By 1866, the association had dozens of teams. Several subpar and short-lived teams are omitted here. Standings were determined by number of total wins, rather than winning percentage. Historical records of game results and player statistics may be missing or incomplete.
| TEAM | W | L | Pct | GB | ||
 | Union | 25 | 3 | .893 | - | |
 | Athletic | 23 | 2 | .920 | 0.5 | |
 | Atlantic | 17 | 3 | .850 | 4.0 | |
 | Eureka | 13 | 6 | .675 | 7.5 | |
 | Active | 10 | 6 | .625 | 9.0 | |
 | Washington | 10 | 5 | .667 | 8.5 | |
 | Mutual | 10 | 2 | .833 | 7.0 | |
 | Eckford | 9 | 8 | .529 | 10.5 | |
 | Eureka | 9 | 7 | .563 | 10.0 | |
 | Enterprise | 9 | 6 | .600 | 9.5 | |
 | Irvington | 9 | 6 | .600 | 9.5 | |
 | Mohawk | 9 | 3 | .750 | 8.0 | |
 | Bkn. Star | 8 | 6 | .571 | 10.0 | |
| | Newark | 8 | 5 | .615 | 9.5 | |
 | Empire | 4 | 7 | .364 | 12.5 | |
 | Gotham | 4 | 4 | .500 | 11.0 | |
 | Eagle | 2 | 9 | .182 | 14.5 | |
| | New Jersey | 2 | 5 | .286 | 12.5 | |
 | Lowell | 2 | 0 | 1.000 | 10.0 | |
 | Albany | .000 | - | |||
 | Lansingburgh | .000 | - |