Only homes on the market in Wyoming were typically larger, at 2,627 square feet. | Rio Giancarlo, Deseret NewsIn Utah, the average square footage in the five cities analyzed were:Provo, 2,485Salt Lake City, 2,059St. George, 2,596West Jordan, 2,549West Valley City, 2,095Also calculated was the average price per square foot for housing. In the Utah cities analyzed, the average price per square foot was:Provo, $306Salt Lake City, $387St. George, $306West Jordan, $253West Valley City, $247Compare that to the least expensive average price per square foot of any major U.S. city, just $88.58 in Jackson, Mississippi. The most expensive real estate is in California’s Silicon Valley, the study found, where the average price per square foot was nearly $1,046 in Sunnyvale. The decline in the size of homes aimed at first-time buyers comes amid townhouses being built in the U.S., typically smaller than detached, single family homes.