Township · Pennsylvania
Middlesex Township, Butler County, Pennsylvania
Middlesex Township, Butler County, township, in Butler County, Pennsylvania. Middlesex Township, Butler County had 7,513 residents on July 1, 2025 by the Census Bureau's estimate, up 10.0% since 2020; the 2020 Census counted 6,820 and the ACS 2020-2024 5-year estimates put it at 7,236 (±20). GEOID 4201949056.
Residents, July 2025 estimate
7,513
Census Bureau estimate (no margin published)
2020 Census count: 6,820 · ACS 2020-2024: 7,236 ±20
Median household income
$114,036
±$3,293 (90% margin)
Pennsylvania: $77,971
Median home value
$412,400
±$51,234 (90% margin)
Pennsylvania: $254,500
Median gross rent
$793
±$438 (90% margin)
Pennsylvania: $1,209
Where is Middlesex Township, Butler County and what county is it in?
Middlesex Township, Butler County is a township in Butler County, Pennsylvania. It covers 23.1 square miles of land, 295 residents per square mile in 2020.
Middlesex Township, Butler County is in the Pittsburgh, PA metropolitan statistical area, which takes in 8 counties (Census Bureau delineation, July 2023).
Middlesex Township, Butler County is the same area as Census Tract 9128 of Butler County: the tract's figures are Middlesex Township, Butler County's own.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Middlesex Township, Butler County, and is it growing?
The Census Bureau estimates that 7,513 people lived in Middlesex Township, Butler County on July 1, 2025, up 10.0% since 2020, faster than Pennsylvania (+0.4%). The 2020 Census counted 6,820 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 7,236 (±20).
| Measure | Middlesex Township, Butler County | Butler County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 7,236±20 | 197,254 | +1,599 |
| Households | 2,740±167 | 80,824 | +473 |
| Average household size | 2.64±0.16 | 2.37 | no clear change |
| Housing units | 3,032±208 | 87,382 | +528 |
Middlesex Township, Butler County's population since 2000
From 5,586 in 2000 to 7,513 in 2025: up 34.5%. The 2000, 2010 and 2020 figures are census counts, each for Middlesex Township, Butler County 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 Middlesex Township, Butler County?
The median resident of Middlesex Township, Butler County is 43.6 years old; 22.6% are under 18 and 18.3% are 65 or older. The largest group is non-Hispanic white residents at 94.2%, then Hispanic or Latino residents (of any race) at 3.1%.
| Measure | Middlesex Township, Butler County | Butler County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 43.6±3.9 | 43.4 | no clear change |
| Under 18 years | 22.6%±2.6 pts | 19.3% | – |
| 65 years and over | 18.3%±4.1 pts | 20.6% | – |
| Male | 49.1%±3.2 pts | 49.8% | – |
| Hispanic or Latino (any race) | 3.1%±2.2 pts | 2.0% | – |
| White alone, not Hispanic | 94.2%±3.3 pts | 92.2% | no clear change |
| Black or African American alone, not Hispanic | 1.7%±2.3 pts | 1.1% | – |
| Asian alone, not Hispanic | 0.1%±0.2 pts | 1.4% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.0%±1.3 pts | 2.7% | – |
| Some other race alone, not Hispanic | 0.0%±0.4 pts | 0.5% | – |
| Born outside the United States | 2.2%±1.6 pts | 2.4% | – |
| Speak a language other than English at home (age 5+) | 5.0%±2.8 pts | 3.7% | – |
| Civilian veterans (age 18+) | 7.0%±2.8 pts | 7.2% | – |
| With a disability | 10.0%±3.2 pts | 13.1% | – |
| No health insurance coverage | 3.2%±3.1 pts | 3.4% | – |
| High school graduate or higher (age 25+) | 97.8%±2.4 pts | 95.7% | – |
| Bachelor's degree or higher (age 25+) | 47.9%±7.0 pts | 39.4% | no clear change |
| Graduate or professional degree (age 25+) | 15.9%±4.3 pts | 14.8% | – |
| Lived in the same house a year earlier | 93.9%±3.5 pts | 89.6% | – |
| Moved from another state in the past year | 0.3%±0.5 pts | 1.3% | – |
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 Middlesex Township, Butler County earn?
Half of Middlesex Township, Butler County's 2,740 households earn less than $114,036 a year (±$3,293), against $89,843 in Butler County and $77,971 in Pennsylvania. In 2015-2019 the median was $87,921 in 2024 dollars, so it rose by $26,115 after inflation.
| Measure | Middlesex Township, Butler County | Butler County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $114,036±$3,293 | $89,843 | +$26,115 |
| Mean household income | $143,385±$25,939 | $116,887 | – |
| Per capita income | $54,658±$9,550 | $49,125 | no clear change |
| People below the poverty line | 7.0%±4.9 pts | 8.1% | – |
| Children under 18 below the poverty line | 5.6%±5.5 pts | 7.3% | – |
| Households receiving SNAP | 3.9%±3.5 pts | 9.0% | – |
| Households with a computer | 96.1%±1.9 pts | 94.2% | – |
| Households with a broadband subscription | 90.4%±4.8 pts | 90.6% | – |
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 Middlesex Township, Butler County?
Owners occupy 93.1% of Middlesex Township, Butler County's occupied homes and renters 6.9%. The median owner-occupied home is valued at $412,400 by its owner (±$51,234). The median renter pays $793 a month including utilities, and 56.6% of renters pay 35% or more of their income on rent.
| Measure | Middlesex Township, Butler County | Butler County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $412,400±$51,234 | $294,200 | +$101,650 |
| Median gross rent | $793±$438 | $1,041 | – |
| Renters paying 35% or more of income on rent | 56.6%±36.1 pts | 32.6% | no clear change |
| Median monthly owner costs, with a mortgage | $2,116±$381 | $1,845 | – |
| Owner-occupied homes | 93.1%±4.2 pts | 76.9% | no clear change |
| Renter-occupied homes | 6.9%±4.2 pts | 23.1% | – |
| Housing units | 3,032±208 | 87,382 | +528 |
| Homeowner vacancy rate | 4.7%±5.1 pts | 0.9% | – |
| Rental vacancy rate | 0.0%±15.8 pts | 5.2% | – |
| Single-family detached homes | 86.4%±6.2 pts | 69.5% | – |
| Mobile homes | 11.6%±6.2 pts | 6.8% | – |
| Built 2020 or later | 6.1%±3.6 pts | 2.4% | – |
| Built 2010 to 2019 | 13.9%±4.5 pts | 9.6% | – |
| Built 1939 or earlier | 12.5%±7.9 pts | 15.5% | – |
| Households with no vehicle | 0.7%±1.0 pts | 5.5% | – |
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 Middlesex Township, Butler County building?
Builders took permits for 10 new housing units in Middlesex Township, Butler County in 2025 (7 in single-family houses), 1.3 per 1,000 residents against 2.0 across Pennsylvania.
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 Middlesex Township, Butler County work and get to work?
75.0% of Middlesex Township, Butler County's workers drive alone and 20.2% work from home. The average trip to work takes 37.4 minutes. The unemployment rate in 2020-2024 averaged 4.3%.
| Measure | Middlesex Township, Butler County | Butler County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 67.6%±5.7 pts | 62.5% | – |
| Unemployment rate | 4.3%±2.8 pts | 4.4% | – |
| Drove alone to work | 75.0%±6.5 pts | 74.1% | – |
| Carpooled | 4.3%±3.0 pts | 5.9% | – |
| Public transportation | 0.0%±0.9 pts | 0.3% | – |
| Walked | 0.5%±0.8 pts | 1.9% | – |
| Worked from home | 20.2%±5.7 pts | 16.8% | +13.7 pts |
| Mean travel time to work | 37.4 min±4.6 | 27.4 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 Middlesex Township, Butler County?
1 census tract lies mostly in Middlesex Township, Butler County (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9128Butler County | 7,236 | $114,036 |
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 Middlesex Township, Butler County) · Census block assignment files
How does Middlesex Township, Butler County compare with other places in Pennsylvania?
By the Census Bureau's July 2025 estimates, Middlesex Township, Butler County is the 1,627th-most populous of the 16,079 U.S. towns and townships that have one and the 271st-most populous of 1,542 in Pennsylvania.
Middlesex Township, Butler County ranks 272nd of 2,136 places in Pennsylvania with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 271st | 1,542 |
| Growth 2020-2025 (PEP) | 37th | 1,764 |
| Residents per square mile | 1,320th | 2,159 |
| Median household income | 272nd | 2,136 |
| Per capita income | 298th | 2,157 |
| Median home value | 209th | 2,146 |
| Median gross rent | 1,624th | 1,963 |
| Bachelor's degree or higher | 278th | 2,129 |
| Median age | 1,119th | 2,157 |
| Owner-occupied share | 187th | 2,149 |
| Work from home | 324th | 1,710 |
| Travel time to work | 81st | 2,156 |
Middlesex Township, Butler County's figures with every place in Pennsylvania (CSV)
Every place in Pennsylvania, sortable · Compare Middlesex Township, Butler County 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 Middlesex Township, Butler County?
19 of the 57 figures for Middlesex Township, Butler County 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 Middlesex Township, Butler 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.