Middlesex Flag

Middlesex

County:
Butler County
County Seat:
No
Area (mi²):
23.124
State:
Pennsylvania

Middlesex is located in Butler County, Pennsylvania. Middlesex has a 2025 population of 7,481 . Middlesex is currently growing at a rate of 0.58% annually and its population has increased by 8.59% since the most recent census, which recorded a population of 6,889 in 2020.

The average household income in Middlesex is $122,133 with a poverty rate of 8.28%. The median age in Middlesex is 44.3 years: 43.1 years for males, and 47.1 years for females. For every 100 females there are 103.6 males.

7.5K
Total Population
324
Density (mi²)
43 0.58%
Growth

Middlesex Population

Middlesex Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Middlesex includes 97.19% White, and smaller percentages for Black or African American, Two or more races, other race, Asian and multiracial populations.

Population by Race

White (97.19%)

Black or African American (1.51%)

Two or more races (0.79%)

Other race (0.42%)

Asian (0.08%)

Race
Population
Percentage (of total)
White6,89197.19%
Black or African American1071.51%
Two or more races560.79%
Other race300.42%
Asian60.08%

Middlesex Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Middlesex's average per capita income is $60,643. Household income levels show a median of $108,032. The poverty rate stands at 8.28%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$112,477-
Families$110,917$135,518
Households$108,032$122,133
Non Families$48,839$87,665

$60,643

Average Income

$108,032

Median Household Income

8.28%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)