In 2021, Apple grew to 154,000 employees around the world.

Apple total number of employees in 2021 was 154,000, a 4.76% increase from 2020.
Apple total number of employees in 2020 was 147,000, a 7.3% increase from 2019.
Apple total number of employees in 2019 was 137,000, a 3.79% increase from 2018.
Apple total number of employees in 2018 was 132,000, a 7.32% increase from 2017.

Source, Image credit: Apple