Greetings -
Music teacher and church bell choir director here. The above answers should set you up nicely.
Your question got me to thinking in a couple of different directions about how to model bells and other environmental sounds.
Church bells may chime on the hour during certain hours, or at weddings/services/emergencies/etc. There is also a prolonged funeral peel (as in "For whom the bell tolls"). The country church you describe may have one (smaller and cheaper) bell.
As a modeler, you could control the bells via pushbutton. You could alternatively assume the role of a passerby and have the bells controlled by other means. While you are at it, you could add other environmental sounds.
Obviously, a small device cannot replicate the frequencies of a real bell, and I'm not sure how I feel about this. I'm not sure a real bell under the layout is what you would want, even it that was simple to achieve!
Church bells also have a distance component to the sound. However, if you moved your sound source farther away to add realism, it might not sound like it was coming from the church - does this matter? Also, the digital sample you use matters. A bell sounds very different in the belfry vs. several blocks down the road.
