Original: The population density is 11,636.5 \/O/ km2 ( 30,239.2 \/O/ mi2 ) , fourth highest in the nation after neighboring communities of Guttenberg , Union City and West New York .
Simplified: The population density is 11,636.5 \/O/ kmÂ ( 30,239.2 \/O/ miÂ ) .