Custer County Population

1890–2026

28,149

2026 projection

1.1% since 2020 (decrease)

05K10K15K20K25K30K1900192019401960198020002020

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 Custer County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202628,149-260.09%
202528,175-260.09%
202428,201-1070.38%
202328,308+2480.88%
202228,060-1140.40%
202128,174-2740.96%
202028,448-4651.61%
201928,913-170.06%
201828,930+20.01%
201728,928-2961.01%

Showing 10 of 28 years.

Custer County Demographics

32.8median age

Median age

Female33.2 yrs
Male32.3 yrs

Adults

21,209
4,114 seniors (65+) · 19% of adults17,095 other adults

Sex

Female 50.4% · 14,241Male 49.6% · 14,018

Population by age

MaleFemale85+ years, male: 20785+ years, female: 33080–84 years, male: 13580–84 years, female: 32475–79 years, male: 37175–79 years, female: 31870–74 years, male: 52770–74 years, female: 45665–69 years, male: 60365–69 years, female: 84360–64 years, male: 81160–64 years, female: 77755–59 years, male: 70455–59 years, female: 72450–54 years, male: 61250–54 years, female: 59045–49 years, male: 68045–49 years, female: 61740–44 years, male: 87040–44 years, female: 83135–39 years, male: 99035–39 years, female: 99030–34 years, male: 85130–34 years, female: 78825–29 years, male: 85225–29 years, female: 90720–24 years, male: 1,77320–24 years, female: 1,72115–19 years, male: 1,11815–19 years, female: 1,09510–14 years, male: 1,15810–14 years, female: 1,0345–9 years, male: 8935–9 years, female: 9800–4 years, male: 8630–4 years, female: 91685+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K1.5K1.5K

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 283 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

Custer County Income

$59,738median household income

Median household income

$59,738

Half of households earn more, half earn less

Median earnings

$42,005

Typical yearly pay for a worker 25 or older.

Poverty rate

16.4%

About 1 in 6 residents

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

Custer County Marital Status

49% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married49%49%49%
Never married36%40%33%
Divorced8%8%9%
Widowed5%2%8%
Separated2%1%3%

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

Sources

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

Population

American Community Survey, 2024 5-year