County · Pennsylvania
Delaware County, Pennsylvania
Delaware County, Pennsylvania. Delaware County had 580,937 residents in 2025 by the Census Bureau's estimate, up 0.7% since 2020, in line with Pennsylvania (+0.4%). It holds 67 places (28 cities, villages and boroughs, 21 towns and townships and 18 census-designated) and 152 census tracts. GEOID 42045.
Delaware County is one of the 11 counties of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
580,937
Census Bureau estimate (no margin published)
2020 Census count: 576,830 · ACS 2020-2024: 579,222
Median household income
$89,546
±$1,375 (90% margin)
Pennsylvania: $77,971
Median home value
$332,200
±$4,050 (90% margin)
Pennsylvania: $254,500
Median gross rent
$1,372
±$22 (90% margin)
Pennsylvania: $1,209
How many people live in Delaware County, and is it growing?
The 2020 Census counted 576,830 residents in Delaware County. The Census Bureau estimates 580,937 for July 1, 2025, up 0.7% since 2020, in line with Pennsylvania (+0.4%). The 2020-2024 American Community Survey puts the population at 579,222 over 184 square miles of land.
| Measure | Delaware County | Pennsylvania | Change since 2015-2019 |
|---|---|---|---|
| Total population | 579,222 | 13,018,639 | +14,668 |
| Households | 216,946±987 | 5,274,853 | +9,689 |
| Average household size | 2.56±0.01 | 2.39 | −0.06 |
| Housing units | 229,715±174 | 5,806,452 | +5,298 |
Delaware County's population since 2000
From 550,864 in 2000 to 580,937 in 2025: up 5.5%. The 2000, 2010 and 2020 figures are census counts. 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); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Delaware County?
Delaware County holds 67 places: 28 cities, villages and boroughs (incorporated places), 21 towns and townships (county subdivisions with their own government) and 18 census-designated places. The largest is Upper Darby Township with 85,458 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Upper Darby Township | 85,681 | $71,481 |
|---|---|---|
| Haverford Township | 50,431 | $131,674 |
| Radnor Township | 33,228 | $164,359 |
| Chester | 32,605 | $41,342 |
| Ridley Township | 31,053 | $92,835 |
| Drexel Hill | 29,181 | $88,168 |
| Springfield Township, Delaware County | 25,070 | $138,205 |
| Marple Township | 24,214 | $123,844 |
| Concord Township, Delaware County | 18,295 | $132,303 |
| Upper Chichester Township | 16,898 | $92,371 |
| Aston Township | 16,791 | $98,758 |
| Middletown Township, Delaware County | 16,373 | $129,300 |
| Newtown Township, Delaware County | 15,002 | $121,350 |
| Nether Providence Township | 14,525 | $150,950 |
| Yeadon | 12,054 | $49,759 |
| Broomall | 11,718 | $105,625 |
| Lansdowne | 11,107 | $73,232 |
| Upper Providence Township, Delaware County | 10,852 | $150,563 |
| Darby | 10,715 | $39,863 |
| Woodlyn | 9,685 | $79,696 |
| Bethel Township, Delaware County | 9,574 | $177,137 |
| Darby Township | 9,219 | $81,458 |
| Collingdale | 8,908 | $51,886 |
| Brookhaven | 8,300 | $91,042 |
| Folsom | 8,287 | $113,064 |
| Village Green-Green Ridge | 8,000 | $96,711 |
| Glenolden | 7,223 | $72,786 |
| Ridley Park | 7,186 | $93,594 |
| Wayne | 7,160 | $150,539 |
| Thornbury Township, Delaware County | 6,904 | $191,543 |
| Clifton Heights | 6,863 | $70,931 |
| Folcroft | 6,792 | $61,306 |
| VillanovaGEOID 4280248 | 8,213 | $250,000 or more |
| Swarthmore | 6,543 | $152,361 |
| Prospect Park, Delaware County | 6,427 | $63,077 |
| Sharon Hill | 6,014 | $75,130 |
| Norwood | 5,943 | $96,134 |
| Media | 5,901 | $89,092 |
| Ardmore | 13,566 | $119,111 |
| Boothwyn | 4,968 | $96,147 |
| Edgmont Township | 4,283 | $136,964 |
| Aldan | 4,244 | $74,514 |
| Chester Township | 4,080 | $58,125 |
| Tinicum Township, Delaware County | 3,983 | $53,451 |
| Chadds Ford Township | 3,972 | $168,491 |
| Linwood | 3,949 | $80,484 |
| St. Davids | 3,604 | $163,173 |
| Lower Chichester Township | 3,425 | $82,589 |
| Upland | 3,068 | $61,553 |
| Chester Heights | 2,897 | $104,009 |
| Morton | 2,778 | $61,563 |
| Lima | 2,745 | $76,932 |
| East Lansdowne | 2,714 | $69,000 |
| Colwyn | 2,474 | $46,935 |
| Eddystone | 2,459 | $51,953 |
| Marcus Hook | 2,454 | $53,157 |
| Parkside | 2,321 | $93,929 |
| Rosemont | 3,507 | $88,322 |
| Trainer | 1,976 | $81,250 |
| Bryn Mawr | 5,879 | $92,961 |
| Haverford CollegeGEOID 4233154 | 1,497 | $182,500 |
| Millbourne | 1,212 | $54,219 |
| Rose Valley | 1,017 | $246,875 |
| Rutledge | 782 | $135,313 |
| Cheyney UniversityGEOID 4213418 | 565 | not published |
| Chadds FordGEOID 4212440 | 1,476 | $184,286 |
| DilworthtownGEOID 4219232 | 1,150 | $176,667 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Delaware County?
The median resident of Delaware County is 39.1 years old; 22.0% are under 18 and 17.4% are 65 or older. The largest group is non-Hispanic white residents at 62.4%, then non-Hispanic Black residents at 21.9%. 11.2% of residents were born outside the United States.
| Measure | Delaware County | Pennsylvania | Change since 2015-2019 |
|---|---|---|---|
| Median age | 39.1±0.2 | 40.9 | no clear change |
| Under 18 years | 22.0% | 20.4% | – |
| 65 years and over | 17.4% | 19.5% | – |
| Hispanic or Latino (any race) | 5.0% | 8.7% | +1.2 pts |
| White alone, not Hispanic | 62.4%±0.2 pts | 73.0% | −4.4 pts |
| Black or African American alone, not Hispanic | 21.9%±0.3 pts | 10.3% | +0.8 pts |
| Asian alone, not Hispanic | 6.3%±0.1 pts | 3.8% | +0.6 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.8%±0.3 pts | 3.6% | – |
| Some other race alone, not Hispanic | 0.5%±0.2 pts | 0.5% | – |
| Born outside the United States | 11.2%±0.4 pts | 7.7% | +0.8 pts |
| Speak a language other than English at home (age 5+) | 13.5%±0.4 pts | 12.4% | – |
| Civilian veterans (age 18+) | 4.9%±0.3 pts | 6.1% | – |
| With a disability | 12.5%±0.3 pts | 14.4% | – |
| No health insurance coverage | 4.6%±0.4 pts | 5.6% | no clear change |
| High school graduate or higher (age 25+) | 93.9%±0.4 pts | 92.1% | – |
| Bachelor's degree or higher (age 25+) | 41.9%±0.6 pts | 35.2% | +2.9 pts |
| Graduate or professional degree (age 25+) | 18.4%±0.5 pts | 14.3% | – |
| Moved from another state in the past year | 1.6%±0.1 pts | 1.9% | – |
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 Delaware County earn?
Half of Delaware County's 216,946 households earn less than $89,546 a year (±$1,375), against $77,971 in Pennsylvania. In 2015-2019 the median was $91,658 in 2024 dollars, so it fell by $2,112 after inflation. 10.2% of residents live below the poverty line.
| Measure | Delaware County | Pennsylvania | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $89,546±$1,375 | $77,971 | −$2,112 |
| Mean household income | $128,465±$2,165 | $107,538 | – |
| Per capita income | $49,673±$799 | $44,355 | no clear change |
| People below the poverty line | 10.2%±0.6 pts | 11.7% | no clear change |
| Children under 18 below the poverty line | 13.2%±1.3 pts | 15.6% | no clear change |
| Households receiving SNAP | 13.3%±0.6 pts | 14.4% | – |
| Households with a broadband subscription | 93.3%±0.5 pts | 89.7% | – |
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 Delaware County?
Owners occupy 69.6% of Delaware County's occupied homes and renters 30.4%. The median owner-occupied home is valued at $332,200 by its owner (±$4,050). The median renter pays $1,372 a month including utilities, and 45.9% of renters pay 35% or more of their income on rent.
| Measure | Delaware County | Pennsylvania | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $332,200±$4,050 | $254,500 | +$31,418 |
| Median gross rent | $1,372±$22 | $1,209 | +$45 |
| Renters paying 35% or more of income on rent | 45.9%±1.6 pts | 39.5% | +5.5 pts |
| Median monthly owner costs, with a mortgage | $2,222±$26 | $1,762 | – |
| Owner-occupied homes | 69.6%±0.8 pts | 69.3% | no clear change |
| Housing units | 229,715±174 | 5,806,452 | +5,298 |
| Homeowner vacancy rate | 0.6%±0.2 pts | 0.8% | – |
| Rental vacancy rate | 4.8%±0.8 pts | 4.9% | – |
| Single-family detached homes | 43.6%±0.6 pts | 56.6% | – |
| Mobile homes | 0.3%±0.1 pts | 3.5% | – |
| Built 2020 or later | 0.6%±0.1 pts | 1.0% | – |
| Built 1939 or earlier | 22.1%±0.7 pts | 25.0% | – |
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 Delaware County building?
Builders took permits for 217 new housing units across Delaware County in 2025 (215 single-family), 0.4 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Delaware County get to work?
64.4% of Delaware County's workers drive alone and 18.0% work from home. The average trip to work takes 28.1 minutes. The unemployment rate in 2020-2024 averaged 6.9%.
| Measure | Delaware County | Pennsylvania | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.6%±0.5 pts | 62.7% | – |
| Unemployment rate | 6.9%±0.4 pts | 5.3% | +1.3 pts |
| Drove alone to work | 64.4%±0.8 pts | 68.2% | – |
| Carpooled | 6.6%±0.5 pts | 7.5% | – |
| Public transportation | 5.9%±0.5 pts | 3.6% | – |
| Walked | 3.3%±0.3 pts | 3.3% | – |
| Worked from home | 18.0%±0.6 pts | 15.6% | +13.1 pts |
| Mean travel time to work | 28.1 min±0.4 | 26.3 min | −1.6 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 are Delaware County's census tracts?
Delaware County is divided into 152 census tracts. Among those with a reliable estimate, median household income runs from $27,788 (Tract 4107) to $250,000 or more (Tract 4097.01).
All 152 census tracts of Delaware County, with their figures
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Delaware County compare with Pennsylvania's other counties?
| Measure | Rank |
|---|---|
| Population | 5th of 67 |
| Growth 2020-2025 | 23rd of 67 |
| Residents per square mile | 2nd of 67 |
| Median household income | 5th of 67 |
| Median home value | 4th of 67 |
| Median gross rent | 9th of 67 |
| Poverty rate | 47th of 67 |
| Bachelor's degree or higher | 6th of 67 |
| Median age | 65th of 67 |
Source: PlainCities ranks 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 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 Delaware 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.