Overview

Last Seen: September 10, 2019
Location: Mills, Wyoming
Age: 62
Nickname: Jay
Status: Endangered missing person; remains missing as of the latest publicly available information
NamUs: MP60982

Main circumstances: Barnhill told his live-in girlfriend he was leaving to run errands. He sent several text messages after leaving but did not return home. His girlfriend reported him missing on September 12. Four days after his disappearance, Barnhill’s truck was found well off the roadway near Sheepherder Hill and Casper Mountain in Natrona County. Searches of the surrounding area failed to locate him.

Detailed Case Breakdown

John Jacob Barnhill Disappearance: What Happened to the Wyoming Man Who Vanished in 2019?

John Jacob “Jay” Barnhill was 62 years old when he disappeared from Mills, Wyoming, on September 10, 2019. What initially appeared to be an ordinary trip to run errands became a missing-person investigation after Barnhill failed to return home and his truck was later discovered abandoned in a remote area near Casper Mountain.

More than six years later, Barnhill remains missing. His disappearance is particularly puzzling because he apparently communicated by text message after leaving home, yet no confirmed trace of him has been publicly reported since that day.

Very Brief Case Summary

Last Seen: September 10, 2019
Location: Mills, Wyoming
Age: 62
Nickname: Jay
Status: Endangered missing person; remains missing as of the latest publicly available information
NamUs: MP60982

Main circumstances: Barnhill told his live-in girlfriend he was leaving to run errands. He sent several text messages after leaving but did not return home. His girlfriend reported him missing on September 12. Four days after his disappearance, Barnhill’s truck was found well off the roadway near Sheepherder Hill and Casper Mountain in Natrona County. Searches of the surrounding area failed to locate him.

John Barnhill Leaves His Mills Home

On Tuesday, September 10, 2019, John Barnhill left his home in Mills, a community adjacent to Casper in Natrona County, Wyoming.

According to published case information, Barnhill told his live-in girlfriend that he was going out to run errands. Nothing publicly reported about the stated purpose of the trip suggested he planned to disappear for an extended period.

Barnhill reportedly sent several text messages after leaving the residence. However, he never returned home.

His girlfriend reported him missing on September 12, two days after he was last seen.

Barnhill’s Truck Is Found Near Casper Mountain

The investigation took a significant turn on September 14, 2019, when authorities located Barnhill’s truck in the Sheepherder Hill/Casper Mountain area of Natrona County.

The location of the vehicle raised questions.

The truck was not simply parked alongside a commonly traveled road. Published case summaries state that it had been driven through brush and was parked well off the roadway.

The surrounding area was sparsely populated and included private property as well as land administered by the Bureau of Land Management.

Barnhill was nowhere around the vehicle.

Search Teams Focus on the Casper Mountain Area

The discovery of Barnhill’s vehicle prompted an extensive search of the surrounding terrain.

Contemporary reporting from K2 Radio said the Natrona County Sheriff’s Office was leading search efforts in the days following the discovery. Investigators planned to continue searching as weather permitted.

By September 19, cadaver dogs had also been brought into the operation. One dog was being used that Thursday morning, with two additional dogs expected to participate.

The use of cadaver dogs did not mean investigators had publicly concluded Barnhill was dead. At the time, a sheriff’s office representative declined to say that authorities suspected he was deceased.

No publicly reported search produced Barnhill or established what happened to him.

Investigators Initially Reported No Evidence of Foul Play

During the original September 2019 investigation, authorities publicly stated that they did not have evidence of foul play.

That distinction remains important. Barnhill’s unexplained disappearance and the unusual location of his truck naturally generate questions, but publicly available evidence does not establish that he was murdered or that another person caused his disappearance.

Investigators did express concern about Barnhill’s medical condition. The exact nature of that condition was not publicly specified in the sources reviewed.

What Was John Barnhill Wearing?

Barnhill was approximately 5 feet 11 inches tall and weighed about 185 pounds when he disappeared. He had graying black hair and brown eyes.

He was reportedly wearing a shirt bearing the words “Bone Daddy,” blue jeans, white sneakers and a silver watch on his left wrist.

Barnhill’s long hair was often worn in a ponytail extending down his back, secured by multiple hairbands. He had a gray mustache and may also have had a gray beard.

He normally wore eyeglasses, but case information indicates those glasses were left behind.

Other identifying characteristics include a white scar on the right side of his torso near his ribcage and a large mole on his back near his right shoulder blade.

Questions That Remain Unanswered

One of the central unanswered questions is how and why Barnhill’s truck ended up so far off the roadway near Casper Mountain.

It is also unclear from publicly available information what happened after the last known text messages were sent following his departure from home.

There has been no publicly confirmed explanation establishing whether Barnhill drove the truck to the location himself, whether he left the area on foot, or whether another person became involved.

The remote terrain also complicates the investigation. A person leaving a vehicle in that environment could potentially travel into difficult terrain, while the mixture of private and public property creates an enormous potential search area.

Those possibilities, however, remain possibilities rather than established conclusions.

Latest Information on the John Barnhill Investigation

Publicly available missing-person resources reviewed through August 2026 continue to identify John Jacob Barnhill as missing.

CaseTrace’s current Wyoming missing-person listings include Barnhill as missing from Mills, Wyoming, with a September 10, 2019 last-seen date and NamUs case number 60982.

A Wyoming missing-person compilation published more than six years after his disappearance likewise continues to list Barnhill as missing and references NamUs #60982.

A June 2026 episode of True Crime and Wine Time also revisited Barnhill’s disappearance, bringing renewed attention to the case. The episode discussed the original circumstances, vehicle discovery and search but did not report that Barnhill had been located.

No credible public information located during this review indicates that Barnhill has been found, that remains have been identified as his, or that law enforcement has announced an arrest in connection with his disappearance.

The case therefore remains an unresolved Wyoming missing-person investigation.

Someone May Still Have Information

Years passing does not necessarily eliminate the value of information in a missing-person investigation.

Someone may remember seeing Barnhill or his truck around September 10-14, 2019. Others may possess information about his activities, communications or plans before he disappeared.

Even information that appeared insignificant in 2019 could potentially help investigators reconstruct Barnhill’s final known movements.

Anyone with information should contact the appropriate Wyoming law-enforcement agency rather than attempting to investigate individuals connected with the case independently.

John Jacob Barnhill disappeared after leaving his Mills home for what was supposed to be an ordinary errand. His truck was discovered four days later in remote terrain near Casper Mountain.

Barnhill himself has never been publicly reported found.

Until evidence provides an answer, the fundamental question remains unchanged: What happened to John “Jay” Barnhill after he left home on September 10, 2019?.