Seasons
| Season | League | Position | Playoffs | USOC | Continental / Other | Average attendance |
Top goalscorer(s) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| League | Pld | W | D | L | GF | GA | GD | Pts | PPG | Conf. | Overall | CCL | LC | Name(s) | Goals | ||||
| 2010 | MLS | 30 | 8 | 15 | 7 | 35 | 49 | –14 | 31 | 1.03 | 7th | 14th | DNQ | QR1 | DNE | NH | 19,254 |  Sébastien Le Toux
|
14 |
| 2011 | MLS | 34 | 11 | 8 | 15 | 44 | 36 | +8 | 48 | 1.41 | 3rd | 8th | QF | QR1 | DNQ | NH | 18,259 | Sébastien Le Toux
|
11 |
| 2012 | MLS | 34 | 10 | 18 | 6 | 37 | 45 | –8 | 36 | 1.06 | 8th | 15th | DNQ | SF | 18,053 |  Jack McInerney
|
8 | ||
| 2013 | MLS | 34 | 12 | 12 | 10 | 42 | 44 | –2 | 46 | 1.35 | 7th | 14th | Ro16 | 17,867 | Jack McInerney
|
12 | |||
| 2014 | MLS | 34 | 10 | 12 | 12 | 51 | 51 | +0 | 42 | 1.24 | 6th | 12th | RU | 17,631 | Sébastien Le Toux
|
12 | |||
| 2015 | MLS | 34 | 10 | 17 | 7 | 42 | 55 | –13 | 37 | 1.09 | 9th | 18th | RU | 17,471 | C.J. Sapong
|
9 | |||
| 2016 | MLS | 34 | 11 | 14 | 9 | 52 | 55 | –3 | 42 | 1.24 | 6th | 13th | R1 | QF | 17,519 | Chris Pontius
|
12 | ||
| 2017 | MLS | 34 | 11 | 14 | 9 | 50 | 47 | +3 | 42 | 1.24 | 8th | 16th | DNQ | Ro16 | 16,812 | C.J. Sapong
|
16 | ||
| 2018 | MLS | 34 | 15 | 14 | 5 | 49 | 50 | –1 | 50 | 1.47 | 6th | 11th | R1 | RU | 16,518 |  Cory Burke Fafà Picault
|
10 | ||
| 2019 | MLS | 34 | 16 | 11 | 7 | 58 | 50 | +8 | 55 | 1.62 | 3rd | 5th | QF | R4 | DNQ | 17,111 |  Kacper Przybyłko
|
15 | |
| 2020 | MLS | 23 | 14 | 4 | 5 | 44 | 20 | +24 | 47 | 2.04 | 1st | 1st | R1 | NH | MLS is Back Tournament - SF |
NH | 2,775 |  Sergio Santos
|
11 |
| 2021 | MLS | 34 | 14 | 12 | 8 | 48 | 35 | +13 | 54 | 1.59 | 2nd | 6th | CF | NH | SF | DNQ | 12,903 | Kacper Przybyłko
|
17 |
| 2022 | MLS | 34 | 19 | 10 | 5 | 74 | 26 | +46 | 67 | 1.97 | 1st | 2nd | RU | R32 | DNQ | NH | 18,126 |  Dániel Gazdag
|
24 |
| 2023 | MLS | 23 | 12 | 7 | 4 | 39 | 26 | +13 | 40 | 1.74 | 3rd | 4th | R32 | SF | 3rd | 18,859 |  Julián Carranza
|
10 | |
| Total | – | 450 | 173 | 163 | 114 | 665 | 589 | +76 | 637 | 1.51 | – | – | – | – | – | – | Sébastien Le Toux
|
57 | |
^ 1. Avg. attendance include statistics from league matches only.
^ 2. Top goalscorer(s) includes all goals scored in League, MLS Cup Playoffs, U.S. Open Cup, MLS is Back Tournament, Leagues Cup, CONCACAF Champions League, FIFA Club World Cup, and other competitive continental matches.
^ 3. 2020 MLS Season does not include match data from one-off, in-season MLS is Back Tournament. The Union finished as semi-finalists in that tournament.