Blaine County Population

1900–2026

25,333

2026 projection

4.1% since 2020 (increase)

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 Blaine County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202625,333-1840.72%
202525,517-1840.72%
202425,701+3091.22%
202325,392+1920.76%
202225,200+4161.68%
202124,784+4431.82%
202024,341+1,3295.78%
201923,012+2761.21%
201822,736+3351.50%
201722,401+3321.50%

Showing 10 of 27 years.

Blaine County Demographics

45.6median age

Median age

Female46 yrs
Male44.9 yrs

Adults

20,170
5,665 seniors (65+) · 28% of adults14,505 other adults

Sex

Female 48.3% · 12,061Male 51.7% · 12,890

Population by age

MaleFemale85+ years, male: 26985+ years, female: 13180–84 years, male: 37480–84 years, female: 31275–79 years, male: 48975–79 years, female: 65170–74 years, male: 79770–74 years, female: 92865–69 years, male: 83065–69 years, female: 88460–64 years, male: 1,30660–64 years, female: 60955–59 years, male: 74355–59 years, female: 1,24050–54 years, male: 69950–54 years, female: 69245–49 years, male: 92245–49 years, female: 80040–44 years, male: 63940–44 years, female: 66735–39 years, male: 73035–39 years, female: 88430–34 years, male: 81530–34 years, female: 70225–29 years, male: 58125–29 years, female: 51920–24 years, male: 63720–24 years, female: 52115–19 years, male: 1,05215–19 years, female: 77710–14 years, male: 90410–14 years, female: 5305–9 years, male: 4695–9 years, female: 7890–4 years, male: 6340–4 years, female: 42585+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 250 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

Blaine County Income

$92,566median household income

Median household income

$92,566

Half of households earn more, half earn less

Median earnings

$49,087

Typical yearly pay for a worker 25 or older.

Poverty rate

6.6%

About 1 in 15 residents

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

Blaine County Marital Status

58% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married58%57%59%
Never married25%28%22%
Divorced12%10%14%
Widowed3%2%5%
Separated2%3%<1%

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