Apartments in the U.S. are, on average, 27 square feet bigger. According to RentCafe, the average size of an apartment unit was 916 square feet in 2023. The size is more in line with the average seen just prior and during the pandemic minus 2022, which saw average unit size at 889 square feet. Despite the bump back up, units are 12 square feet smaller than they were 10 years ago. Two- and three-bedrooms are slightly larger than a decade ago.