In Oregon, generally speaking, we have a WC Swing crowd(with Nightclub 2 Step, Hustle, and Cha Cha thrown in), a Lindy Hop crowd (with Balboa and Blues thrown in), an Argentine Tango crowd, and a general dance crowd who do all sorts of Ballroom and may dabble in the above dances.
However, the studios that specialize in Argentine Tango and Lindy Hop tend to also teach the other, so there can be an opportunity to see the two types of dance. They both really exploded in our area about the same time (early 90's)
Here is a recent post on a Portland swing chat list:
Dance of New Sorts
Tango~Blues~Swing
Where: Tango Berretin
When: Friday, Sept. 3rd
Schedule: Tango Lesson from 8-8:45
Swing Lesson from 8:45-9:30
Dance from 9:30-1:30am
Cost: $5 (All Ages)
Come one, Come all and enjoy a night of new sorts. Experience
an all new connection with your friends and partners. Experiment
with a new style.
But above all, come and have a fun night of dancing with others
who share a passion for dancing.
The Music will be played in sets of three styles of songs.
There will be a extensive mix of both traditional and alternative
versions of all three dance styles.
So it seems the idea is not in your area alone.
