- 23 total trophies; From NASL Pacific Conference Champions in the NASL, to League Champions in the USL/A-League, 4 Lamar Hunt US Open Cup Championships, and 2014 Supporters' Shield.
- League award winners; Famous names such as Roger Davies, Peter Hattrup, Mark Peterson, Fredy Montero, Marcus Hahnemann, Jim McAllister, Kasey Keller, Chance Fry, Chad Marshall, Alan Hinton, and Brian Schmetzer.
- Breaking attendance barriers; our MLS attendance is well known, but way back in the NASL days, the Sounders averaged 18,293 over 9 years (1974-1983) while the league average was 12,620 in the same time frame.
Special thanks goes out to Frank MacDonald (@frankmsounders) and Molly Wagner (@crazycalico). Molly helped me with a lot of the early number leg work and fact-checking with her book collection. Frank is a walking fountain of Sounders knowledge from the past and present. Without Frank's help, a lot of these numbers and dates would be the not-so-accurate versions found on Wikipedia.
Note for attendance numbers: All numbers shown are SEASON averages, not single game highs or lows. For single game attendance records: