performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
Marengo is a village in Morrow County, Ohio, United States. The population was 342 at the 2010 census. Marengo is south of Mount Gilead, the county seat.
Zip Code 60152 is located in the state of Illinois in the Chicago metro area. Zip code 60152 is primarily located in McHenry County. Portions of 60152 are also located in DeKalb County. The official US Postal Service name for 60152 is MARENGO, Illinois. Portions of zip code 60152 are contained within or border the city limits of Marengo, IL, . Zip code 60152 is within area code 815 and area code 779.