Most listings are in the $10's per square foot per year. The Mississippi region is going through a a boost in rates. In the last 3 months, the median rate rose $1 per sqft per year. That's a 4% increase in rent.
In the last 90 days, 136 listings have come on the market, so you'll want to check back regularly for new listings. About 116% of the available space in the Mississippi 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 available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,700 sqft. Most buildings in this area are around 1 floors. Most buildings in this market were built in 0 and are Class B.