Most wins in a season: 64 in 1889
Most losses in a season: 61 in 1911
|1889||Harrisburg Ponies||Middle States League||64||19||Roster||Stats|
|1890||Harrisburg Ponies||Pennsylvania State League||39||24||Roster||Stats|
|1892||Harrisburg Ponies||Pennsylvania State League||25||19||Roster||Stats|
|1911||Harrisburg Ponies||Tri-State (PA) League||47||61||Roster||Stats|
Average attendance is based upon the number of actual home dates where known (most leagues from 1992 and later). Where the number of home dates is not known, the average is calculated using half the team's total games.