• county
  • FIPS 30029
  • Largest town: Kalispell

Flathead County, Montana

Flathead County had 114,527 residents in the Census Vintage 2024 estimate, on 5,087.3 square miles of land. It ranks 4th of 56 in Montana by population and 3rd by land area.

Population
114,527
#4 of 56 in Montana · #556 in US
Area
5,087.3 sq mi
#3 of 56 in Montana · #76 in US
Density
23 / sq mi
#6 of 56 in Montana · #2,142 in US
Median household income
$74,150
#6 of 56 in Montana · #723 in US

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

Flathead County within Montana. Pin: Helena.

Measure from here

Tools and pages that start from Flathead County

Flathead County population, land area and income

Flathead County had 114,527 residents in the Census Vintage 2024 estimate, on 5,087.3 square miles of land. It ranks 4th of 56 in Montana by population and 3rd by land area. That works out to 22.5 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Montana has 7,814 residents, so Flathead County is 14.7 times that size.

Its SAIPE 2023 median household income of $74,150 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

114,527

3144th1st

556th of 3,144 (US)

Land area

5,087 sq mi

3144th1st

76th of 3,144 (US)

Density

22.5 / sq mi

3144th1st

2142nd of 3,144 (US)

Median household income

$74,150

3143rd1st

723rd of 3,143 (US)

Rank within Montana (56)

Population

114,527

56th1st

4th of 56 (MT)

Land area

5,087 sq mi

56th1st

3rd of 56 (MT)

Density

22.5 / sq mi

56th1st

6th of 56 (MT)

Median household income

$74,150

56th1st

6th of 56 (MT)

How Flathead County's population changed since 2020

Flathead County gained 9,646 residents between the July 2020 and July 2024 estimates, a rise of 9.2%. That ranks 9th 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, Flathead County recorded 4,976 births and 4,835 deaths, a natural change of +141. Net international migration added +251 and net domestic migration, people moving to or from other US counties, came to +9,850. The largest single component was domestic migration, which added 9,850 people.

104.9k2020108.8k2021111.8k2022113.5k2023114.5k2024
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
4,976
Deaths
4,835
Net international migration
+251
Net domestic migration
+9,850
Change, July 2023 to July 2024
+1,032

Where Flathead County is

The Census internal point of Flathead County is at 48.295400, -114.052100. It sits in UTM zone 11N. The map shades Montana's 56 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Flathead 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: Flathead County internal point. Dark pin: Helena.

Internal point

Decimal
48.295400, -114.052100
DMS
48°17'43.44"N 114°03'7.56"W
UTM
11N 718630.8E 5353334.4N
Geohash
c2wfsxvv1
Plus code
85W77WWX+55

Towns in Flathead County

3 incorporated places of 1,000+ people have residents in Flathead County, 46,265 people together, or 40% of the county. Each figure counts only the part of the town inside Flathead County; towns marked "part" extend into another county. The largest is Kalispell with 31,296.

  1. 01Kalispell31,296
  2. 02Whitefish9,256
  3. 03Columbia Falls5,713
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Flathead County

The Census 2024 county adjacency file lists 9 neighbors for Flathead County. The most populous is Missoula County, MT, with 122,546 residents. Distances run between Census internal points in a straight line.

Distance to Helena and the nearest big city

Helena is 151.6 miles SE of Flathead County's internal point in a straight line. The nearest place of 100,000 or more is Spokane Valley, WA (population 108,267), 153.4 miles away. The nearest place of 10,000 or more is Kalispell, MT (population 31,296), 13.8 miles away.

Flathead County FIPS code

The FIPS code of Flathead County is 30029: state code 30 for Montana plus county code 029. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $74,150.

Questions people ask

What is the population of Flathead County, Montana?

The Census Vintage 2024 estimate for July 1, 2024 is 114,527. That is up 9,646 people (9.2%) from the July 2020 estimate of 104,881.

What is the FIPS code of Flathead County?

30029. The first two digits (30) are Montana; the last three (029) identify the county.

What is the largest town in Flathead County?

Kalispell, with 31,296 residents inside Flathead County in 2024.

Which counties border Flathead County?

9 county-equivalents border it in the Census 2024 adjacency file: Missoula County, MT; Lewis and Clark County, MT; Lake County, MT; Lincoln County, MT; Sanders County, MT; Glacier County, MT; Powell County, MT; Teton County, MT; Pondera 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.