20.5% of all households were made up of individuals and 8.2% had someone living alone who was 65 years of age or older.
The average household size was 2.71 and the average family size was 3.13. For every 100 females age 18 and over, there were 92.4 males.
Jobs Plus, Inc., the local economic development organization has recruited several small to medium-sized firms to the county.
Manufacturing jobs are found primarily in electronics, lumber and furniture at the present.
There were 6,697 housing units at an average density of 693.5 per square mile (267.7/km²).
The racial makeup of the city was 96.13% White, 0.18% African American, 0.87% Native American, 0.56% Asian, 0.06% Pacific Islander, 0.60% from other races, and 1.61% from two or more races.
Post Falls is 20 miles (32 km) east of Spokane and approximately 100 miles (160 km) south of the Canada–United States border.
The elevation of the city is 2,182 feet (665 m) above sea level.
Considerable economic development activity transpired in Post Falls in 2009 including the opening of ALK Source Materials/Biopol which is a Danish pharmaceutical company, a second Super Wal-Mart store that will be located near the new Cabelas store began its construction and is slated to open in early summer 2010, and Lowe’s Home Improvement finalized the purchase of land adjacent to the new Wal-Mart at the Pointe at Post Falls.
Ground Force Manufacturing, a large construction equipment manufacturer, completed an addition that increased their production space by 20,000 square feet (1,900 m) in 2009 in order to meet the heavy demands for their mining construction products around the globe.
Also, Wal-Mart opened its new store in January 2002, employing a workforce of 300.
Construction of a private surgical hospital was completed in 2004.
Post Falls was the chosen location for Flexcel, Inc., a major furniture manufacturer that relocated to North Idaho nearly fifteen years ago and employs a workforce of 350. and by creating an Urban Renewal District to help build infrastructure.