoshone | 1885-1912 | |
| DEMPSEY | Bannock | 1895-1915 | renamed LAVA HOT SPRINGS |
| DENT | Clearwater | 1896-1954 | |
| DENVER | Idaho | 1892-1914 | |
| DESMET | Benewah | 1890-Date | |
| DEWEY | Owyhee | 1896-1911 | |
| DIANA MINES | Boise | 1916-1917 | |
| DICKEY | Custer | 1885-1934 | |
| DIETRICH | Lincoln | 1909-1972 | |
| DINGLE | Bear Lake | 1890-1992 | now CPO |
| DIXIE | Canyon | 1878-1879 | |
| DIXIE | Idaho | 1896-1960 | now CPO |
| DONIPHAN | Blaine | 1886-1905 | |
| DONNELLY | Valley | 1914-Date | |
| DOVER | Bonner | 1910-Date | was WELTY |
| DOWNEY | Bannock | 1894-Date | |
| DRAKE | Cassia | 1882-1882 | |
| DRIGGS | Teton | 1894-Date | |
| DRUMMOND | Fremont | 1911-1961 | |
| DRY CREEK | Twin Falls | 1873-1874 | |
| DRYDEN | Idaho | 1905-1907 | |
| DUBLIN | Lewis | 1901-1908 | |
| DUBOIS | Clark | 1892-Date | |
| DUBOIS | Washington | 1890-1891 | |
| DUDLEY | Kootenai | 1895-1957 | |
| DUFORT | Bonner | 1902-1908 | |
| DUNNIGAN | Boise | 1901-1902 | |
| DURET | Gooding | 1893-1900 | |
| DURKEEVILLE | Nez Perce | 1863-1864 | |
| DUTHIE | Shoshone | 1931-1960 |
Contributed 2021 Oct 05 by Mark Metkin
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