The figure below shows the state plane zones for the Northwest area.
| NAD 27 / 83
|
| Zone Name |
Map Code |
Zone ID
|
| Idaho East
|
| Idaho Central
|
| Idaho West
|
| Montana North
|
| Montana Central
|
| Montana South
|
| Oregon North
|
| Oregon South
|
| Washington North
|
| Washington South
|
| Wyoming I
|
| Wyoming II
|
| Wyoming III
|
| Wyoming IV
|
|
| ID_E
|
| ID_C
|
| ID_W
|
| MT_N
|
| MT_C
|
| MT_S
|
| OR_N
|
| OR_S
|
| WA_N
|
| WA_S
|
| WY_E
|
| WY_EC
|
| WY_WC
|
| WY_W
|
|
| 1101
|
| 1102
|
| 1103
|
| 2501
|
| 2502
|
| 2503
|
| 3601
|
| 3602
|
| 4601
|
| 4602
|
| 4901
|
| 4902
|
| 4903
|
| 4904
|
|
| NAD 83 Zone Changes
|
|
|
|
|
| NAD 83 Name Changes
|
| Wyoming East
|
| Wyoming East Central
|
| Wyoming West Central
|
| Wyoming West
|
|
|
|
| NAD 83 Boundary Changes
|
| Washington North
|
| Washington South
|
|
|
|
