sum (plural sums) 1  A quantity obtained by addition or aggregation. The sum of 3 and 4 is 7. ( 2 often plural) An arithmetic computation, especially one posed to a student as an exercise (not necessarily limited to addition). We're learning about division, and the sums are tricky. 3  A quantity of money. a tidy sum. the sum of forty pounds.
Most / Least Educated Cities in IA. As of 2010-2014, the total population of Ottumwa is 24,847, which is 0.60% less than it was in 2000. The population growth rate is much lower than the state average rate of 5.19% and is much lower than the national average rate of 11.61%.
Ottumwa, IA. Online Offers. Ottumwa ( /ÉtÊmwÉ/ É-tum-wÉ) is a city in and the county seat of Wapello County, Iowa, United States. The population was 24,998 at the 2000 census. It is located in the southeastern part of Iowa, and the city is split into northern and southern halves by the Des Moines River. The young town was severely damaged during the Flood of 1851. In 1857, coal was being mined from the McCready bank, a site along Bear Creek four miles west of Ottumwa.