On average, listings lease in the $10's per square foot per year. The Wyoming region is experiencing a a boost in rates. In the last 3 months, the median rate went up $17 per sqft per year.
In the last 90 days, 8 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. About 50% of the available space in the Wyoming are subleases, so you might be able to sign a shorter term by taking over a previous lease. There aren't many listings below 2,000 square feet on the market, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,330 sqft. Most buildings in this market are around 1 stories. Most buildings in this market were built in 1965 and are Class B.