Cabins · Minnesota State Parks · Minnesota
Cabins at William O Brien State Park
Minnesota State Parks · Minnesota, United States
- Units
- 5
- Sleeps
- 5–6 per unit
- Wheelchair accessible
- 3 of 5
- Drinking water
- No
- Elevation
- 840 ft
- Dark sky
- Bortle class 4
- Nearest town
- Marine on St. Croix
- Address
- 16821 O'Brien Trail North
- Phone
- 651-539-4980
About each unit
Arcola Camper Cabin · sleeps 5
Arcola Camper Cabin is a camper cabin at William O Brien State Park, sleeping up to 5 people. No kitchen inside - cooking is limited to a crockpot or coffeepot; there's an outdoor picnic table and fire ring. No indoor plumbing or bathroom - a nearby campground or visitor center has restrooms and showers. ADA accessible. Pets aren't allowed. One of three accessible camper cabins at William O'Brien (with Marine Mills and Vasa).
Copas Camper Cabin · sleeps 5
Copas Camper Cabin is a camper cabin at William O Brien State Park, sleeping up to 5 people. No kitchen inside - cooking is limited to a crockpot or coffeepot; there's an outdoor picnic table and fire ring. No indoor plumbing or bathroom - a nearby campground or visitor center has restrooms and showers. Pets aren't allowed. Only available April 1 through October 30, and unlike William O'Brien's other camper cabins, this one is not heated. No smoking, pets, or additional shelters allowed.
Marine Mills Camper Cabin · sleeps 5
Marine Mills Camper Cabin is a camper cabin at William O Brien State Park, sleeping up to 5 people. No kitchen inside - cooking is limited to a crockpot or coffeepot; there's an outdoor picnic table and fire ring. No indoor plumbing or bathroom - a nearby campground or visitor center has restrooms and showers. ADA accessible. Pets aren't allowed. One of three accessible camper cabins at William O'Brien (with Arcola and Vasa).
Otisville Camper Cabin · sleeps 6
Otisville Camper Cabin is a camper cabin at William O Brien State Park, sleeping up to 6 people. No kitchen inside - cooking is limited to a crockpot or coffeepot; there's an outdoor picnic table and fire ring. No indoor plumbing or bathroom - a nearby campground or visitor center has restrooms and showers. Pets aren't allowed. One of William O'Brien's five camper cabins.
Vasa Camper Cabin · sleeps 5
Vasa Camper Cabin is a camper cabin at William O Brien State Park, sleeping up to 5 people. No kitchen inside - cooking is limited to a crockpot or coffeepot; there's an outdoor picnic table and fire ring. No indoor plumbing or bathroom - a nearby campground or visitor center has restrooms and showers. ADA accessible. Pets aren't allowed. One of three accessible camper cabins at William O'Brien (with Marine Mills and Arcola).
Fees
$80-$90/night, Minnesota DNR's statewide camper cabin rate (this specific cabin's own price isn't broken out individually). Plus a nonrefundable reservation fee ($8 online, $10 by phone) and Minnesota's required state park vehicle permit ($35/year or $7/day).
Each unit
| Unit | Sleeps | Bedrooms | Kitchen | Bath | Heat | Power | Accessible | Pets |
|---|---|---|---|---|---|---|---|---|
| Arcola Camper Cabin | 5 | – | – | ✓ | – | |||
| Copas Camper Cabin | 5 | – | – | – | – | |||
| Marine Mills Camper Cabin | 5 | – | – | ✓ | – | |||
| Otisville Camper Cabin | 6 | – | – | – | ||||
| Vasa Camper Cabin | 5 | – | – | ✓ | – |
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 22° | 3° | -21° | 41° | 11 of 11 |
| February | 29° | 7° | -27° | 58° | 11 of 11 |
| March | 42° | 26° | -8° | 72° | 11 of 11 |
| April | 52° | 35° | 19° | 81° | 7 of 11 |
| May | 69° | 50° | 34° | 83° | 0 of 11 |
| June | 77° | 61° | 47° | 92° | 0 of 11 |
| July | 83° | 66° | 56° | 93° | 0 of 11 |
| August | 78° | 64° | 54° | 88° | 0 of 11 |
| September | 76° | 59° | 39° | 87° | 0 of 11 |
| October | 58° | 43° | 27° | 76° | 3 of 10 |
| November | 40° | 29° | 8° | 64° | 8 of 10 |
| December | 29° | 18° | -17° | 57° | 10 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Campgrounds nearby
- William O Brien State Park · Minnesota State Parks · 0 mi · 114 sites
- Lower St. Croix District · National Park Service · 2 mi · 19 sites
- Interstate State Park · Minnesota State Parks · 13 mi · 37 sites
- Interstate State Park · Wisconsin State Parks · 13 mi · 84 sites
- Willow River State Park · Wisconsin State Parks · 15 mi · 120 sites
Other cabins nearby
- Wild River State Park · Minnesota State Parks · 22 mi · 7 units
- Afton State Park · Minnesota State Parks · 26 mi · 6 units
- St. Croix State Park · Minnesota State Parks · 51 mi · 8 units
- Lake Maria State Park · Minnesota State Parks · 58 mi
- Banning State Park · Minnesota State Parks · 64 mi
All public cabins and yurts in Minnesota · Every state and province · Facts read from the operator 2026-08-26. Confirm fees, rules and current status with the operator before you go.