Deer unit 20A, South Dakota: licenses, harvest and hunting land
GFP's West River deer unit 20A is Corson. For 2026 GFP lists 600 resident and 48 nonresident licenses here in 3 license types. In 2025, by GFP's projection, hunters took 312 deer in unit 20A: 220 white-tailed and 93 mule deer, and 555 residents named it as their first choice in the first drawing.
Data updated October 2026. Harvest and first-choice applicants: GFP harvest projections, 2020 to 2025. Licenses and seasons: GFP 2026 application. Land: GFP map layers.
| GFP's description | Corson |
|---|---|
| Counties | Corson |
| Season | West River deer, November 14-29, 2026 |
| Licenses, 2026 | 600 resident, 48 nonresident |
| Deer taken, 2025 | 312 (GFP projection) |
| First-choice resident applicants, 2025 | 555 |
| First draw, 2026 | May 27 to June 23, 2026 |
How many deer licenses does unit 20A have in 2026?
600 resident and 48 nonresident licenses, by GFP's 2026 application.
| Type | What the license allows | Resident | Nonresident |
|---|---|---|---|
| 01 | one any deer | 200 | 16 |
| 03 | one any antlerless deer | 50 | 4 |
| 11 | one any whitetail deer | 350 | 28 |
Source: GFP 2026 west river deer application.
How many deer are taken in unit 20A?
GFP projects 312 deer were taken in unit 20A in 2025, 30% of them mule deer, from 648 licenses sold. That is 4% fewer than in 2020. The most in these years was 556 in 2023, the fewest 312 in 2025. By license type, GFP's hunter success ran from 53% (type 01) down to 45% (type 03).
| Year | Deer taken | Bucks | Does and fawns | White-tailed | Mule deer | Licenses sold | First-choice resident applicants |
|---|---|---|---|---|---|---|---|
| 2025 | 312 | 267 | 46 | 220 | 93 | 648 | 555 |
| 2024 | 472 | 279 | 194 | 373 | 100 | 755 | 522 |
| 2023 | 556 | 359 | 198 | 453 | 104 | 755 | 528 |
| 2022 | 467 | 294 | 172 | 390 | 76 | 584 | 558 |
| 2021 | 454 | 331 | 123 | 380 | 74 | 572 | 908 |
| 2020 | 325 | 301 | 25 | 245 | 81 | 486 | 571 |
Sources: GFP, 2025 West River Firearm Deer harvest report; GFP, 2024 Annual Report, Big Game Harvest Projections (Game Report 2025-07); GFP, 2023 Annual Report, Big Game Harvest Projections (Game Report 2024-04); GFP, 2022 Annual Report, Big Game Harvest Projections (Game Report 2023-05); GFP, 2021 Annual Report, Big Game Harvest Projections (Game Report 2022-08); GFP, 2020 Annual Report, Big Game Harvest Projections (Game Report 2021-12). GFP rounds each column of its projection.
Each license type in 2025
The license with the most first-choice applicants for each license was type 01: 456 resident applicants for 200 resident licenses.
| Type | License | Resident first-choice applicants | Resident licenses available | Resident licenses sold | Nonresident first-choice applicants | Nonresident licenses available | Hunter success | Deer taken |
|---|---|---|---|---|---|---|---|---|
| 01 | one any deer | 456 | 200 | 201 | 88 | 16 | 53% | 115 |
| 03 | one any antlerless deer | 3 | 50 | 49 | 1 | 4 | 45% | 24 |
| 11 | one any whitetail deer | 96 | 350 | 350 | 47 | 28 | 46% | 173 |
Licenses sold can include later drawings and leftovers.
When is deer season in unit 20A in 2026?
November 14-29, 2026; antlerless-only tags also December 12-20; the first draw closed June 23, 2026 (GFP 2026 west river deer application). Every season's dates are on the South Dakota page.
What public land is in the county of unit 20A?
For the whole county, as GFP publishes no unit lines:
| County | Walk-In and CREP acres | Game production area acres | School and public land acres | Federal land acres |
|---|---|---|---|---|
| Corson County | 79,323 | 316 | 23,332 | 45,194 |
Game production areas in Corson County: C.C. Lee GPA (316 acres, Corson).
Questions hunters ask
How many deer licenses are there in unit 20A for 2026?
GFP's 2026 application lists 200 resident and 16 nonresident "one any deer" licenses (type 01), 50 resident and 4 nonresident "one any antlerless deer" licenses (type 03) and 350 resident and 28 nonresident "one any whitetail deer" licenses (type 11) for unit 20A.
How many deer are taken in unit 20A?
GFP projects 312 deer were taken in unit 20A in 2025, 220 white-tailed and 93 mule deer. In 2020 the figure was 325. The projection comes from GFP's survey of license holders.
Is unit 20A mostly white-tailed or mule deer?
White-tailed deer, by GFP's 2025 projection: 93 mule deer and 220 white-tailed deer of the 312 taken; in 2020, 81 of 325 were mule deer.
What county is deer unit 20A in?
GFP describes unit 20A as "Corson", in Corson County. GFP's interactive hunting unit map shows the exact line.
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Where these numbers come from
- Harvest, licenses sold and first-choice applicants: GFP, 2025 West River Firearm Deer harvest report; GFP, 2024 Annual Report, Big Game Harvest Projections (Game Report 2025-07); GFP, 2023 Annual Report, Big Game Harvest Projections (Game Report 2024-04); GFP, 2022 Annual Report, Big Game Harvest Projections (Game Report 2023-05); GFP, 2021 Annual Report, Big Game Harvest Projections (Game Report 2022-08); GFP, 2020 Annual Report, Big Game Harvest Projections (Game Report 2021-12).
- 2026 licenses, seasons and draws: GFP 2026 west river deer application.
- Land: GFP public hunting atlas layers (Walk-In Areas, CREP, school and public land, federal land) and GFP Managed Lands. County lines: U.S. Census Bureau 2024.
FilledTag is not part of South Dakota Game, Fish and Parks. Numbers are copied from GFP or measured from the maps it publishes; nothing on this page is estimated by FilledTag.