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-area historical tornado activity is slightly below Iowa state average. It is 60% greater than the overall U.S. average. On 1/24/1967, a category F4 (max. wind speeds 207-260 mph) tornado 25.0 miles away from the Ottumwa city center injured 2 people and caused between $500,000 and $5,000,000 in damages.