Duncombe is the 40,869th most popular last name (surname) in the United States; frequency is 0.000%; percentile is 84.279 [SourceCBN]
Duncombe, Iowa, United States [City]; population was 488 in 1990; housing units was 203 in 1990; location is 42°28'N 93°60'W; land area is 1.98 square miles (1,267 acres); FIPS code is 22755 [SourceCBP]