| ZIP Codes: | 16 ZIP Codes (14 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 302 / 410 / 443 / 667 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:46 PM |
| Population: | 26,834 [See All] |
| FIPS: | 24019 |
| CBSA: | Seaford, DE |
| Land Area: | 628 sq mi |
| Water Area: | 105 sq mi |
| Coordinates: | 38.6319, -75.5891 |
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31,256 residents live across 16 ZIPs covering 628 sq mi, served by 16 distinct USPS-recognized cities.
Population moved from 31,824 to 31,256 from 2014 to 2024 — a -1.8% change. 6 ZIPs gained residents, 10 lost.
The county's wealthiest ZIP 21669 (Taylors Island, $116,500 median) and poorest ZIP 21835 (Linkwood, $47,083) are 19.2 miles apart — a 2.5× income gap across local geography.
Median home values vary 12.4× across this county — from $51,100 in 21835 (Linkwood) to $631,900 in 21626 (Crapo).
Density varies 388× across the county — from 5 people/sq mi in 21622 (Church Creek) to 2,050 in 21664 (Secretary).
Educational attainment ranges from 9.7% bachelor's+ in 21835 (Linkwood) to 31.5% in 21626 (Crapo) — the breadth of educational profiles across the area.
Within Maryland, this is the #4 most populous of 4 counties and ranks #4 for median household income with the #2 fastest decade growth .
Weighted by population, the typical household earns about $60,836 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.8% of adults age 25+ hold a bachelor's degree or higher (4,431 of 22,373 reporting).
14 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 21613 | Cambridge | Standard | 17,926 | $53,890 | 200.4 | 3.0% |
| 21643 | Hurlock | Standard | 5,392 | $67,219 | 46.7 | 5.1% |
| 21631 | East New Market | Standard | 2,429 | $73,864 | 27.1 | -7.9% |
| 21659 | Rhodesdale | Standard | 1,601 | $73,750 | 49.7 | 5.0% |
| 21869 | Vienna | Standard | 827 | $62,045 | 106.1 | 5.4% |
| 21664 | Secretary | PO Box | 635 | $82,721 | 0.3 | -25.7% |
| 21634 | Fishing Creek | Standard | 465 | $83,250 | 8.8 | 32.1% |
| 21677 | Woolford | Standard | 436 | — | 18.7 | -30.1% |
| 21622 | Church Creek | Standard | 420 | $68,750 | 79.5 | -48.3% |
| 21835 | Linkwood | Standard | 312 | $47,083 | 7.8 | -59.2% |
| 21626 | Crapo | Standard | 256 | — | 29.2 | 109.8% |
| 21648 | Madison | Standard | 172 | — | 16.9 | -47.9% |
| 21672 | Toddville | Standard | 161 | $83,269 | 9.9 | -1.8% |
| 21669 | Taylors Island | PO Box | 160 | $116,500 | 13.9 | -5.3% |
| 21675 | Wingate | Standard | 38 | — | 4.0 | -47.2% |
| 21627 | Crocheron | Standard | 26 | $96,250 | 9.0 | -64.9% |