How to use this list
Counties are sorted alphabetically. Use ZIP count and population to spot larger counties, then open a county for its ZIP roster and income/housing averages.
Delaware counties
3 counties · 68 ZIP codes · population 1,006,247 . Select a county to open its ZIP table and local summary.
Related pages
Also see the Delaware overview, cities, rankings, and congressional districts.
| County | ZIP codes | Population | Avg. income |
|---|---|---|---|
| Kent County | 17 | 179,028 | $76,136 |
| New Castle County | 29 | 568,543 | $101,295 |
| Sussex County | 22 | 258,676 | $80,531 |
Frequently asked questions
- How many counties are listed for Delaware?
- US5 currently lists 3 counties with published ZIP coverage in Delaware. Counts can change as geography publishes update.
- What happens when I open a county?
- Each county page shows ZIP totals, income and housing averages, and a ZIP table. From there you can open any ZIP for a full demographics dashboard.