Duncan, Iowa Population & Demographics

Statistic	Duncan	Iowa	National
Population	102	3,155,070	328,239,523
Population density (sq mi)	130	57	91
Median age	41.3	38.0	37.7
Male/Female ratio	2.4:1	1.0:1	1.0:1
Married (15yrs & older)	27%	60%	55%
Families w/ Kids under 18	100%	44%	43%
Speak English	88%	92%	79%
Speak Spanish	12%	4%	13%

New Real Estate Listings in Duncan Area

For Sale For Rent

Search

Search Homes for Sale in Duncan, IA

See How Much House You Can Afford. Get Pre-Approved Today

Demographics Quick Facts

The population density in Duncan is 128% higher than Iowa
The median age in Duncan is 9% higher than Iowa
In Duncan 89.22% of the population is White
In Duncan 0.00% of the population is Black
In Duncan 0.00% of the population is Asian

Compare Duncan, IA Demographics

Duncan racial demographics

Race	Duncan	Iowa	National
White	89.22%	90.90%	73.35%
Black	0.00%	3.32%	12.63%
Asian	0.00%	2.14%	5.22%
American Indian	0.00%	0.32%	0.82%
Native Hawaiian	0.00%	0.08%	0.18%
Mixed race	10.78%	1.97%	3.06%
Other race	0.00%	1.27%	4.75%

In Duncan, 10.8% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

The best places in Iowa

Here are the best places to live in Iowa

Check out the 10 safest cities in Iowa

See the best places to live in & around Duncan

These are the 10 most affordable cities in Iowa

Household income distribution

Place of birth by citizenship

Duncan age breakdown

Marital status

Age of children in married couples

Source: The Duncan, IA demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).