Borough · Pennsylvania
Darby, Pennsylvania
Darby, borough, in Delaware County, Pennsylvania. Darby had 10,666 residents on July 1, 2025 by the Census Bureau's estimate, down 0.3% since 2020; the 2020 Census counted 10,715 and the ACS 2020-2024 5-year estimates put it at 10,687 (±21). GEOID 4218152.
Residents, July 2025 estimate
10,666
Census Bureau estimate (no margin published)
2020 Census count: 10,715 · ACS 2020-2024: 10,687 ±21
Median household income
$39,863
±$9,978 (90% margin)
Pennsylvania: $77,971
Median home value
$117,900
±$32,225 (90% margin)
Pennsylvania: $254,500
Median gross rent
$1,308
±$161 (90% margin)
Pennsylvania: $1,209
Where is Darby and what county is it in?
Darby is a borough in Delaware County, Pennsylvania. It covers 0.8 square miles of land, 12,726 residents per square mile in 2020.
Darby 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 Darby, and is it growing?
The Census Bureau estimates that 10,666 people lived in Darby on July 1, 2025, down 0.3% since 2020, while Pennsylvania grew 0.4%. The 2020 Census counted 10,715 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 10,687 (±21).
| Measure | Darby | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 10,687 ±21 | 579,222 | no clear change |
| Households | 3,992 ±411 | 216,946 | +555 |
| Average household size | 2.58 ±0.27 | 2.56 | −0.39 |
| Housing units | 4,545 ±436 | 229,715 | no clear change |
Darby's population since 2000
From 10,299 in 2000 to 10,666 in 2025: up 3.6%. 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 34.9 years old; 28.8% are under 18 and 12.8% are 65 or older. The largest group is non-Hispanic Black residents at 84.0%, then non-Hispanic white residents at 9.8%. 19.1% of residents were born outside the United States.
| Measure | Darby | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 34.9 ±3.4 | 39.1 | no clear change |
| Under 18 years | 28.8% ±4.8 pts | 22.0% | – |
| 65 years and over | 12.8% ±2.5 pts | 17.4% | – |
| Male | 46.6% ±5.2 pts | 48.4% | – |
| Hispanic or Latino (any race) | 2.1% ±2.1 pts | 5.0% | – |
| White alone, not Hispanic | 9.8% ±3.2 pts | 62.4% | −5.0 pts |
| Black or African American alone, not Hispanic | 84.0% ±4.6 pts | 21.9% | no clear change |
| Asian alone, not Hispanic | 0.3% ±0.3 pts | 6.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.7% ±3.5 pts | 3.8% | – |
| Some other race alone, not Hispanic | 0.1% ±0.1 pts | 0.5% | – |
| Born outside the United States | 19.1% ±5.3 pts | 11.2% | no clear change |
| Speak a language other than English at home (age 5+) | 14.7% ±4.6 pts | 13.5% | – |
| Civilian veterans (age 18+) | 6.7% ±2.9 pts | 4.9% | – |
| With a disability | 21.5% ±5.0 pts | 12.5% | – |
| No health insurance coverage | 8.5% ±3.8 pts | 4.6% | no clear change |
| High school graduate or higher (age 25+) | 88.8% ±2.5 pts | 93.9% | – |
| Bachelor's degree or higher (age 25+) | 15.5% ±4.4 pts | 41.9% | no clear change |
| Graduate or professional degree (age 25+) | 7.5% ±3.3 pts | 18.4% | – |
| Lived in the same house a year earlier | 89.6% ±4.4 pts | 90.7% | – |
| Moved from another state in the past year | 0.4% ±0.5 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 Darby earn?
Half of Darby's 3,992 households earn less than $39,863 a year (±$9,978), against $89,546 in Delaware County and $77,971 in Pennsylvania. In 2015-2019 the median was $60,663 in 2024 dollars, so it fell by $20,800 after inflation. 30.0% of residents live below the poverty line.
| Measure | Darby | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $39,863 ±$9,978 | $89,546 | −$20,800 |
| Mean household income | $55,390 ±$7,866 | $128,465 | – |
| Per capita income | $21,888 ±$2,780 | $49,673 | −$3,712 |
| People below the poverty line | 30.0% ±7.1 pts | 10.2% | no clear change |
| Children under 18 below the poverty line | 40.5% ±14.2 pts | 13.2% | no clear change |
| Households receiving SNAP | 43.5% ±7.4 pts | 13.3% | – |
| Households with a computer | 92.2% ±4.1 pts | 96.4% | – |
| Households with a broadband subscription | 84.6% ±5.5 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 Darby?
Owners occupy 49.9% of Darby's occupied homes and renters 50.1%. The median owner-occupied home is valued at $117,900 by its owner (±$32,225). The median renter pays $1,308 a month including utilities, and 55.5% of renters pay 35% or more of their income on rent.
| Measure | Darby | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $117,900 ±$32,225 | $332,200 | no clear change |
| Median gross rent | $1,308 ±$161 | $1,372 | no clear change |
| Renters paying 35% or more of income on rent | 55.5% ±11.5 pts | 45.9% | no clear change |
| Median monthly owner costs, with a mortgage | $1,482 ±$238 | $2,222 | – |
| Owner-occupied homes | 49.9% ±8.0 pts | 69.6% | no clear change |
| Renter-occupied homes | 50.1% ±8.0 pts | 30.4% | – |
| Housing units | 4,545 ±436 | 229,715 | no clear change |
| Homeowner vacancy rate | 1.5% ±1.7 pts | 0.6% | – |
| Rental vacancy rate | 8.3% ±4.4 pts | 4.8% | – |
| Single-family detached homes | 11.9% ±5.1 pts | 43.6% | – |
| Mobile homes | 0.0% ±0.7 pts | 0.3% | – |
| Built 2020 or later | 0.0% ±0.7 pts | 0.6% | – |
| Built 2010 to 2019 | 0.0% ±0.7 pts | 2.9% | – |
| Built 1939 or earlier | 29.5% ±5.9 pts | 22.1% | – |
| Households with no vehicle | 28.2% ±7.7 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 Darby building?
Builders took permits for 0 new housing units in Darby 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 Darby work and get to work?
52.0% of Darby's workers drive alone and 10.5% work from home. The average trip to work takes 36.6 minutes. The unemployment rate in 2020-2024 averaged 18.5%.
| Measure | Darby | Delaware County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.3% ±4.3 pts | 65.6% | – |
| Unemployment rate | 18.5% ±4.5 pts | 6.9% | +9.6 pts |
| Drove alone to work | 52.0% ±8.6 pts | 64.4% | – |
| Carpooled | 6.9% ±3.3 pts | 6.6% | – |
| Public transportation | 24.9% ±5.9 pts | 5.9% | – |
| Walked | 1.4% ±1.4 pts | 3.3% | – |
| Worked from home | 10.5% ±5.6 pts | 18.0% | – |
| Mean travel time to work | 36.6 min ±3.3 | 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 Darby?
3 census tracts lie mostly in Darby (2020 census blocks). Their median household incomes run from $37,264 (Tract 4025) to $41,924 (Tract 4026).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 4026Delaware County | 4,210 | $41,924 |
| Tract 4024Delaware County | 3,406 | $37,768 |
| Tract 4025Delaware County | 3,071 | $37,264 |
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 Pennsylvania?
By the Census Bureau's July 2025 estimates, Darby is the 3,068th-most populous of the 19,476 U.S. incorporated places that have one and the 63rd-most populous of 1,012 in Pennsylvania.
Darby ranks 2,108th 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 | 63rd | 1,012 |
| Growth 2020-2025 (PEP) | 892nd | 1,764 |
| Residents per square mile | 3rd | 2,159 |
| Median household income | 2,108th | 2,136 |
| Per capita income | 2,123rd | 2,157 |
| Median home value | 1,949th | 2,146 |
| Median gross rent | 532nd | 1,963 |
| Poverty rate | 28th | 1,606 |
| Bachelor's degree or higher | 1,829th | 2,129 |
| Median age | 1,966th | 2,157 |
| Owner-occupied share | 2,013th | 2,149 |
| Work from home | 1,099th | 1,710 |
| Travel time to work | 99th | 2,156 |
Darby's figures with every place in Pennsylvania (CSV)
Every place in Pennsylvania, 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?
12 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.