I live in St. Louis County (Chesterfield) & I have not seen any either. I hope they are just late.

I'm near Springfield and saw our first hummingbird Thursday evening. He stayed at my feeder for a long time. I didn't see him all day yesterday so maybe he was just passing through. He might be on his way to your house. lol I wonder how long that would take.

Kellyanne, I'm in Clay County Missouri (near Metro North Mall). I have not seen any yet. Last year I saw my first one on 4/16. So this is not all that late. Especially considering the brutal cold we had. Keep watching, they're on their way!
Gloria KC

I am also in St Louis county and have not seen any either. Last year I had one on April 6 (I keep track of the date from year to year) Since I feed every year, I have had some fly up to my kitchen window and look in if I am late putting out the feeders. This year I had them out on April 1. Needless to say, the feeders were frozen solid a few days later. I am hoping there were no hummers around then.