Flathead County, Montana Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 4th-largest in Montana

The population of Flathead County, Montana is 108,445 as of the 2023 American Community Survey, making it the 4th-largest county in Montana. The median household income is $71,327, the median home value is $467,700, and the median age is 42.1.

The population of Flathead County has grown 26.0% since 2010 (90,863 → 114,527), a +1.67% annualized rate.

Flathead County within Montana · Source: US Census TIGER/Line via us-atlas

108,445

Population

+1.67%

Annual growth

People / sq mi

$71,327

Median Income

$467,700

Median Home Value

Flathead County covers 5,087 sq mi of land at 21.3 people per square mile.

About Flathead County, MT

Flathead County is a county in Montana with a population of 108,445. It ranks #4 among counties in Montana by population. The median age is 42.1, older than the national median. The population is 50.0% male and 50.0% female.

The median household income in Flathead County is $71,327, near the US median of $74,580. 5.6% of residents live below the federal poverty level. Home values sit at a median of $467,700, with monthly rent averaging $1,094. The homeownership rate of 74.0% is higher than the national rate of 64.8%.

Educational attainment in Flathead County reflects 36.0% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 14.7% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 19.3 minutes each way.

Flathead County Population History (2010-2024)

The county of Flathead County had a population of 90,863 in 2010 and 114,527 in 2024, a 26.0% growth over 14 years. The peak was 114,527 in 2024. Average annual growth rate: 1.67%.

114,527

Population (2024)

90,863

Population (2010)

114,527

Peak (2024)

1.67%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	90,863	-	-	estimate
2011	91,282	+419	+0.46%	estimate
2012	91,630	+348	+0.38%	estimate
2013	92,988	+1,358	+1.48%	estimate
2014	94,642	+1,654	+1.78%	estimate
2015	95,940	+1,298	+1.37%	estimate
2016	97,901	+1,961	+2.04%	estimate
2017	100,272	+2,371	+2.42%	estimate
2018	102,100	+1,828	+1.82%	estimate
2019	103,880	+1,780	+1.74%	estimate
2020	104,881	+1,001	+0.96%	estimate
2021	108,790	+3,909	+3.73%	estimate
2022	111,783	+2,993	+2.75%	estimate
2023	113,495	+1,712	+1.53%	estimate
2024	114,527	+1,032	+0.91%	estimate

Race & Ethnicity

White	91.4%
Black or African American	0.3%
Asian	0.1%
Hispanic or Latino (any race)	2.9%
Two or More Races	0.0%

Age & Sex

42.1

Median Age

50.0%

Female

50.0%

Male

20.8%

Age 65+

Age Distribution

Under 5

5.4%

5–9

6.1%

10–14

6.5%

15–19

5.7%

20–24

4.8%

25–34

12.0%

35–44

13.1%

45–54

11.8%

55–59

6.1%

60–64

7.8%

65–74

13.3%

75–84

5.8%

85+

1.7%

Children (under 15): 18.0% · Seniors (65+): 20.8%

Income & Poverty

Median household income	$71,327+$1,405 vs state
Mean household income	$94,808
Per-capita income	$39,403
Poverty rate	5.6%-1.5% vs state
Unemployment rate	1.9%
Employment-to-population	60.7%

Top Industries by Employment

Professional & business services

21.2%

Education & health care

11.4%

Construction

11.3%

Finance & real estate

10.1%

Information

7.1%

Manufacturing

6.7%

Arts, entertainment & food

4.5%

Agriculture

4.1%

The largest employment sector in Flathead County is professional & business services, accounting for 21.2% of workers.

How residents commute

0.1%

Drive alone

2.9%

Carpool

73.8%

Public transit

14.7%

Work from home

19.3 min

Avg commute

Housing

$467,700+$129,600 vs state

Median home value

$1,094

Median rent

74.0%

Homeownership rate

50,948

Total housing units

85.5%

Occupied

14.5%

Vacant

26.0%

Renter-occupied

Social & access

90.9%

With health insurance

94.4%

With broadband internet

50.1%

Foreign-born

9.4%

Veterans (18+)

11.5%

With a disability

96.7%

Speak language other than English at home

Education

95.6%

High School+

36.0%

Bachelor's+

Largest cities in Montana

Billings (118,321)Missoula (75,600)Great Falls (60,412)Bozeman (55,042)Butte-Silver Bow (34,929)Helena (33,126)Kalispell (26,830)Belgrade (11,425)All Montana cities →

Other counties in Montana

Yellowstone County (167,340)Gallatin County (122,194)Missoula County (119,639)Cascade County (84,601)Lewis and Clark County (72,580)Ravalli County (45,807)Silver Bow County (35,589)Lake County (32,073)Lincoln County (20,656)Park County (17,484)All Montana counties →

Part of Montana

Montana demographic profile All Montana data →

Metro areas in Montana

Billings (187,269)Missoula (124,435)Bozeman (122,194)Helena (92,391)Great Falls (84,601)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Flathead County, Montana has a population of 108,445 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest county in Montana. Population density is 21 people per square mile.

The population of Flathead County has grown 26.0% since 2010 (90,863 → 114,527), a +1.67% annualized rate.

The median household income in Flathead County, Montana is $71,327, with mean (average) household income of $94,808 and per-capita income of $39,403. 5.6% of residents live below the federal poverty level.

In Flathead County, the largest racial and ethnic groups are White (91.4%), Hispanic or Latino (2.9%), Black or African American (0.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Flathead County, Montana is 42.1 years. Residents are 50.0% female and 50.0% male.

The median home value in Flathead County is $467,700 and median monthly rent is $1,094. 74.0% of occupied housing units are owner-occupied. The county has 50,948 total housing units, 14.5% of which are vacant.

The largest employment sector in Flathead County, Montana is professional, scientific, and management services, employing 21.2% of workers. The unemployment rate is 1.9%.

Billings is among the largest cities associated with Flathead County, Montana, with a population of 118,321.