• county
  • FIPS 30005
  • Largest town: Chinook

Blaine County, Montana

Blaine County had 6,903 residents in the Census Vintage 2024 estimate, on 4,227.5 square miles of land. It ranks 31st of 56 in Montana by population and 9th by land area.

Population
6,903
#31 of 56 in Montana · #2,663 in US
Area
4,227.5 sq mi
#9 of 56 in Montana · #110 in US
Density
1.6 / sq mi
#39 of 56 in Montana · #3,019 in US
Median household income
$56,865
#34 of 56 in Montana · #2,149 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Blaine County within Montana. Pin: Helena.

Measure from here

Tools and pages that start from Blaine County

Blaine County population, land area and income

Blaine County had 6,903 residents in the Census Vintage 2024 estimate, on 4,227.5 square miles of land. It ranks 31st of 56 in Montana by population and 9th by land area. That works out to 1.6 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Montana has 7,814 residents; Blaine County is somewhat smaller.

Its SAIPE 2023 median household income of $56,865 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

6,903

3144th1st

2663rd of 3,144 (US)

Land area

4,228 sq mi

3144th1st

110th of 3,144 (US)

Density

1.6 / sq mi

3144th1st

3019th of 3,144 (US)

Median household income

$56,865

3143rd1st

2149th of 3,143 (US)

Rank within Montana (56)

Population

6,903

56th1st

31st of 56 (MT)

Land area

4,228 sq mi

56th1st

9th of 56 (MT)

Density

1.6 / sq mi

56th1st

39th of 56 (MT)

Median household income

$56,865

56th1st

34th of 56 (MT)

How Blaine County's population changed since 2020

Blaine County lost 100 residents between the July 2020 and July 2024 estimates, a drop of 1.4%. That ranks 45th of 56 in Montana for growth. The median Montana county changed by +2.8%, and the state as a whole by +4.6%.

Since the April 2020 estimates base, Blaine County recorded 354 births and 304 deaths, a natural change of +50. Net international migration added -2 and net domestic migration, people moving to or from other US counties, came to -180. The largest single component was domestic migration, which removed 180 people.

7,00320206,99920216,95620226,88420236,9032024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
354
Deaths
304
Net international migration
-2
Net domestic migration
-180
Change, July 2023 to July 2024
+19

Where Blaine County is

The Census internal point of Blaine County is at 48.428300, -108.967600. It sits in UTM zone 12N. The map shades Montana's 56 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Blaine County outlined. Dots are towns of 1,000+ people with residents in it.

Liberty County: -1.2%Golden Valley County: +5.1%Dawson County: -2.1%Flathead County: +9.2%Beaverhead County: +6.7%Prairie County: +2.0%Garfield County: +0.9%Lewis and Clark County: +5.5%Sweet Grass County: +2.4%Wheatland County: -0.7%Ravalli County: +8.5%Jefferson County: +9.6%Carter County: -0.6%Chouteau County: -0.6%Custer County: +0.9%Teton County: +3.1%Granite County: +9.0%Deer Lodge County: +4.1%Cascade County: +0.1%Powder River County: +2.4%Meagher County: +7.3%Daniels County: -1.7%Glacier County: -1.8%Wibaux County: -2.7%Fallon County: -2.7%McCone County: -0.7%Sheridan County: -2.5%Missoula County: +3.5%Toole County: +3.7%Sanders County: +11.5%Roosevelt County: -5.6%Rosebud County: -1.3%Treasure County: -2.5%Yellowstone County: +3.9%Blaine County: -1.4%Musselshell County: +14.8%Broadwater County: +21.0%Powell County: +2.6%Fergus County: +3.4%Phillips County: +0.1%Gallatin County: +6.2%Silver Bow County: +2.6%Madison County: +12.6%Richland County: -4.4%Lake County: +6.9%Valley County: -1.7%Judith Basin County: +4.3%Hill County: -1.2%Big Horn County: -2.2%Stillwater County: +5.0%Carbon County: +9.4%Mineral County: +13.7%Petroleum County: +4.6%Pondera County: +3.4%Park County: +4.9%Lincoln County: +12.4%
Change 2020 to 2024
  1. < -1.4%
  2. < +0.9%
  3. < +3.9%
  4. < +7.3%
  5. ≥ +7.3%
no data

Orange pin: Blaine County internal point. Dark pin: Helena.

Internal point

Decimal
48.428300, -108.967600
DMS
48°25'41.88"N 108°58'3.36"W
UTM
12N 650345.0E 5365901.1N
Geohash
c8de82h5q
Plus code
85WHC2HJ+8X

Towns in Blaine County

One incorporated place of 1,000+ people has residents in Blaine County, 1,162 people together, or 17% of the county. Each figure counts only the part of the town inside Blaine County; towns marked "part" extend into another county. The largest is Chinook with 1,162.

  1. 01Chinook1,162
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Blaine County

The Census 2024 county adjacency file lists 4 neighbors for Blaine County. The most populous is Hill County, MT, with 16,065 residents. Distances run between Census internal points in a straight line.

Distance to Helena and the nearest big city

Helena is 190.9 miles SW of Blaine County's internal point in a straight line. The nearest place of 100,000 or more is Billings, MT (population 121,483), 183.4 miles away. The nearest place of 10,000 or more is Great Falls, MT (population 60,013), 125.5 miles away.

Blaine County FIPS code

The FIPS code of Blaine County is 30005: state code 30 for Montana plus county code 005. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $56,865.

Questions people ask

What is the population of Blaine County, Montana?

The Census Vintage 2024 estimate for July 1, 2024 is 6,903. That is down 100 people (1.4%) from the July 2020 estimate of 7,003.

What is the FIPS code of Blaine County?

30005. The first two digits (30) are Montana; the last three (005) identify the county.

What is the largest town in Blaine County?

Chinook, with 1,162 residents inside Blaine County in 2024.

Which counties border Blaine County?

4 county-equivalents border it in the Census 2024 adjacency file: Hill County, MT; Fergus County, MT; Chouteau County, MT; Phillips County, MT.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.