Wikipedia article: List of Major League Baseball progressive single-season home run leaders

Question: mlb record for most hr in a season
Short answer: Mark McGwire
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel

Question: who has the most home runs in a single season in major league baseball
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: who has the homerun record in a season
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: who holds the homerun record in one season
Short answer: Mark McGwire
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel

Question: what is the record for home runs in a season
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 15 years 71st on October 5 off Chan Ho Park

Question: what is the mlb home run record in a season
Short answer: 73
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: who holds the mlb single season homerun record
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: most major league home runs in a season
Short answer: 73
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: the record for most home runs in a season
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire * St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 15 years 71st on October 5 off Chan Ho Park

Question: who holds the homerun record in a season
Short answer: George Hall
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: who holds the records for the most homeruns in a single season
Short answer: Mark McGwire
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel

Question: who holds the record for the most homeruns in a single season
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: what is the mlb single season homerun record
Short answer: 73
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park

Question: who hold the mlb single season homerun record
Short answer: Barry Bonds,
Answer: 73, by Barry Bonds, San Francisco Giants ( NL ), 2001 ( 162 game schedule ) In part due to 9 / 11 terrorist attacks, the then - recently set record of only three years by McGwire, and Bonds ' poor relationship with the media and some fans, Bonds ' record setting was not as publicized as the previous chases. Bonds was initially chased closely by Sosa and Luis Gonzalez of the Arizona Diamondbacks, but Gonzalez faded late and finished with 57, while Sosa finished closer with 64 to become the first player to exceed 60 home runs in three separate seasons. McGwire was not a factor during what would be his final major league season, as the injuries that had plagued him for much of his career finally took their toll, although he still hit at a pace that would have put him near 50 if he had played a full season. Bonds ' slugging percentage of. 863 broke the major league record set by Ruth in 1920. As happened with McGwire 's record, Bonds ' connection to steroids resulted in his being among the accomplishments questioned in the era.

Question: who hit the most homeruns in a single season
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 15 years 71st on October 5 off Chan Ho Park

Question: who holds the homerun record for a single season
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 15 years 71st on October 5 off Chan Ho Park

Question: who has the most single season home runs
Short answer: Barry Bonds
Answer: Batter Team Age Year HR Reign Record breaker George Hall Philadelphia Athletics 27 1876 5 3 years -- Charley Jones Boston Red Caps 29 1879 9 4 years 6th on July 31 off George Bradley Harry Stovey Philadelphia Athletics 27 1883 14 1 year 10th on August 1 off Jack Neagle Ned Williamson Chicago White Stockings 27 1884 27 35 years 15th on July 9 off Ed Bagley Babe Ruth Boston Red Sox 24 1919 29 1 year 28th on September 24 off Bob Shawkey Babe Ruth New York Yankees 25 1920 54 1 year 30th on July 19 off Dickie Kerr Babe Ruth New York Yankees 26 1921 59 6 years 55th on September 15 off Bill Bayne Babe Ruth New York Yankees 32 1927 60 34 years 60th on September 30 off Tom Zachary Roger Maris New York Yankees 27 1961 61 37 years 61st on October 1 off Tracy Stallard Mark McGwire St. Louis Cardinals 35 1998 70 3 years 62nd on September 8 off Steve Trachsel Barry Bonds San Francisco Giants 36 73 17 years 71st on October 5 off Chan Ho Park