Dimock was born in 1876 in Hartford, Connecticut.
She was given the nickname of "Teed", and was the daughter of Ira Dimock, a silk merchant based in Connecticut, and older sister of Stanley, Harold Edwin and Florence Irene Dimock (1889–1962).
Dimock developed an interest in art in her childhood and began her education in art in New York in her 20s against the wishes of her parents.
On February 16, 1904 she married painter William Glackens in her family's Vanderbilt Hill mansion, originally built for Cornelius Vanderbilt.

As a wedding present, Robert Henri painted portraits of the bride and groom.
Edith's portrait was started in 1902.
In it, she was described as "still a demure socialite from Hartford" by author Bennard Perlman.
Until they could find a larger place, they first lived in a one-room apartment in the Sherman Building in New York City.
They then lived at 3 Washington Square North.
Following the marriage, "she devoted her time and energies to her family."
Their son Ira, born in 1907, was a writer who wrote two books about his father.
In 1913 Dimock gave birth to their daughter, Lenna, an artist.
Lenna and Edith were favored models for William Glackens.
From 1911 to 1917, Dimock and her family spent the summers at Belport on Long Island, where her husband, William Glackens, painted beach scenes.
Artists and good friends May Preston and James Moore Preston often spent the summers there and traveled with the Glackens to Europe.

Dimock was an honorary secretary of the National Union of Women's Suffrage Societies in 1911 and 1915.
In 1913 she marched in the large suffrage parade in New York, along with a group of other artists.

Her husband died in 1938.
Dimock died October 28, 1955 at her home in Hartford.
Dimock was born in 1876 in Hartford, Connecticut. She was given the nickname of "Teed", and was the daughter of Ira Dimock, a silk merchant based in Connecticut, and older sister of Stanley, Harold Edwin and Florence Irene Dimock (1889–1962). Dimock developed an interest in art in her childhood and began her education in art in New York in her 20s against the wishes of her parents. On February 16, 1904 she married painter William Glackens in her family's Vanderbilt Hill mansion, originally built for Cornelius Vanderbilt.
As a wedding present, Robert Henri painted portraits of the bride and groom. Edith's portrait was started in 1902. In it, she was described as "still a demure socialite from Hartford" by author Bennard Perlman. Until they could find a larger place, they first lived in a one-room apartment in the Sherman Building in New York City. They then lived at 3 Washington Square North. Following the marriage, "she devoted her time and energies to her family." Their son Ira, born in 1907, was a writer who wrote two books about his father. In 1913 Dimock gave birth to their daughter, Lenna, an artist. Lenna and Edith were favored models for William Glackens. From 1911 to 1917, Dimock and her family spent the summers at Belport on Long Island, where her husband, William Glackens, painted beach scenes. Artists and good friends May Preston and James Moore Preston often spent the summers there and traveled with the Glackens to Europe.
Dimock was an honorary secretary of the National Union of Women's Suffrage Societies in 1911 and 1915. In 1913 she marched in the large suffrage parade in New York, along with a group of other artists.
Her husband died in 1938. Dimock died October 28, 1955 at her home in Hartford.
Edith Dimock