Hunt code E-F-231-O2-R: 2026 Colorado cow elk, 2nd rifle

E-F-231-O2-R (printed on a license as EF231O2R) is a limited cow elk rifle license for the 2nd rifle season, October 24, 2026 to November 1, 2026, valid in units 11, 12, 13, 23, 24, 25, 26, 33, 34, 131, 211 and 231.

What the code means

Part	Meaning
E	Species: elk
F	Sex: cow
231	Hunt area number. It names the license, not always a single unit: the valid units are listed below
O2	Season: 2nd rifle
R	Method: rifle

Season dates and units

Dates: October 24, 2026 to November 1, 2026
Valid in: unit 11, unit 12, unit 13, unit 23, unit 24, unit 25, unit 26, unit 33, unit 34, unit 131, unit 211, unit 231
How it is issued: limited: issued through the draw, with any left over sold afterwards

Read from the 2026 Colorado Big Game brochure. Your license and the current brochure are the authority: check both before you hunt.

How 2nd rifle elk hunters did there in 2024

Unit	Hunters	Animals taken	Success
Unit 11	582	102	18%
Unit 12	482	160	33%
Unit 13	219	86	39%
Unit 23	425	26	6%
Unit 24	482	23	5%
Unit 25	394	42	11%
Unit 26	275	23	8%
Unit 33	743	98	13%
Unit 34	230	30	13%
Unit 131	207	34	16%
Unit 211	457	95	21%
Unit 231	300	26	9%

All 2nd rifle elk hunters in each unit, every license type together, from Colorado Parks and Wildlife's 2024 harvest survey. These are estimates, and they are not specific to this hunt code.

Holding EF231O2R?

FilledTag builds one exact plan for this tag: where to park, camp and sit in units 11, 12, 13, 23, 24, 25, 26, 33, 34, 131, 211 and 231, with every pin checked against public land and road rules.

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Other elk codes for these units

E-F-011-O1-R (cow, 1st rifle) · E-F-011-O2-R (cow, 2nd rifle) · E-F-011-O3-R (cow, 3rd rifle) · E-F-011-O4-R (cow, 4th rifle) · E-F-012-O2-R (cow, 2nd rifle) · E-F-012-O3-R (cow, 3rd rifle) · E-F-025-O1-R (cow, 1st rifle) · E-F-025-O2-R (cow, 2nd rifle) · E-F-025-O3-R (cow, 3rd rifle) · E-F-025-O4-R (cow, 4th rifle) · E-F-033-O2-R (cow, 2nd rifle) · E-F-033-O3-R (cow, 3rd rifle)