Ann McLoon was born in Norwood, Massachusetts, to Harold McLoon and Mildred Plympton McLoon. Details regarding her early childhood are limited, but this marks the beginning of her journey.

She attended local schools in Massachusetts. As a young adult, Ann developed a love for math and was a dedicated student.

Ann graduated from Wellesley College with a degree in mathematics. This solid foundation in analytical thinking would later prove crucial to her design and engineering efforts.

After graduating, Ann briefly worked various jobs, including a stint as a secretary. These early experiences, though seemingly unrelated to her later inventions, broadened her understanding of real-world needs and challenges.