Colorado's Cardinal Borders: A Compass Rose of Neighbors
Colorado — the rectangular(ish) Centennial State — shares borders with seven states. By cardinal direction:
| Direction | Bordering State(s) | Boundary Feature |
|---|
| North | Wyoming (entire), Nebraska (NE corner only) | 41°N parallel (WY); 41°N / 102°03′W meridian (NE) |
| South | New Mexico (entire), Oklahoma (SE corner only) | 37°N parallel (NM); 37°N / 102°03′W meridian (OK) |
| East | Kansas (entire) | 102°03′W meridian (25th meridian west of Washington) |
| West | Utah (entire) | 109°03′W meridian (32nd meridian west of Washington) |
📐 The "Four Corners" Nuance
At the Four Corners Monument (36°59′56″N, 109°02′43″W), Colorado touches Arizona (SW), Utah (W), New Mexico (S) — but only at a single point. Arizona and Oklahoma are not considered "bordering" in the cardinal sense (no linear boundary).
🧭 Mnemonic
Wyoming North, Kansas East, Utah West, New Mexico South — W-N, K-E, U-W, N-S.
Colorado's borders are almost entirely meridians and parallels—a surveyor's grid imposed on the Rockies.
Wanderlust World