19 Years Old - Have a few questions

I'm 19, I swam very competitively here in KS from 8 to 14 years old and stopped because my high school didn't have a team and I needed a break from hardcore swimmin. I have been missing the sport since I left and I am now trying to get back into it. My old club team cuts off at 18 years old. I can't go that route so I turned to USMS. It doesn't seem like there are any USMS teams around here so I'm going to start working out at my old club alone for a few months until I'm in minimum swimming shape again before I consider any meets. My questions are: 1.) When I do compete again will I most likely be alone in my races due to my age, or do you usually see a decent number of people my age? 2.) What is the general level of competitiveness associated with USMS? Not to sound conceited but I have a big box full of blue ribbons and gold medals; I'm not slow. I want some type of competition. 3.) If I were to be alone in my age group, is there an "open" age group? I understand these things will depend on my area but I'm asking for your opinion based on what you've seen in your area. Thanks!