Blodgett was known for her independent and dedicated personality. She focused intently on her research and was respected by her colleagues for her intellect and work ethic. She never married and devoted her life to her work and other interests.

Outside of her scientific work, Blodgett had a passion for gardening and astronomy. She enjoyed observing the stars and cultivating beautiful flowers, showcasing her diverse interests.

Blodgett participated in various community activities in Schenectady, New York. She was a supporter of local organizations and showed a commitment to giving back to her community.

Irving Langmuir, a prominent scientist at GE, played a significant role in Blodgett's career as a mentor and collaborator. Their close professional relationship fostered a productive and impactful scientific partnership.

Blodgett maintained a close relationship with her family, particularly her mother and brother. She valued their support and companionship throughout her life.

Katharine Burr Blodgett died on October 12, 1979, in Schenectady, New York. She left behind a remarkable legacy of scientific innovation and inspiration for future generations of scientists, especially women.