Gretna is located in Sarpy County, NE. The population is 4,807, making Gretna the 6th largest city in Sarpy County.
There are 5 public schools in Gretna with an average Homefacts rating of A. The total crime rate for Gretna is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Gretna is low and the median home sales price is $0. Detailed and up-to-date Gretna property reports are available for any property address.