| ZIP Codes: | 48 ZIP Codes (37 Standard, 8 PO Box, 3 Unique) [See All] |
| Area Codes: | 215 / 267 / 445 / 484 / 610 / 835 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:31 PM |
| Population: | 606,361 [See All] |
| FIPS: | 42045 |
| CBSA: | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD |
| Land Area: | 216 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 39.9106, -75.3804 |
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606,361 residents live across 48 ZIPs covering 216 sq mi, served by 43 distinct USPS-recognized cities.
Population moved from 586,261 to 605,730 from 2014 to 2024 — a +3.3% change. 26 ZIPs gained residents, 12 lost.
The county's wealthiest ZIP 19085 (Villanova, $250,001 median) and poorest ZIP 19013 (Chester, $41,261) are 13.6 miles apart — a 6.1× income gap across local geography.
Median home values vary 12.6× across this county — from $83,700 in 19013 (Chester) to $1,056,000 in 19085 (Villanova).
Density varies 31× across the county — from 493 people/sq mi in 19317 (Chadds Ford) to 15,444 in 19082 (Upper Darby).
Educational attainment ranges from 13.6% bachelor's+ in 19022 (Crum Lynne) to 86.4% in 19085 (Villanova) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #5 most populous of 67 counties and ranks #4 for median household income .
On the national stage, Delaware County is .
Hosts 3 single-entity Unique ZIPs: 19339State Farm Insurance ; 19340State Farm Insurance ; and 19091Franklin Mt Ctr .
Weighted by population, the typical household earns about $105,439 across the county — reflecting what a typical resident sees, not a simple ZIP average.
43.6% of adults age 25+ hold a bachelor's degree or higher (180,210 of 413,452 reporting).
37 Standard delivery, 8 PO Box only, 3 single-entity Unique ZIPs serve this county.
9 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
3 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 6.1× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 19082 | Upper Darby | Standard | 41,541 | $57,108 | 2.7 | 3.2% |
| 19063 | Media | Standard | 38,172 | $127,368 | 24.3 | 6.4% |
| 19083 | Havertown | Standard | 37,590 | $124,523 | 5.6 | 3.6% |
| 19013 | Chester | Standard | 35,064 | $41,261 | 7.0 | -1.5% |
| 19087 | Wayne | Standard | 33,528 | $171,179 | 15.8 | 2.7% |
| 19026 | Drexel Hill | Standard | 32,725 | $89,234 | 3.6 | 4.9% |
| 19050 | Lansdowne | Standard | 29,373 | $60,859 | 3.7 | 5.1% |
| 19064 | Springfield | Standard | 25,277 | $136,893 | 8.2 | 2.0% |
| 19018 | Clifton Heights | Standard | 23,505 | $73,522 | 2.7 | -0.7% |
| 19023 | Darby | Standard | 22,247 | $46,463 | 2.0 | -1.6% |
| 19073 | Newtown Square | Standard | 21,915 | $134,839 | 21.2 | 18.4% |
| 19010 | Bryn Mawr | Standard | 21,827 | $144,471 | 8.5 | 5.7% |
| 19014 | Aston | Standard | 21,427 | $96,781 | 9.3 | 0.0% |
| 19342 | Glen Mills | Standard | 20,770 | $132,688 | 19.9 | 10.9% |
| 19008 | Broomall | Standard | 20,697 | $119,698 | 6.5 | 0.9% |
| 19061 | Marcus Hook | Standard | 19,896 | $82,005 | 7.6 | 1.0% |
| 19015 | Brookhaven | Standard | 16,464 | $82,450 | 2.9 | 0.8% |
| 19036 | Glenolden | Standard | 13,668 | $79,144 | 1.5 | 6.3% |
| 19086 | Wallingford | Standard | 12,930 | $148,920 | 4.0 | 13.7% |
| 19078 | Ridley Park | Standard | 11,683 | $94,681 | 2.1 | 8.2% |
| 19060 | Garnet Valley | Standard | 11,524 | $185,043 | 7.8 | 3.0% |
| 19085 | Villanova | Standard | 11,230 | $250,001 | 6.5 | 28.6% |
| 19317 | Chadds Ford | Standard | 10,864 | $174,408 | 22.0 | 13.5% |
| 19081 | Swarthmore | Standard | 10,089 | $134,135 | 2.1 | 1.6% |
| 19079 | Sharon Hill | Standard | 8,745 | $67,454 | 1.6 | -5.6% |
| 19033 | Folsom | Standard | 8,261 | $114,400 | 1.2 | -0.5% |
| 19032 | Folcroft | Standard | 6,772 | $61,306 | 1.3 | 2.4% |
| 19076 | Prospect Park | Standard | 6,441 | $64,231 | 1.0 | -2.3% |
| 19070 | Morton | Standard | 6,359 | $95,795 | 1.1 | -7.6% |
| 19074 | Norwood | Standard | 5,934 | $96,134 | 0.8 | 0.6% |
| 19022 | Crum Lynne | Standard | 4,482 | $48,969 | 2.0 | 12.7% |
| 19029 | Essington | Standard | 3,980 | $53,451 | 2.7 | -0.6% |
| 19094 | Woodlyn | Standard | 3,929 | $64,150 | 0.8 | -18.9% |
| 19043 | Holmes | Standard | 3,317 | $95,377 | 0.4 | 36.2% |
| 19373 | Thornton | Standard | 2,357 | $192,708 | 3.3 | -51.5% |
| 19319 | Cheyney | Standard | 792 | — | 0.7 | -18.9% |
| 19052 | Lenni | PO Box | 631 | $88,831 | 0.2 | — |
| 19017 | Chester Heights | PO Box | 355 | $166,917 | 0.0 | 8.6% |
| 19113 | Philadelphia | Standard | 0 | — | 1.5 | -100.0% |
| 19339 | Concordville | Unique | — | — | 0.0 | — |
| 19016 | Chester | PO Box | — | — | 0.0 | — |
| 19331 | Concordville | PO Box | — | — | 0.0 | — |
| 19340 | Concordville | Unique | — | — | 0.0 | — |
| 19037 | Glen Riddle Lima | PO Box | — | — | 0.0 | — |
| 19065 | Media | PO Box | — | — | 0.0 | — |
| 19039 | Gradyville | PO Box | — | — | 0.0 | — |
| 19091 | Media | Unique | — | — | 0.0 | — |
| 19028 | Edgemont | PO Box | — | — | 0.0 | — |