Custer County Population

1880–2026

5,613

2026 projection

18.8% since 2020 (increase)

02K4K6K8K10K18801900192019401960198020002020

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.
20265,613+230.41%
20255,590+230.41%
20245,567+80.14%
20235,559+2103.93%
20225,349+2805.52%
20215,069+3457.30%
20204,724-3957.72%
20195,119+1573.16%
20184,962+1012.08%
20174,861+2806.11%

Showing 10 of 29 years.

Custer County Demographics

58.2median age

Median age

Female59.7 yrs
Male56.3 yrs

Adults

4,528
1,738 seniors (65+) · 38% of adults2,790 other adults

Sex

Female 49.3% · 2,586Male 50.7% · 2,661

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 52 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

$72,674median household income

Median household income

$72,674

Half of households earn more, half earn less

Median earnings

$52,368

Typical yearly pay for a worker 25 or older.

Poverty rate

12.7%

About 1 in 8 residents

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

Custer County Marital Status

61% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married61%61%62%
Never married20%24%16%
Divorced12%10%15%
Widowed6%5%6%
Separated<1%0%1%

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