Dimensions, number of rooms, and acreage of Temples provided by "Temples of the Church of Jesus Christ of Latter-day Saints."
"Temple Dimensions," Temples of the Church of Jesus Christ of Latter-day Saints, accessed September 9, 2021
[Summary: From 1998-2002, there was a decrease in temple sizes. The Church made 32 temples in a row that were exactly 10,700 square feet large. Since that time, there has been a moderate increase in size ranging from around 20,000 to 50,000 square feet.
The average size of all LDS Temples: 38,135 sq ft
The median size of all LDS Temples: 26,969 sq ft
The mode size of all LDS Temples: 10,700 sq ft (32 temples between 1999-2002)
The average size of LDS temples between 1999-2002 was 17,762 sq ft
The average size of LDS temples between 2006-2021 is now 38,024 sq ft
The largest LDS temple was the Salt Lake Temple built in 1893 at 253,000 sq ft, followed by LA, Washington DC, and Jordan River temple.
The smallest LDS temple is Colonia Juárez Chihuahua Mexico Temple at a whopping 6,800 sq ft.]
Summary of data from "Temple Dimensions," Temples of The Church of Jesus Christ of Latter-day Saints.