Units / Wyoming / Deer area 21

Thunder Basin · Deer area 21 · Wyoming

Deer hunt area — its own geography, not the elk area with the same number. Public land, access, and deer harvest below are computed for this boundary.

Deer area 21Full map — ownership, roads, wind →

Public hunting land

18%

98,718 ac of 545,186 ac

Landlocked public

6,047 ac

public you can't legally reach

>1 mi from a road

of public · 5,169 ac

Walk-in access

3,614 ac

private land opened to hunting

mule deer · 2025

44.6% success

125 taken by 280 hunters · 1,079 days afield

118 bucks · 4 does · 3 fawns

Res 38% · NR 56% success

mule deer hunter success · 2021–2025 · 48% → 45%

Plan it

See it on the map →

Wyoming deer draw odds →

Same number, different ground: Elk area 21 →

OpenHunt for Android is on Google Play — offline packs, GPS tracks, same account. Send it to your phone →

Terrain — this boundary, not the elk area’s

Elevation4,150–5,160 ft

Median elevation4,650 ft

Median slope3°

Where the ground sits

4,150 ft5,160 ft

Tap or hover the bars for each elevation band

Slope mix

Which way the slopes face

N 23%

E 30%

S 20%

W 27%

Share of ground steeper than 5° — flat ground has no facing

North slopes hold shade, cover and snow; south slopes open first.

USGS 3DEP 1 arc-second (30 m), slope at native resolution in a local metric projection, sampled on a 200 m grid. See the code →

Nearby deer deer areas

Upton-Four Horse · Deer area 8 · 27% public Pumpkin Buttes · Deer area 19 · 14% public Keyhole · Deer area 3 · 10% public Rochelle Hills · Deer area 10 · 54% public

Boundaries from the Wyoming Game and Fish Department deer hunt-area layer; ownership from USGS PAD-US; access from the state walk-in program; roads from OSM + MVUM. Same open formulas as every unit page — the methodology is published and the code is open.