The Braves became the first team not based in New York to win the World Series since the Cleveland Indians in 1948.
They played their home games in Milwaukee County Stadium, where they sold just over 2,220,000 tickets, tops in the National League.
Aaron also finished high in the league standings with 198 hits, a .322 batting average, and a .600 slugging percentage.
In addition, the Braves' new second baseman, Red Schoendienst, was acquired in a trade on June 15, and he played in 93 games.
Spahn led the National League with 21 wins and 18 complete games, and he had a 2.69 earned-run average in 271 innings pitched.
The Braves overcame two serious injuries during the 1957 season that caused some players to miss large parts of the year.
Center fielder Bill Bruton injured his knee after playing in just 79 games, missing the rest of the season.
Infielders Coaches [8] Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg.