Wyoming ER wait times by hospital
How long a typical emergency room visit lasts at 22 Wyoming hospitals, from arrival to going home, ranked shortest to longest.
In an emergency, call 911. These are yearly medians, not live wait times. Don't pick an ER from this list when someone needs help now.
Wyoming median
2 hr
−28 min vs US US median is 2 hr 28 min
Under 2 hours
10 ERs
0 take 4 hours or more
Wyoming emergency rooms ranked by median visit time
Times are for patients treated and sent home, not admitted. The bar shows each ER against the slowest in the state; the tick marks the Wyoming median.
How to read this list
Each time is the median for a full year, so half of visits were shorter and half longer. Busy hospitals treat sicker patients, so a longer time is not by itself a mark against a hospital. "Left before seen" is the share of patients who walked out before a clinician saw them. How this measure works.
Showing all 22 hospitals
| # | Hospital | Median visit | Left before seen | ER volume | CMS rating |
|---|---|---|---|---|---|
| 1 | North Big Horn Hospital DistrictLovell 0% left before seen Low volume ★ 4/5 CMS | 58 min 1 hr 2 min faster | 0% | Low | |
| 2 | South Big Horn County Critical Access HospitalBasin 0% left before seen Low volume | 1 hr 20 min 40 min faster | 0% | Low | Not rated |
| 3 | Powell Valley HospitalPowell 0% left before seen Low volume ★ 4/5 CMS | 1 hr 23 min 37 min faster | 0% | Low | |
| 4 | Memorial Hospital of Carbon CountyRawlins 0% left before seen Low volume | 1 hr 43 min 17 min faster | 0% | Low | Not rated |
| 5 | St Johns Medical CenterJackson 0% left before seen Low volume ★ 5/5 CMS | 1 hr 49 min 11 min faster | 0% | Low | |
| 6 | Evanston Regional HospitalEvanston 0% left before seen Low volume | 1 hr 50 min 10 min faster | 0% | Low | Not rated |
| 7 | Star Valley Medical CenterAfton | 1 hr 51 min 9 min faster | Not reported | Not reported | Not rated |
| 8 | South Lincoln Medical Center - CAHKemmerer 0% left before seen Low volume | 1 hr 51 min 9 min faster | 0% | Low | Not rated |
| 9 | Memorial Hospital of Converse CountyDouglas 1% left before seen Low volume ★ 4/5 CMS | 1 hr 54 min 6 min faster | 1% | Low | |
| 10 | Sheridan Memorial HospitalSheridan 0% left before seen Low volume ★ 3/5 CMS | 1 hr 54 min 6 min faster | 0% | Low | |
| 11 | Community HospitalTorrington 0% left before seen Low volume ★ 2/5 CMS | 2 hr At state median | 0% | Low | |
| 12 | Washakie Medical CenterWorland 0% left before seen Low volume ★ 4/5 CMS | 2 hr At state median | 0% | Low | |
| 13 | Platte County Memorial HospitalWheatland 1% left before seen Low volume ★ 4/5 CMS | 2 hr 3 min 3 min slower | 1% | Low | |
| 14 | Crook County Medical Services DistrctSundance | 2 hr 10 min 10 min slower | Not reported | Not reported | Not rated |
| 15 | Cody Regional HealthCody ★ 3/5 CMS | 2 hr 18 min 18 min slower | Not reported | Not reported | |
| 16 | Ivinson Memorial HospitalLaramie 0% left before seen Low volume ★ 3/5 CMS | 2 hr 22 min 22 min slower | 0% | Low | |
| 17 | Sagewest Health CareRiverton 2% left before seen Low volume ★ 2/5 CMS | 2 hr 25 min 25 min slower | 2% | Low | |
| 18 | Hot Springs County Memorial HospitalThermopolis 0% left before seen Low volume ★ 3/5 CMS | 2 hr 28 min 28 min slower | 0% | Low | |
| 19 | Memorial Hospital Sweetwater CountyRock Springs 1% left before seen Low volume | 2 hr 30 min 30 min slower | 1% | Low | Not rated |
| 20 | Campbell County Memorial HospitalGillette 1% left before seen Medium volume ★ 3/5 CMS | 3 hr 1 hr slower | 1% | Medium | |
| 21 | Wyoming Medical CenterCasper 2% left before seen Medium volume ★ 2/5 CMS | 3 hr 10 min 1 hr 10 min slower | 2% | Medium | |
| 22 | Cheyenne Regional Medical CenterCheyenne 1% left before seen Medium volume ★ 3/5 CMS | 3 hr 11 min 1 hr 11 min slower | 1% | Medium |
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Questions about Wyoming ER wait times
Which Wyoming ER has the shortest wait?
North Big Horn Hospital District in Lovell, with a median visit of 58 min. South Big Horn County Critical Access Hospital in Basin is next at 1 hr 20 min.
Which Wyoming ER has the longest wait?
Cheyenne Regional Medical Center, at 3 hr 11 min. The busiest emergency departments tend to have the longest visits because they treat more patients and more complex cases.
How long is the average ER visit in Wyoming?
The median is 2 hr, 28 min shorter than the US median of 2 hr 28 min. 10 of 22 Wyoming ERs come in under two hours and 0 take four hours or more.
Are these live wait times?
No. They are 12-month medians for patients who were treated and sent home, published by CMS. They show what is typical, not what is happening tonight. In an emergency, call 911.
ER wait times in neighboring states
Source: CMS Hospital Outpatient Quality Reporting, measure OP-18b (median time from ED arrival to departure for discharged patients), published July 2026. Updated when CMS publishes new data.
Hospitals with too few cases to report are not listed; they still have a page in the Wyoming hospital directory. Campuses that CMS reports under one facility number appear once. Not affiliated with CMS.