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Sinclair is located six miles east of Rawlins on Interstate 80 and home to the Sinclair Oil Refinery. Originally known as Parco--named after the Producers & Refiners Corporation, the town was built around the refinery from 1922-1923. A large fountain, erected in 1927 to honor Parco's founder, Frank E. Kistler, and several buildings styled in original Spanish Colonial architecture form the historic district. Sinclair is widely recognized for it's access to Semiinoe Reservoir, Seminoe State Park, and the Sinclair Public Golf Course. Residents and visitors also enjoy the museum, park, Parco/Sinclair Historical Theatre and dining at famed Su Casa Cafe.

Public Education

Students in Sinclair attend public schools in Rawlins. Carbon County School District #1 includes: Rawlins Elementary (K-5), Rawlins Middle School (6-8), Rawlins High School (9-12) and Cooperative High (9-12). Rawlins High School has a graduation rate of 91% ; Cooperative High has a graduation rate of 30%.

The cost of living in Sinclair is 12.9% lower than the U.S. average.


Households in Sinclair earn a median yearly income of $90,178. 45.4% of the households earn more than the national average each year. Household expenditures average $80,614 per year.


71.26% of the people in Sinclair are homeowners. The median home cost in Sinclair is $173,500. Homes here have appreciated in value by 67.7% over the last 10 years. The average rent for a 2-bedroom dwelling is $930/month.

Wyoming Business Council and Best Places.


Memorial Hospital of Carbon County is a 25-bed critical access hospital serving an area of approximately 7,000 square miles in Wyoming. A community trauma center adjacent to the Interstate-80 corridor, physician staffed 24 hours a day, seven days a week, our Emergency Room treats five-to-six-thousand patients on an annual basis and services two ambulance providers in the county. The main hospital, along with family practice clinics in Rawlins serve the Sinclair community.

Carbon County Public Health, located in Rawlins, WY, monitors public health risks, coordinates Rawlins agencies responding to public health threats, and enforces Wyoming public health standards. As a Department of Public Health (DPH), the department works to prevent the spread of diseases, promote healthy behaviors, and ensure a clean water supply. The Health Department also provides access to Carbon County public records.

Did you know?

PARCO Oil Refinery was acquired by Sinclair Consolidated Oil Corporation in 1942. The refinery and town were then renamed Sinclair.

Did you know?

The Parco (Sinclair) historic district is listed on the National Register of Historic Places.

Did you know?

On October 9th, 1924, the American flag was raised in Parco (now Sinclair). It was over 100 feet high, and it was the tallest flagpole in Carbon County at that time.

Recreation and culture

Things to Do

Fish the Miracle Mile

The “Miracle Mile” is the 7-mile stretch of the North Platte River between the Kortes Dam below Seminoe Reservoir and the headwaters of Pathfinder Reservoir. Trophy-size rainbow and brown trout thrive in these waters and can weigh between 5 and 10 pounds.

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Fort Steele Historic Site

This frontier Army post, which served as a hub for both the military and Wyoming’s lumber and livestock industries, is located just off I-80 at Exit 228. Many of the foundations are visible but very few structures are intact.

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Parco/Sinclair Museum

Relive the past of Parco/Sinclair through memorabilia and artifacts housed in the original First National Bank of Parco (now Town Hall). The museum is open year round and is free to the public.

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Seminoe Reservoir

With over 20,000 acres of water and 180 miles of shoreline, Seminoe Reservoir is a great place for camping, boating, and fishing for rainbow, brown and cutthroat trout and ever abundant walleye.

Seminoe State Park

Located 30 miles north of Sinclair, on the northwest side of the reservoir, this state park is surrounded by scenic views. Campsites are by reservation only.

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Sinclair Golf Course

9-hole semi-private course. Season: early-May – late-Sept. Carts for rent.

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Sinclair Historic District

Listed on the National Register of Historic Places, the district includes a fountain, park, the Sinclair Parco Theatre, and several buildings styled in original Spanish Colonial architecture. A booklet on the history of Sinclair is available for purchase at the Townhall.

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