Passage: As of the census of 2000, there were 1,174 people, 475 households, and 326 families residing in the city. The population density was 1,473.4 people per square mile (566.6/km²). There were 516 housing units at an average density of 647.6 per square mile (249.0/km²). The racial makeup of the city was 98.64% White, 0.26% Native American, 0.34% from other races, and 0.77% from two or more races. Hispanic or Latino of any race were 0.85% of the population.

Question: What was the population density of the city in 2000.
1,473.4 people per square mile