City · Wyoming
Buffalo, Wyoming
Buffalo, city, in Johnson County, Wyoming. Buffalo had 4,733 residents on July 1, 2025 by the Census Bureau's estimate, up 6.9% since 2020; the 2020 Census counted 4,415 and the ACS 2020-2024 5-year estimates put it at 4,572 (±16). GEOID 5610685.
Residents, July 2025 estimate
4,733
Census Bureau estimate (no margin published)
2020 Census count: 4,415 · ACS 2020-2024: 4,572 ±16
Median household income
$62,629
±$7,956 (90% margin)
Wyoming: $76,176
Median home value
$300,500
±$28,664 (90% margin)
Wyoming: $309,700
Median gross rent
$1,019
±$250 (90% margin)
Wyoming: $992
Where is Buffalo and what county is it in?
Buffalo is a city in Johnson County, Wyoming. It covers 4.5 square miles of land, 972 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 Buffalo, and is it growing?
The Census Bureau estimates that 4,733 people lived in Buffalo on July 1, 2025, up 6.9% since 2020, faster than Wyoming (+2.1%). The 2020 Census counted 4,415 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 4,572 (±16).
| Measure | Buffalo | Johnson County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,572 ±16 | 8,686 | no clear change |
| Households | 2,272 ±178 | 3,932 | no clear change |
| Average household size | 1.95 ±0.15 | 2.17 | no clear change |
| Housing units | 2,435 ±170 | 4,659 | no clear change |
Buffalo's population since 2000
From 3,900 in 2000 to 4,733 in 2025: up 21.4%. The 2000, 2010 and 2020 figures are census counts, each for Buffalo 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 Buffalo?
The median resident of Buffalo is 48.0 years old; 17.6% are under 18 and 31.4% are 65 or older. The largest group is non-Hispanic white residents at 92.0%, then Hispanic or Latino residents (of any race) at 2.6%.
| Measure | Buffalo | Johnson County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 48.0 ±6.6 | 47.3 | no clear change |
| Under 18 years | 17.6% ±3.2 pts | 19.3% | – |
| 65 years and over | 31.4% ±4.4 pts | 27.5% | – |
| Male | 48.3% ±3.2 pts | 51.3% | – |
| Hispanic or Latino (any race) | 2.6% ±1.9 pts | 4.3% | – |
| White alone, not Hispanic | 92.0% ±3.5 pts | 90.0% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±0.1 pts | 0.0% | – |
| Asian alone, not Hispanic | 1.0% ±1.3 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.8% ±1.2 pts | 1.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.8 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.5% ±1.3 pts | 2.9% | – |
| Some other race alone, not Hispanic | 1.0% ±1.3 pts | 0.6% | – |
| Born outside the United States | 0.7% ±0.9 pts | 2.5% | – |
| Speak a language other than English at home (age 5+) | 2.8% ±3.1 pts | 3.4% | – |
| Civilian veterans (age 18+) | 11.2% ±3.7 pts | 9.4% | – |
| With a disability | 14.7% ±4.7 pts | 14.5% | – |
| No health insurance coverage | 9.0% ±4.4 pts | 9.3% | −9.2 pts |
| High school graduate or higher (age 25+) | 96.3% ±2.3 pts | 94.1% | – |
| Bachelor's degree or higher (age 25+) | 29.9% ±7.1 pts | 30.3% | no clear change |
| Graduate or professional degree (age 25+) | 10.6% ±4.1 pts | 12.8% | – |
| Lived in the same house a year earlier | 84.8% ±6.8 pts | 86.1% | – |
| Moved from another state in the past year | 5.3% ±3.6 pts | 7.9% | – |
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 Buffalo earn?
Half of Buffalo's 2,272 households earn less than $62,629 a year (±$7,956), against $64,871 in Johnson County and $76,176 in Wyoming. In 2015-2019 it was $72,216 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Buffalo | Johnson County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $62,629 ±$7,956 | $64,871 | no clear change |
| Mean household income | $74,662 ±$11,404 | $90,983 | – |
| Per capita income | $39,388 ±$6,645 | $42,215 | no clear change |
| People below the poverty line | 9.9% ±6.6 pts | 9.1% | – |
| Children under 18 below the poverty line | 10.3% ±13.5 pts | 10.3% | – |
| Households receiving SNAP | 1.1% ±1.6 pts | 1.5% | – |
| Households with a computer | 94.8% ±3.3 pts | 95.1% | – |
| Households with a broadband subscription | 88.8% ±5.9 pts | 86.3% | – |
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 Buffalo?
Owners occupy 78.6% of Buffalo's occupied homes and renters 21.4%. The median owner-occupied home is valued at $300,500 by its owner (±$28,664). The median renter pays $1,019 a month including utilities.
| Measure | Buffalo | Johnson County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $300,500 ±$28,664 | $326,800 | no clear change |
| Median gross rent | $1,019 ±$250 | $1,029 | no clear change |
| Renters paying 35% or more of income on rent | 15.8% ±11.7 pts | 24.0% | – |
| Median monthly owner costs, with a mortgage | $1,424 ±$71 | $1,482 | – |
| Owner-occupied homes | 78.6% ±6.0 pts | 82.3% | +17.6 pts |
| Renter-occupied homes | 21.4% ±6.0 pts | 17.7% | – |
| Housing units | 2,435 ±170 | 4,659 | no clear change |
| Homeowner vacancy rate | 0.0% ±2.0 pts | 0.0% | – |
| Rental vacancy rate | 7.2% ±9.2 pts | 5.3% | – |
| Single-family detached homes | 72.0% ±6.8 pts | 78.0% | – |
| Mobile homes | 8.7% ±4.3 pts | 11.8% | – |
| Built 2020 or later | 1.4% ±1.6 pts | 1.6% | – |
| Built 2010 to 2019 | 6.2% ±3.2 pts | 9.5% | – |
| Built 1939 or earlier | 18.6% ±7.2 pts | 13.7% | – |
| Households with no vehicle | 4.2% ±2.6 pts | 2.7% | – |
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 Buffalo building?
Builders took permits for 15 new housing units in Buffalo in 2025 (11 in single-family houses), 3.2 per 1,000 residents against 3.8 across Wyoming.
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 Buffalo work and get to work?
68.0% of Buffalo's workers drive alone and 17.0% work from home. The average trip to work takes 12.9 minutes.
| Measure | Buffalo | Johnson County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 57.5% ±5.5 pts | 59.0% | – |
| Unemployment rate | 5.3% ±4.3 pts | 3.1% | – |
| Drove alone to work | 68.0% ±7.6 pts | 68.9% | – |
| Carpooled | 3.4% ±2.9 pts | 3.6% | – |
| Public transportation | 0.5% ±1.1 pts | 0.3% | – |
| Walked | 10.1% ±6.4 pts | 7.1% | – |
| Worked from home | 17.0% ±6.0 pts | 19.2% | – |
| Mean travel time to work | 12.9 min ±4.0 | 16.7 min | −6.2 min |
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 Buffalo?
2 census tracts lie mostly in Buffalo (2020 census blocks). Their median household incomes run from $57,929 (Tract 9552.01) to $64,375 (Tract 9552.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9552.02Johnson County | 4,106 | $64,375 |
| Tract 9552.01Johnson County | 2,421 | $57,929 |
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 Buffalo) · Census block assignment files
How does Buffalo compare with other places in Wyoming?
By the Census Bureau's July 2025 estimates, Buffalo is the 5,056th-most populous of the 19,476 U.S. incorporated places that have one and the 17th-most populous of 99 in Wyoming.
Buffalo ranks 42nd of 54 places in Wyoming with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 17th | 99 |
| Growth 2020-2025 (PEP) | 6th | 42 |
| Residents per square mile | 30th | 56 |
| Median household income | 42nd | 54 |
| Per capita income | 26th | 56 |
| Median home value | 19th | 53 |
| Median gross rent | 17th | 48 |
| Bachelor's degree or higher | 22nd | 54 |
| Median age | 11th | 56 |
| Owner-occupied share | 12th | 55 |
| Work from home | 6th | 26 |
| Travel time to work | 45th | 56 |
Buffalo's figures with every place in Wyoming (CSV)
Every place in Wyoming, sortable · Compare Buffalo 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 Buffalo?
19 of the 57 figures for Buffalo 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 Buffalo 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 Buffalo.