The club from Des Moines, Iowa broke in in fine form, winning the pennant with a 98–70 record, one game ahead of the Denver Bears.
The Demons had six representatives on the All-Star team: First baseman Charles Stuvengen collected 229 hits, 18 of which were triples, to complement a .349, which was fifth in the Western League.
Left off of the All-Star team was the most productive hitter in the Triple Crown categories, Dutch Wetzel, who batted .353 and was second in the league with 32 homers.
Oklahoma City claimed that other clubs (the Wichita Izzies, Lincoln Links and Tulsa Oilers) threw games to Des Moines but Western League president Mike Sexton cleared all involved parties.
Des Moines lost a Mid-Western Championship to the Three-I League champion Springfield Senators team by a three games to one margin.
Langford returned and led the league in hitting (.409), triples (28) and steals (31, tied for the lead with Wilbur Swansboro).
Joining him on the All-Star team were C Joe Sprinz who batted .314, utility man Al Van Camp who hit .309 with 11 home runs and pitcher Fred Ortman who went 21–11.
All three 1930 All-Stars returned and again made the All-Star team – Oglesby hit .341 which was 5th in the league to go along with 119 runs, 106 RBI, 200 hits (second-most) and 278 total bases (fifth); Tinning went 24–2 with a league-leading 3.11 ERA and was second in wins and first in winning percentage; Keyes won the Triple crown with a .369 average, 38 homers and 160 RBI, which were 22 more than anyone else.
Joining them as All-Stars were outfielder Mike Kreevich who hit .329, and P Jack Knight who went 17–7 with a 3.30 ERA, which ranked second in the league.
All-Star outfielder Leo Ogorek, who hit .321, led the league with 60 stolen bases and was fourth with 108 runs scored.
Roy Hudson, who hit .348 with 16 homers and Mort Cooper, who went 7–5 both split the season between Des Moines and the Muskogee Oilers.
A four-team playoff resulted with Des Moines facing the second-half champion Davenport Blue Sox while the Saints and Cowboys squared off.
Claude Passeau was the staff ace at 20–11 and led the Western League in wins, strikeouts (239) and innings hurled (244).
Henry Martínez hit just .216 but led the team in homers (12, which ranked fifth in the Western League) and steals (28, which was third most).
Managed by Chuck Kress, they finished second in the first half (38–26) then won the second-half pennant (40–29) before falling to the first-half champion Green Bay Bluejays in the championship three games to one.
The Demons name has not been used since that time by the Des Moines teams – when organized baseball returned to the city in 1969 the club was called the Iowa Oaks.