Town · Montana
Darby, Montana
Darby, town, in Ravalli County, Montana. Darby had 888 residents on July 1, 2025 by the Census Bureau's estimate, up 12.5% since 2020; the 2020 Census counted 783 and the ACS 2020-2024 5-year estimates put it at 527 (±181). GEOID 3019300.
Residents, July 2025 estimate
888
Census Bureau estimate (no margin published)
2020 Census count: 783 · ACS 2020-2024: 527 ±181
Median household income
$43,627
±$6,138 (90% margin)
Montana: $72,509
Median home value
$327,100
±$74,528 (90% margin)
Montana: $375,800
Median gross rent
$889
±$96 (90% margin)
Montana: $1,081
Where is Darby and what county is it in?
Darby is a town in Ravalli County, Montana. It covers 0.7 square miles of land, 1,176 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Darby, and is it growing?
The Census Bureau estimates that 888 people lived in Darby on July 1, 2025, up 12.5% since 2020, faster than Montana (+5.6%). The 2020 Census counted 783 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 527 (±181).
| Measure | Darby | Ravalli County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 527 ±181 | 46,727 | no clear change |
| Households | 274 ±98 | 18,661 | no clear change |
| Average household size | 1.91 ±0.34 | 2.48 | no clear change |
| Housing units | 332 ±106 | 21,179 | no clear change |
Darby's population since 2000
From 710 in 2000 to 888 in 2025: up 25.1%. The 2000, 2010 and 2020 figures are census counts, each for Darby as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. 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.
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); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Darby?
The median resident of Darby is 57.2 years old. The largest group is non-Hispanic white residents at 88.2%, then non-Hispanic residents of two or more races at 10.1%.
| Measure | Darby | Ravalli County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 57.2 ±10.8 | 48.7 | no clear change |
| Under 18 years | 6.3% ±4.4 pts | 18.6% | – |
| 65 years and over | 25.6% ±12.2 pts | 27.0% | – |
| Male | 49.9% ±9.5 pts | 50.2% | – |
| Hispanic or Latino (any race) | 1.3% ±1.9 pts | 4.1% | – |
| White alone, not Hispanic | 88.2% ±7.5 pts | 88.6% | no clear change |
| Black or African American alone, not Hispanic | 0.2% ±0.4 pts | 0.3% | – |
| Asian alone, not Hispanic | 0.0% ±5.5 pts | 0.7% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.5 pts | 0.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±5.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 10.1% ±7.5 pts | 4.8% | – |
| Some other race alone, not Hispanic | 0.0% ±5.5 pts | 0.8% | – |
| Born outside the United States | 2.3% ±3.5 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 0.0% ±5.6 pts | 3.3% | – |
| Civilian veterans (age 18+) | 5.9% ±3.5 pts | 11.0% | – |
| With a disability | 37.0% ±13.2 pts | 18.1% | – |
| No health insurance coverage | 5.3% ±5.0 pts | 10.5% | – |
| High school graduate or higher (age 25+) | 89.9% ±6.6 pts | 93.4% | – |
| Bachelor's degree or higher (age 25+) | 15.0% ±8.2 pts | 28.7% | no clear change |
| Graduate or professional degree (age 25+) | 8.0% ±6.5 pts | 10.9% | – |
| Lived in the same house a year earlier | 89.0% ±7.4 pts | 89.8% | – |
| Moved from another state in the past year | 1.5% ±2.3 pts | 3.6% | – |
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 Darby earn?
Half of Darby's 274 households earn less than $43,627 a year (±$6,138), against $71,283 in Ravalli County and $72,509 in Montana. In 2015-2019 the median was $33,348 in 2024 dollars, so it rose by $10,279 after inflation.
| Measure | Darby | Ravalli County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $43,627 ±$6,138 | $71,283 | +$10,279 |
| Mean household income | $75,177 ±$33,165 | $93,389 | – |
| Per capita income | $42,462 ±$16,021 | $39,624 | +$22,948 |
| People below the poverty line | 13.5% ±9.6 pts | 8.8% | – |
| Children under 18 below the poverty line | 0.0% ±49.6 pts | 10.3% | – |
| Households receiving SNAP | 21.2% ±11.7 pts | 6.5% | – |
| Households with a computer | 88.3% ±8.3 pts | 94.0% | – |
| Households with a broadband subscription | 83.2% ±9.6 pts | 87.1% | – |
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 Darby?
Owners occupy 44.9% of Darby's occupied homes and renters 55.1%. The median owner-occupied home is valued at $327,100 by its owner (±$74,528). The median renter pays $889 a month including utilities, and 40.9% of renters pay 35% or more of their income on rent.
| Measure | Darby | Ravalli County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $327,100 ±$74,528 | $476,600 | +$146,311 |
| Median gross rent | $889 ±$96 | $1,054 | no clear change |
| Renters paying 35% or more of income on rent | 40.9% ±22.5 pts | 32.0% | no clear change |
| Median monthly owner costs, with a mortgage | $1,445 ±$248 | $1,656 | – |
| Owner-occupied homes | 44.9% ±15.8 pts | 79.4% | no clear change |
| Renter-occupied homes | 55.1% ±15.8 pts | 20.6% | – |
| Housing units | 332 ±106 | 21,179 | no clear change |
| Homeowner vacancy rate | 7.5% ±11.1 pts | 1.1% | – |
| Rental vacancy rate | 4.2% ±8.0 pts | 7.1% | – |
| Single-family detached homes | 49.4% ±15.6 pts | 79.5% | – |
| Mobile homes | 29.8% ±17.4 pts | 8.6% | – |
| Built 2020 or later | 0.0% ±8.6 pts | 2.5% | – |
| Built 2010 to 2019 | 4.8% ±4.8 pts | 10.3% | – |
| Built 1939 or earlier | 13.3% ±8.8 pts | 11.1% | – |
| Households with no vehicle | 4.4% ±5.3 pts | 4.1% | – |
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 Darby building?
Builders took permits for 5 new housing units in Darby in 2025 (5 in single-family houses), 5.6 per 1,000 residents against 4.6 across Montana.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Darby work and get to work?
79.7% of Darby's workers drive alone. The average trip to work takes 16.6 minutes.
| Measure | Darby | Ravalli County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 54.7% ±11.7 pts | 55.1% | – |
| Unemployment rate | 1.5% ±3.1 pts | 3.2% | – |
| Drove alone to work | 79.7% ±14.0 pts | 72.6% | – |
| Carpooled | 6.0% ±7.4 pts | 8.9% | – |
| Public transportation | 0.4% ±1.0 pts | 0.2% | – |
| Walked | 4.1% ±5.1 pts | 2.1% | – |
| Worked from home | 9.8% ±11.9 pts | 14.2% | – |
| Mean travel time to work | 16.6 min ±5.7 | 24.4 min | no 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 census tracts are in Darby?
No census tract lies mostly in Darby; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 7Ravalli County | 1,866 | $60,250 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Darby) · Census block assignment files
How does Darby compare with other places in Montana?
By the Census Bureau's July 2025 estimates, Darby is the 10,789th-most populous of the 19,476 U.S. incorporated places that have one and the 61st-most populous of 127 in Montana.
Darby is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 61st | 127 |
Darby's figures with every place in Montana (CSV)
Every place in Montana, sortable · Compare Darby with other places
Source: PlainCities ranks computed 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 reliable are the figures for Darby?
26 of the 57 figures for Darby on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
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 Darby 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' public schools in Darby.