Not to be confused with effectiveness and efficacy. For other uses, see efficiency (disambiguation). Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste.
Marengo, Iowa. Marengo is a town in and the county seat of Iowa County, Iowa, United States. It has served as the county seat since August 1845, even though it was not incorporated until July 1859. The population was 2,528 in the 2010 census, a decline from 2,535 in 2000.
Iowa County Assessor 901 Court Avenue Marengo IA 52301 49.7 miles from Olin 319-642-3851 Clinton County Assessor 1900 North 3rd Street Clinton IA 52732 49.9 miles from Olin 563-244-0569 County Assessor 210 5th Avenue Northeast Independence IA 50644 50.3 miles from Olin 319-334-2706