Visit https://maps.cityofevanston.org/apps/311AboutMyPlace/ on the City's website, type in the address of the property and select the magnifying glass. A page of information about the property will return and the zoning code will be displayed under "Quick Data.
Zoning district summary sheets are available on the City's website: https://www.cityofevanston.org/government/departments/community-development/planning-zoning/zoning-applications