The championship was played at the Chicago Golf Club, Wheaton, Illinois, from July 12 to 15 and was won by Laura Davies, England.

[1][2] The 2018 U.S. Senior Women's Open was the 12th USGA Championship contested at Chicago Golf Club.

The last previous championship contested here was the 2005 Walker Cup, when the U.S. team defeated Great Britain and Ireland by a single point.

The championship was open to any professional or amateur golfer who was age 50 years or over as of July 12 and had a handicap index not exceeding 7.4.

Winners of the U.S. Women's Open (ten year exemption[c]).

Winners of the U.S. Women's Amateur who later turned professional (three year exemption[c]).

Winners of the U.S. Women's Amateur who did not turn professional (five year exemption[c]) and the 2017 runner-up.

Winners of U.S. Senior Women's Amateur from the last two years and the 2017 runner-up.

Playing members of the two most current Curtis Cup and U.S. Espirito Santo Trophy teams.

[4] The championship was won by 54-year-old Laura Davies, England, with a 16 under par score of 276, 10 strokes ahead of runner-up Juli Inkster, United States.

Marta Leach, United States, finished law amateur tied 10th with a 6 over par score of 298.