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Duncan, IA
Census-designated place in Hancock County, Iowa.
Population
21
Land area
0.8sq mi
People per sq mi
27
ZIP codes
0
Duncan and its ZIP codes
Duncan at a glance
- Duncan is 53% less dense than Iowa as a whole.
Economy and federal money
Jobs, pay, income and spending are for Hancock County. PPP loans are for Duncan.
Unemployment rate
2.8%
Aug 2026, -0.3 pts in a year
Average annual pay
$60,989
5,761 jobs, 2025
Income per person
$68,162
BEA, 2024
Federal spending
$107M
FY 2026, $9,878 per person
Environment and hazard risk
Duncan, IA, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: drought
Storm events since 1996
498
Countywide, mostly hail
Flood insurance policies
6
0.1% of homes, county
July high / Jan low
82° / 6°F
34.3 inches of rain a year
Cities near Duncan
| Name | Distance | Land area (sq mi) |
|---|---|---|
| BrittCity | 4.9 mi | 1.3 |
| HayfieldCensus-designated place | 5 mi | 1 |
| GarnerCity | 5.1 mi | 2.1 |
| MillerCensus-designated place | 7.6 mi | 2.1 |
| KlemmeCity | 8.4 mi | 0.5 |
| HutchinsCensus-designated place | 9.3 mi | 0.3 |
| Crystal LakeCity | 9.3 mi | 0.2 |
| Forest CityCity | 11 mi | 4.6 |
| VenturaCity | 12 mi | 1.8 |
| KanawhaCity | 13 mi | 2 |
| GoodellCity | 13 mi | 0.4 |
| WodenCity | 14 mi | 0.5 |
| WesleyCity | 15 mi | 0.7 |
| CorwithCity | 15 mi | 1.4 |
| LelandCity | 16 mi | 1.3 |
| Clear LakeCity | 17 mi | 10.8 |
Frequently asked questions
- What county is Duncan, IA in?
- Duncan is in Hancock County, Iowa.
- What is the population of Duncan, IA?
- About 21 people live in Duncan, based on American Community Survey 5-year estimates.
- What cities are near Duncan?
- Nearby places include Britt (4.9 mi), Hayfield (5 mi), Garner (5.1 mi), Miller (7.6 mi), Klemme (8.4 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023