Duncan Population

2010–2026

268

2026 projection

4.6% since 2020 (decrease)

0100200300400500201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Duncan. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026268-31.11%
202527100.00%
2024271-20.73%
2023273-31.09%
2022276-31.08%
2021279-20.71%
2020281-10026.25%
2019381-30.78%
2018384-61.54%
2017390-82.01%

Showing 10 of 17 years.

Duncan Demographics

41.2median age

Median age

Female53.1 yrs
Male31.7 yrs

Adults

358
110 seniors · 31%248 other adults

Sex

Female 49.7% · 237Male 50.3% · 240

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 5 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Duncan Income

$49,041median household income

Median household income

$49,041

Half of households earn more, half earn less

Median earnings

$44,732

Typical yearly pay for a worker 25 or older.

Poverty rate

20.3%

About 1 in 5 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Duncan Marital Status

30% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married30%36%25%
Never married55%61%50%
Divorced5%2%8%
Widowed9%0%16%
Separated1%1%1%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201