The typical asking rate per listing is in the $10's per square foot per year. The Marion County submarket is going through a an increase in rates. In the last 3 months, the median rate went up $15 per sqft per year.
In the last 90 days, 3 listings have been listed, which means office spaces are probably leasing quickly. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
Even though the median size is 2,830 sqft, there are still 0 leases below 2,000 sqft.