The Shocking Origin of Casper's Name

If you have ever wondered why Casper, Wyoming is called Casper, the real story is braver, sadder, and a little more accidental than most people realize. It comes down to a young soldier's courage, a frontier town's persistence, and one famous spelling mistake. The Alisha Collins Real Estate Team helps people relocate to Natrona County every year, and this piece of local history is one many longtime residents have never heard in full. If you are getting to know the area, our Wyoming relocation guide and the Casper area page are good starting points.

In the 1860s, this land was part of the Oregon Trail, a crossroads for settlers, traders, and Native tribes, and a dangerous one. The U.S. Army built small forts along the North Platte River to protect wagon trains and telegraph lines. One was Platte Bridge Station, just a few miles from where modern Casper stands.

In 1865, a 20-year-old Army officer named Lieutenant Caspar Collins was stationed nearby. On July 26 of that year, Cheyenne and Lakota Sioux warriors launched an attack near the station while defending their lands against U.S. military expansion. Lt. Collins volunteered to lead a rescue mission even though he was outnumbered, and he was killed that day at just 20 years old. A year later, the Army built a new fort nearby and named it Fort Caspar in his honor, with his name spelled correctly, with an A.

So if the fort was Fort Caspar, why is the city spelled Casper with an E? That is one of the most famous typos in Wyoming history. When the fort was abandoned in the late 1860s, a small settlement grew around it. As the town became official, someone, a clerk, a mapmaker, or a postal worker, wrote Casper instead of Caspar. One letter off, and no one corrected it.

By the time anyone noticed, the maps, signs, and official documents had already gone out. Instead of fighting it, the townspeople embraced the error. Casper, with an E, became official, the kind of thing that could only happen in the rough-and-ready early days of Wyoming.

By the 1880s the old military post was gone, but the Chicago and North Western Railway pushed its line through central Wyoming and the settlement near the river became a key stop for trade and travel. The North Platte River provided water and the plains offered open range for livestock. When oil was discovered in Salt Creek just north of town, Casper became the heart of Wyoming's energy industry, and refineries, railroads, and businesses followed.

Today Casper is home to around 60,000 people and still keeps a small-town feel. You can hike or ski on Casper Mountain in the morning, grab lunch downtown, and fish the North Platte in the evening without leaving town. For more on what that daily life looks like, see a few surprising reasons to call Casper home and what community and outdoor access here really look like.

When you live here, Wyoming history is not something that sits in a museum. Knowing the city was named for a 20-year-old lieutenant who gave his life is a reminder that courage and community sit at the core of the place. You can still visit the reconstructed Fort Caspar Museum near the original site along the North Platte River, walk through the stockade, and see artifacts from the Oregon Trail.

Whether you are relocating from a bigger city or just curious, understanding a place makes it easier to picture your life in it. Our overview of what people get wrong about Casper and our guide to moving to Casper pick up where this history leaves off.

Casper's name may have started with a mistake, but the community that grew from it was anything but accidental. If you want to learn more about life here or start a home search, my team would love to help you find your place in the next chapter. Reach out and let's talk about it.