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Colorado Posting Laws: How to Post Land

Colorado's posting rule is mainly about unimproved or apparently unused land. In plain words, if land is not fenced or built up, signs help show that entry is not allowed. The statute sets a spacing number and an option for a clear entrance. This guide explains how to use that.

What the law asks for on signs

The definition of entering unlawfully in C.R.S. 18-4-201 covers unimproved, apparently unused land. For that land, notice by signs is one route. The text we checked sets no letter height, no minimum sign size, and no owner-name rule. Fenced or enclosed land does not need signs for notice.

Spacing and placement

Signs go at intervals of not more than 440 yards or, if there is a readily identifiable entrance, at that entrance. A distance of 440 yards is 1,320 ft, or one-quarter mile. On a long boundary that means many signs, so mark gates, track entrances and any spot where people already cross.

Hunting land and permission

Section 33-6-116 makes hunting, fishing and trapping on private land without permission unlawful whether or not the land is posted, according to a summary we used. We did not read the exact text. A sign is still a clear way to tell people what you expect, but that statute does not depend on it.

Practical tips

Colorado winters bury low signs and sun bleaches them, so mount signs where drifts will not reach and check them each spring. Put a sign at every readily identifiable entrance, even when your count along the boundary already seems enough. Keep dated photos as a record.

Questions about posting land in Colorado

How far apart should Colorado no trespassing signs be?

Colorado's definition for unimproved, apparently unused land asks for signs at intervals of not more than 440 yards, which is 1,320 ft. If there is a readily identifiable entrance, signs at that entrance can serve instead.

Do I have to post fenced land in Colorado?

The statute text we read says fenced or enclosed land does not need signs for notice. The posting rules apply to unimproved or apparently unused land. Even so, many owners add a sign at the gate. Read C.R.S. 18-4-201 for the current wording.

Can people hunt on unposted private land in Colorado?

According to a summary we used, section 33-6-116 makes hunting, fishing or trapping on private land without permission unlawful whether or not the land is posted. We did not read the exact text, so check the statute directly.

This guide explains the law in plain words; it is not legal advice. We read the statute text on 2026-10-24. Laws change: check the current text here or ask your county or state wildlife agency.

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