The Shriver center.

I'm not sure about the party question, but the Germantown Indoor Swim Center is awesome. We took our kids there often when they were younger.

Is there a Goldfish swim school in MoCo? If so, they host those and handle a lot of the details which can make it really easy.

The county pools- just look at their website

My son has a march birthday and he is interested in having a pool party for his birthday party. He will be turning 7. Are there any indoor pools in Montgomery county where you can host a birthday party?