From the menu at the upper left of this page, if you select "More" and then "Member Homepages" you can use the "Advanced Search" to search by state, city and other terms. It looks like there are currently 349 members from Missouri, not all with the exact city listed. If some are near you, you can probably contact them by the private message feature of the site, and see if they'd be interested in getting together (many people list their interests here too), and start your own jam.
Good luck.

I am meeting some friends in Mt View to play tunes on Thursday evening and Friday.

There is always "jams" at the "Pickin Park" - usually every night and during the day on the weekends. But don't expect those to be old time - it will be a mixture of bluegrass, country, or americana (4 pavilions, and a number of picnic tables)

But from what I am told - they have started a regular OT "slow - jam" on Thursday nights at the park. I'm not real exicted about a slow jam, but my friends are good musicians - we may find a corner somewhere to play.

And - a lot of times there will be folks playing on the porch or in the front yard of the Music Store.

Weekends will usually always have music (concert) on the Courthouse Square.

And - there is usually a jam of sorts (by inivitation) in the parlor of "The Inn at Mt. View) (B&B) - next door to the Pickin Park.

All of this is within an EASY walking distance of each other. And the folks are friendly. Mt View is just a few miles south of the MO border - close to Norfolk Lake and Blanchard Springs Caverns.

I'm with Tony.
If you can get to mtn. View once, you'll figure out a way to get there, again.
Jammers paradise. Very friendly. Very supportive.

I wish I could get to Mountain View, but right now it would be a logistical nightmare. Unfortunately, anything over a 2 hour drive will require much planning ahead.

I am looking at the members list though. There might be some possibilities there.