Mandan Population

1880–2026

25,214

2026 projection

4.1% since 2020 (increase)

05K10K15K20K25K30K18801900192019401960198020002020

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 Mandan. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202625,214+1530.61%
202525,061+2270.91%
202424,834+800.32%
202324,754+2461.00%
202224,508+1010.41%
202124,407+1880.78%
202024,219+1,5496.83%
201922,670+1830.81%
201822,487+1310.59%
201722,356+2231.01%

Showing 10 of 30 years.

Mandan Demographics

36.1median age

Median age

Female37.6 yrs
Male35.7 yrs

Adults

19,171
4,015 seniors · 21%15,156 other adults

Sex

Female 49% · 12,028Male 51% · 12,494

Population by age

MaleFemale85+ years, male: 17585+ years, female: 18880–84 years, male: 11880–84 years, female: 23375–79 years, male: 28475–79 years, female: 33870–74 years, male: 45570–74 years, female: 60165–69 years, male: 88565–69 years, female: 73860–64 years, male: 90060–64 years, female: 79455–59 years, male: 55855–59 years, female: 66850–54 years, male: 68850–54 years, female: 66345–49 years, male: 62045–49 years, female: 70840–44 years, male: 66440–44 years, female: 72235–39 years, male: 1,10135–39 years, female: 84030–34 years, male: 1,01530–34 years, female: 70125–29 years, male: 92425–29 years, female: 1,06520–24 years, male: 1,16220–24 years, female: 90515–19 years, male: 71715–19 years, female: 67410–14 years, male: 84010–14 years, female: 8085–9 years, male: 8245–9 years, female: 7520–4 years, male: 5640–4 years, female: 63085+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

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 245 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

Mandan Income

$71,780median household income

Median household income

$71,780

Half of households earn more, half earn less

Median earnings

$50,011

Typical yearly pay for a worker 25 or older.

Poverty rate

9.8%

About 1 in 10 residents

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

Mandan Marital Status

51% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married51%49%53%
Never married35%40%29%
Divorced9%8%11%
Widowed5%4%6%
Separated<1%<1%<1%

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

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year