Borough · Pennsylvania
Millbourne, Pennsylvania
Millbourne, borough, in Delaware County, Pennsylvania. Millbourne had 1,210 residents on July 1, 2025 by the Census Bureau's estimate, down 0.3% since 2020; the 2020 Census counted 1,212 and the ACS 2020-2024 5-year estimates put it at 1,467 (±399). GEOID 4249504.
Residents, July 2025 estimate
1,210
Census Bureau estimate (no margin published)
2020 Census count: 1,212 · ACS 2020-2024: 1,467 ±399
Median household income
$54,219
±$24,194 (90% margin)
Pennsylvania: $77,971
Median home value
$266,700
±$47,579 (90% margin)
Pennsylvania: $254,500
Median gross rent
$1,016
±$112 (90% margin)
Pennsylvania: $1,209
Where is Millbourne and what county is it in?
Millbourne is a borough in Delaware County, Pennsylvania. It covers 0.1 square miles of land, 16,378 residents per square mile in 2020.
Millbourne is in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan statistical area, which takes in 11 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Millbourne, and is it growing?
The Census Bureau estimates that 1,210 people lived in Millbourne on July 1, 2025, down 0.3% since 2020, while Pennsylvania grew 0.4%. The 2020 Census counted 1,212 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,467 (±399).
| Measure | Millbourne | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,467 ±399 | 579,222 | no clear change |
| Households | 567 ±160 | 216,946 | +221 |
| Average household size | 2.59 ±0.45 | 2.56 | −0.83 |
| Housing units | 644 ±157 | 229,715 | +256 |
Millbourne's population since 2000
From 943 in 2000 to 1,210 in 2025: up 28.3%. The 2000, 2010 and 2020 figures are census counts, each for Millbourne 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 Millbourne?
The median resident of Millbourne is 37.6 years old; 20.4% are under 18 and 19.3% are 65 or older. The largest group is non-Hispanic Asian residents at 44.9%, then non-Hispanic Black residents at 29.9%. 44.2% of residents were born outside the United States.
| Measure | Millbourne | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.6 ±7.2 | 39.1 | no clear change |
| Under 18 years | 20.4% ±8.0 pts | 22.0% | – |
| 65 years and over | 19.3% ±7.7 pts | 17.4% | – |
| Male | 54.9% ±8.5 pts | 48.4% | – |
| Hispanic or Latino (any race) | 6.1% ±9.3 pts | 5.0% | – |
| White alone, not Hispanic | 14.5% ±8.6 pts | 62.4% | – |
| Black or African American alone, not Hispanic | 29.9% ±12.7 pts | 21.9% | +15.5 pts |
| Asian alone, not Hispanic | 44.9% ±14.6 pts | 6.3% | −22.6 pts |
| American Indian and Alaska Native alone, not Hispanic | 2.9% ±3.3 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±2.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.6% ±2.3 pts | 3.8% | – |
| Some other race alone, not Hispanic | 0.0% ±2.2 pts | 0.5% | – |
| Born outside the United States | 44.2% ±11.3 pts | 11.2% | −19.6 pts |
| Speak a language other than English at home (age 5+) | 55.5% ±12.1 pts | 13.5% | – |
| Civilian veterans (age 18+) | 3.3% ±3.8 pts | 4.9% | – |
| With a disability | 17.6% ±7.1 pts | 12.5% | – |
| No health insurance coverage | 9.0% ±7.0 pts | 4.6% | – |
| High school graduate or higher (age 25+) | 84.7% ±8.9 pts | 93.9% | – |
| Bachelor's degree or higher (age 25+) | 29.9% ±10.2 pts | 41.9% | no clear change |
| Graduate or professional degree (age 25+) | 12.3% ±6.2 pts | 18.4% | – |
| Lived in the same house a year earlier | 87.0% ±8.2 pts | 90.7% | – |
| Moved from another state in the past year | 0.0% ±2.2 pts | 1.6% | – |
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 Millbourne earn?
Half of Millbourne's 567 households earn less than $54,219 a year (±$24,194), against $89,546 in Delaware County and $77,971 in Pennsylvania. In 2015-2019 it was $56,366 in 2024 dollars; the margins of error cannot tell the two periods apart. 24.3% of residents live below the poverty line.
| Measure | Millbourne | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $54,219 ±$24,194 | $89,546 | no clear change |
| Mean household income | $86,666 ±$28,990 | $128,465 | – |
| Per capita income | $34,833 ±$9,943 | $49,673 | no clear change |
| People below the poverty line | 24.3% ±11.5 pts | 10.2% | no clear change |
| Children under 18 below the poverty line | 38.7% ±24.5 pts | 13.2% | no clear change |
| Households receiving SNAP | 19.6% ±10.1 pts | 13.3% | – |
| Households with a computer | 92.1% ±6.2 pts | 96.4% | – |
| Households with a broadband subscription | 88.9% ±7.1 pts | 93.3% | – |
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 Millbourne?
Owners occupy 34.2% of Millbourne's occupied homes and renters 65.8%. The median owner-occupied home is valued at $266,700 by its owner (±$47,579). The median renter pays $1,016 a month including utilities, and 36.7% of renters pay 35% or more of their income on rent.
| Measure | Millbourne | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $266,700 ±$47,579 | $332,200 | +$88,372 |
| Median gross rent | $1,016 ±$112 | $1,372 | no clear change |
| Renters paying 35% or more of income on rent | 36.7% ±19.3 pts | 45.9% | no clear change |
| Median monthly owner costs, with a mortgage | $1,846 ±$546 | $2,222 | – |
| Owner-occupied homes | 34.2% ±13.7 pts | 69.6% | no clear change |
| Renter-occupied homes | 65.8% ±13.7 pts | 30.4% | – |
| Housing units | 644 ±157 | 229,715 | +256 |
| Homeowner vacancy rate | 0.0% ±15.4 pts | 0.6% | – |
| Rental vacancy rate | 9.5% ±8.7 pts | 4.8% | – |
| Single-family detached homes | 4.3% ±4.0 pts | 43.6% | – |
| Mobile homes | 0.9% ±1.4 pts | 0.3% | – |
| Built 2020 or later | 0.0% ±4.9 pts | 0.6% | – |
| Built 2010 to 2019 | 1.4% ±2.6 pts | 2.9% | – |
| Built 1939 or earlier | 33.1% ±12.4 pts | 22.1% | – |
| Households with no vehicle | 31.9% ±15.8 pts | 9.6% | – |
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 Millbourne building?
Builders took permits for 0 new housing units in Millbourne in 2025 (0 in single-family houses), 0.0 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 Millbourne work and get to work?
34.0% of Millbourne's workers drive alone. The average trip to work takes 30.6 minutes.
| Measure | Millbourne | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.8% ±9.9 pts | 65.6% | – |
| Unemployment rate | 3.0% ±3.3 pts | 6.9% | – |
| Drove alone to work | 34.0% ±12.6 pts | 64.4% | – |
| Carpooled | 8.3% ±9.2 pts | 6.6% | – |
| Public transportation | 29.1% ±16.0 pts | 5.9% | – |
| Walked | 8.2% ±5.8 pts | 3.3% | – |
| Worked from home | 7.7% ±7.6 pts | 18.0% | – |
| Mean travel time to work | 30.6 min ±6.9 | 28.1 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 Millbourne?
No census tract lies mostly in Millbourne; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 4105Delaware County | 4,688 | $63,355 |
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 Millbourne) · Census block assignment files
How does Millbourne compare with other places in Pennsylvania?
By the Census Bureau's July 2025 estimates, Millbourne is the 9,563rd-most populous of the 19,476 U.S. incorporated places that have one and the 555th-most populous of 1,012 in Pennsylvania.
Millbourne ranks 1,892nd 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 | 555th | 1,012 |
| Growth 2020-2025 (PEP) | 902nd | 1,764 |
| Residents per square mile | 1st | 2,159 |
| Median household income | 1,892nd | 2,136 |
| Per capita income | 1,486th | 2,157 |
| Median home value | 714th | 2,146 |
| Median gross rent | 1,038th | 1,963 |
| Poverty rate | 83rd | 1,606 |
| Bachelor's degree or higher | 817th | 2,129 |
| Median age | 1,825th | 2,157 |
| Owner-occupied share | 2,133rd | 2,149 |
| Travel time to work | 396th | 2,156 |
Millbourne's figures with every place in Pennsylvania (CSV)
Every place in Pennsylvania, sortable · Compare Millbourne 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 Millbourne?
18 of the 57 figures for Millbourne 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 Millbourne 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 Millbourne.