Input (grade 2): There were 3,531 housing units at an average density of 598.4 per square mile (231.1 / km ²).
Output (grade 3): The population density was 630.9 / km ² (1,633.9 / mi ²). There were 3,531 housing units at an average density of 231.1 / km ² (598.4 / mi ²).