Colorado GMU map: every big game unit boundary

Every Colorado game management unit, drawn as Colorado Parks and Wildlife publishes it, with its number on it. Free, on your phone or your computer, with no account.

Open the unit map All the map does

What it shows

• Every big game unit line in the state, in orange, with the unit number.
• Search by number. Type a unit number and the map goes to it.
• Tap any spot and "What is here" names the unit you are standing in, with the land manager, the elevation and the owner on the county's parcel record.
• Lay the lines over the ground you want to read: the topo map, an aerial photo, or the bare ground with the trees taken off.

Why the line matters

A Colorado big game license is good in the units printed on it and nowhere else. Many unit lines follow a road, a river or a ridge top, which reads clearly on paper and much less clearly from a truck at five in the morning. Find the line near where you plan to park and walk before the season, and know which side of it your camp, your morning spot and your pack-out are on.

Where a unit line follows a divide, the line is the top of the ridge. An animal that crosses it is in the next unit.

Use it with the numbers for each unit

Each unit has its own page here with its seasons, licenses and harvest figures: elk units and deer units. To put two or three units side by side, use the unit comparison. For how much of each unit is public, see public land by unit.

Where the lines come from

Colorado Parks and Wildlife's published big game unit boundaries. The brochure for your species is the rule: if a unit description in the brochure and a line on any map disagree, the brochure wins.