County · Montana

Valley County, Montana

Valley County, Montana. Valley County had 7,385 residents in 2025 by the Census Bureau's estimate, down 2.6% since 2020, while Montana grew 5.6%. It holds 7 places (4 cities, villages and boroughs and 3 census-designated) and 3 census tracts. GEOID 30105.

Residents, July 2025 estimate

7,385

Census Bureau estimate (no margin published)
2020 Census count: 7,578 · ACS 2020-2024: 7,519

Median household income

$71,695

±$7,973 (90% margin)
Montana: $72,509

Median home value

$198,400

±$31,845 (90% margin)
Montana: $375,800

Median gross rent

$767

±$153 (90% margin)
Montana: $1,081

How many people live in Valley County, and is it growing?

The 2020 Census counted 7,578 residents in Valley County. The Census Bureau estimates 7,385 for July 1, 2025, down 2.6% since 2020, while Montana grew 5.6%. The 2020-2024 American Community Survey puts the population at 7,519 over 4,926 square miles of land.

  • July 2020→2021 +5 (7,569)
  • 2021→2022 −11 (7,558)
  • 2022→2023 −124 (7,434)
  • 2023→2024 −49 (7,385)
  • 2024→2025 +0 (7,385)
Valley County in Montana. Boundaries: Census Bureau 2024.
Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
MeasureValley CountyMontanaChange since 2015-2019
Total population7,5191,116,875+48
Households2,951±161458,859−435
Average household size2.50±0.142.37+0.33
Housing units4,254±57528,419−625

Valley County's population since 2000

From 7,675 in 2000 to 7,385 in 2025: down 3.8%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

  • 2000 Census 7,675
  • 2005 (estimate) 7,367
  • 2010 Census 7,369
  • 2015 (estimate) 7,630
  • 2020 Census 7,578
  • 2025 (estimate) 7,385

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Valley County?

Valley County holds 7 places: 4 cities, villages and boroughs (incorporated places) and 3 census-designated places. The largest is Glasgow with 3,145 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Valley County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.
Glasgowcity3,2023,190±28$90,310$195,7008.0%100%
St. MarieGEOID 3065400CDP489306±147$38,971$18,80023.9%100%
FrazerCDP354387±92$32,500$27,50045.1%100%
Nashuatown301279±79$80,313$141,70017.2%100%
Fort PeckGEOID 3028450town239280±89$90,833$273,9000.0%100%
HinsdaleCDP193233±65$47,500$109,50021.2%100%
OpheimGEOID 3055525town7586±41$46,500$48,6007.0%100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Valley County?

The median resident of Valley County is 44.3 years old; 22.3% are under 18 and 24.5% are 65 or older. The largest group is non-Hispanic white residents at 84.2%, then non-Hispanic American Indian and Alaska Native residents at 8.1%. 1.2% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
MeasureValley CountyMontanaChange since 2015-2019
Median age44.3±0.540.4no clear change
Under 18 years22.3%21.0%–
65 years and over24.5%±0.4 pts20.1%–
Hispanic or Latino (any race)2.6%4.6%−0.1 pts
White alone, not Hispanic84.2%±0.7 pts83.6%no clear change
Black or African American alone, not Hispanic0.4%±0.4 pts0.4%–
Asian alone, not Hispanic0.0%±0.1 pts0.8%–
American Indian and Alaska Native alone, not Hispanic8.1%±1.2 pts5.3%–
Native Hawaiian and Other Pacific Islander alone, not Hispanic0.0%±0.4 pts0.0%–
Two or more races, not Hispanic4.2%±1.3 pts4.7%–
Some other race alone, not Hispanic0.5%±0.7 pts0.5%–
Born outside the United States1.2%±0.7 pts2.3%no clear change
Speak a language other than English at home (age 5+)1.8%±1.1 pts4.2%–
Civilian veterans (age 18+)7.9%±1.5 pts9.0%–
With a disability16.5%±2.3 pts14.5%–
No health insurance coverage6.4%±1.8 pts8.6%no clear change
High school graduate or higher (age 25+)94.7%±1.6 pts94.6%–
Bachelor's degree or higher (age 25+)25.7%±4.1 pts35.2%no clear change
Graduate or professional degree (age 25+)5.2%±1.3 pts12.0%–
Moved from another state in the past year1.2%±0.9 pts3.7%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Valley County earn?

Half of Valley County's 2,951 households earn less than $71,695 a year (±$7,973), against $72,509 in Montana. In 2015-2019 it was $65,426 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.1% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
MeasureValley CountyMontanaChange since 2015-2019
Median household income$71,695±$7,973$72,509no clear change
Mean household income$83,985±$4,674$98,908–
Per capita income$34,795±$2,071$41,711no clear change
People below the poverty line10.1%±2.6 pts11.5%no clear change
Children under 18 below the poverty line16.5%±7.4 pts12.7%no clear change
Households receiving SNAP8.4%±3.4 pts7.8%–
Households with a broadband subscription84.9%±3.6 pts89.4%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Valley County?

Owners occupy 78.5% of Valley County's occupied homes and renters 21.5%. The median owner-occupied home is valued at $198,400 by its owner (±$31,845). The median renter pays $767 a month including utilities, and 33.1% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
MeasureValley CountyMontanaChange since 2015-2019
Median home value (owner-occupied)$198,400±$31,845$375,800no clear change
Median gross rent$767±$153$1,081no clear change
Renters paying 35% or more of income on rent33.1%±13.9 pts35.5%no clear change
Median monthly owner costs, with a mortgage$1,598±$61$1,798–
Owner-occupied homes78.5%±4.2 pts69.2%no clear change
Housing units4,254±57528,419−625
Homeowner vacancy rate4.0%±3.1 pts0.9%–
Rental vacancy rate8.5%±8.0 pts5.3%–
Single-family detached homes71.2%±3.9 pts68.8%–
Mobile homes4.5%±1.5 pts9.4%–
Built 2020 or later0.0%±0.1 pts2.3%–
Built 1939 or earlier12.3%±2.4 pts12.8%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Valley County building?

Builders took permits for 0 new housing units across Valley County in 2025 (0 single-family), 0.0 per 1,000 residents.

  • 2019 8 units
  • 2020 9 units
  • 2021 9 units
  • 2022 2 units
  • 2023 1 units
  • 2024 0 units
  • 2025 0 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Valley County get to work?

68.6% of Valley County's workers drive alone and 15.9% work from home. The average trip to work takes 15.4 minutes. The unemployment rate in 2020-2024 averaged 3.0%.

Work and commuting, ACS 2020-2024 5-year estimates
MeasureValley CountyMontanaChange since 2015-2019
In the labor force (age 16+)62.3%±3.0 pts62.9%–
Unemployment rate3.0%±1.0 pts3.6%−2.2 pts
Drove alone to work68.6%±5.1 pts71.1%–
Carpooled9.1%±3.2 pts9.7%–
Public transportation0.8%±0.8 pts0.6%–
Walked4.6%±2.0 pts3.9%–
Worked from home15.9%±3.9 pts12.5%+8.6 pts
Mean travel time to work15.4 min±1.719.1 minno clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Valley County's census tracts?

Valley County is divided into 3 census tracts. Among those with a reliable estimate, median household income runs from $64,521 (Tract 9406) to $90,066 (Tract 1005).

Census tracts of Valley County, ACS 2020-2024 5-year estimates; sort by any column
Tract 100130105100100Fort Peck (6%)1,5991,664±208$72,438$213,300$5774.6%
Tract 100530105100500Glasgow (90%)2,7902,843±171$90,066$199,600$7498.3%
Tract 940630105940600St. Marie (12%)3,1893,012±242$64,521$190,000$95214.9%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Valley County compare with Montana's other counties?

Valley County's rank among Montana's counties with a reliable estimate (1 = highest)
MeasureRank
Population29th of 56
Growth 2020-202548th of 56
Residents per square mile40th of 56
Median household income14th of 56
Median home value41st of 56
Median gross rent36th of 56
Poverty rate39th of 56
Bachelor's degree or higher29th of 56
Median age29th of 56

Every county in Montana

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Valley County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.