United States › Montana › Sweet Grass County COUNTY
Sweet Grass County Montana · 3,762 residents (2025 est.) · 1,856 sq mi
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The short version
Sweet Grass County is a county of 3,720 people in Montana. The median age is 47.0, about 8 years above the US median. That puts it in the top 6% of US counties for household income. There are 2 people per square mile. Owners hold 80% of the housing stock. 1% of people here were born outside the United States.
At a glance
Lower income
below the US median
US median: $82,259
Older
median age 47.0
US median: 38.9
Less educated
24% hold a bachelor's degree
US average: 36%
Less affordable
home values up 68%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 3,609 in 2000
3,762 in 2025 (Census Bureau estimate)
from 2 / sq mi in 2009
US average: 281
from 41.2 in 2000
US average: 38.9
Population, 1990 – 2024
3K 3K 3K 4K 4K 1990 2000 2010 2020 2024 Sweet Grass County Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $77,000
+30%inflation adjusted, since 2000
from $32,422 in 2000
US average: $82,259
from $17,880 in 2000
US average: $44,673
Households earning $100K+
from 24.4% in 2009
US average: 53.3%
from 11.4% in 2000
US average: 12.5%
from 0.415 in 2010
US average: 0.476
Workforce by industry, 2024
Agriculture, forestry, fishing 19.7%
Professional, scientific, technical 5.3%
Public administration 2.1%
Arts, entertainment, food 1.6%
Education & health services 0.9%
Transportation & warehousing 0.8%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$330,100
+68%inflation adjusted, since 2000
from $107,900 in 2000
US average: $376,019
$1,149
+47%inflation adjusted, since 2000
from $429 in 2000
US average: $1,442
from 74.1% in 2000
20.3% rent
from 33.9% in 2009
US average: 10.0%
2.37 people
−15%since 2009
from 2.78 people in 2009
US average: 2.54
from 22.9% in 2009
US average: 22.9%
from 18.5% in 2009
US average: 47.4%
from 4.3 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 96.1%(3,467)
Hispanic / Latino 1.5%(54)
2024
White, non-Hispanic 90.8%(3,376)
Hispanic / Latino 1.2%(45)
from 14 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 17 more ancestry groups with data from 23.6% in 2000
US average: 35.6%
High school or higher
from 88.9% in 2000
US average: 89.6%
from 5.2% in 2000
US average: 14.0%
Section 06
Commute & transportation from 17.1 min in 2000
US average: 26.5
from 50.3% in 2009
US average: 68.9%
from 11.4% in 2009
US average: 8.5%
from 7.9% in 2009
US average: 3.2%
from 20.2% in 2009
US average: 15.0%
from 9.1% in 2009
US average: 2.4%
from 0.0% in 2009
US average: 0.4%
from 0.3% in 2009
US average: 8.3%
Section 07
Work & employment from 6.4% in 2011
US average: 5.2%
from 65.7% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 78.6% in 2020
US average: 74.6%
from 11.9% in 2009
US average: 13.1%
from 30.3% in 2009
US average: 42.5%
Section 08
People & community from 1.5% in 2009
US average: 14.1%
from 18.6% in 2009
US average: 6.2%
from 12.3% in 2012
US average: 13.3%
from 17.8% in 2013
US average: 8.4%
from 70.5% in 2017
US average: 91.0%
Computer in household
from 86.7% in 2020
US average: 95.5%
from 87.7% in 2020
US average: 87.7%
from 98.5% in 2016
US average: 77.7%
from 0.1% in 2016
US average: 13.6%
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 17.8% in 2013
US average: 8.4%
from 39.0% in 2020
US average: 54.8%
Direct-purchase
from 35.6% in 2020
US average: 13.8%
from 29.0% in 2020
US average: 18.4%
from 11.9% in 2020
US average: 20.9%
VA health care
from 5.9% in 2020
US average: 2.2%
Any private
from 75.6% in 2020
US average: 67.1%
Any public
from 41.9% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 24.3%(81)
Gulf War (1990s) 18.3%(61)
Share of the 333 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Sweet Grass County Head to head
Compare Sweet Grass County to nearby counties SWEET GRASS COUNTY VS
Stillwater County
Income $84,732 +10%
Home value $405,800 +23%
Population 9,445 +151%
SEE FULL COMPARISON →
SWEET GRASS COUNTY VS
Park County
Income $70,047 −9%
Home value $467,500 +42%
Population 18,214 +384%
SEE FULL COMPARISON →
SWEET GRASS COUNTY VS
Wheatland County
Income $49,489 −36%
Home value $180,800 −45%
Population 2,100 −44%
SEE FULL COMPARISON →
SWEET GRASS COUNTY VS
Golden Valley County
Income $58,333 −24%
Home value $212,200 −36%
Population 844 −78%
SEE FULL COMPARISON →
Frequently asked
How many people live in Sweet Grass County, Montana? Sweet Grass County, Montana has about 3,720 residents according to the 2024 American Community Survey.
What is the median household income in Sweet Grass County, Montana? The typical household in Sweet Grass County, Montana earns about $77,000 a year. Half of households make more than that, and half make less.
Is Sweet Grass County, Montana expensive? In Sweet Grass County, Montana, the median home is worth about $330,100, and the typical rent is about $1,149 a month.
How educated are people in Sweet Grass County, Montana? About 24.4% of adults age 25 and over in Sweet Grass County, Montana hold a bachelor's degree or higher.
What is the poverty rate in Sweet Grass County, Montana? About 7.9% of people in Sweet Grass County, Montana live below the federal poverty line.
Has Sweet Grass County, Montana grown since 1990? Yes, Sweet Grass County, Montana has grown since 1990. The population has added about 566 residents, a change of about 18 percent over that period.
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