I live in Springfield, and my personal residence is 0.4%, but it really depends largely on your policy. Different amounts of liability coverage will change your premium, but not by much. The biggest thing that will decrease your premium is your deductible. Ours is $5000. Pretty steep, but it saves us a lot in premium. Insurance companies will give you a great price when your deductible is high because this means that you're not going to make claims frequently. The size of a claim is not what alarms them it's the frequency of claims. And depending on how frequently a particular company is having claims determines their rates. If insurance company "A" is having twice as many claims as company "B" in a particular area then their rates will be higher. My cost for insurance in Las Vegas was about 0.25%, but that's because they don't have the hail/thunderstorms/tornado's that we have here in the show-me state.
Call around to the major companies in KC and compare identical coverage, and you'll quickly see who has been having more claims. Then ask them to play around with the coverage: Liability up/down, deductible up/down to get an idea how they play on the rate. Ask the agent for his/her advice, but don't skimp on liability - it's better to have the coverage and not need it, than need it and not have it. Deductible is up to you, but remember, insurance is for catastrophic loss, not for maintenance. However, it's ultimately up to you.
Ben