State profile · DE
Delaware ZIP Codes
Demographics, income, and housing across every ZIP code in Delaware, benchmarked against all 50 states, DC and Puerto Rico.
- 67
- ZIP codes
- 897,925
- Population
- $89,586
- Avg ZIP income
- 3
- Counties
The verdict
Delaware holds the 51st-most ZIP codes in the country, with an average ZIP household income 24% above the national ZIP median — 12th of 52 states & territories.
- #51
- of 52 by ZIP count
- #12
- of 52 by avg income
- 897,925
- people across all ZIPs
- 3
- counties covered
Ranks compare this state against all reporting states using ZIP-level Census ACS 5-Year aggregates.
Delaware (DE) contains 67 ZIP codes spread across 3 counties and 53 distinct cities. Together those ZIP areas cover a total population of 897,925 based on Census ACS 5-Year Estimates. ZIP-level granularity matters here: Delaware stretches across very different economic zones, and a single state-wide average hides the 10x spread you will see between its highest-income and lowest-income ZIP codes in the table below.
The economic baseline across Delaware ZIPs shows an average median household income of $89,586 and an average home value of $377,721, with a state-wide average median age of 44.9. These averages are computed over every ZIP in DE with reported data, not weighted by population, so small rural ZIPs count the same as metropolitan ones. Use them as a reference line, then drill into the ZIP tables to see where affluent suburbs, rural counties, and urban cores deviate from the state mean.
The largest urban concentrations in Delaware by population are Wilmington, Newark, Dover, New Castle, Bear, and each city aggregates multiple ZIP codes worth of Census data on its own city page. Every record in this view comes from publicly available federal datasets, primarily the U.S. Census Bureau American Community Survey and USPS ZIP Code Tabulation Area files, with no proprietary scoring, estimation, or editorial adjustment. Click any county to drill down to its ZIP-level detail, or jump directly to a ZIP code to see household income, housing cost, demographic breakdown, nearby ZIPs, and FHFA home-price history for that specific five-digit area.
Largest cities in Delaware
Top 10 cities by population in Delaware
Total resident population aggregated from every ZIP code the Census assigns to each city.
- Wilmington
Wilmington, DE
215,619 residents
- Newark
Newark, DE
138,967 residents
- Dover 69,187
Dover, DE
69,187 residents
- New Castle 59,250
New Castle, DE
59,250 residents
- Bear 39,194
Bear, DE
39,194 residents
- Middletown 35,107
Middletown, DE
35,107 residents
- Millsboro 24,601
Millsboro, DE
24,601 residents
- Seaford 23,838
Seaford, DE
23,838 residents
- Smyrna 22,984
Smyrna, DE
22,984 residents
- Lewes 19,650
Lewes, DE
19,650 residents
What this shows Population concentrates heavily in the state's largest metros, while most of its 53 cities are far smaller, a pattern the ZIP-level tables below make concrete.
Counties in Delaware
Which cities have the most ZIPs in Delaware?
Side-by-side: Compare 19720 vs 19702 →
ZIP Codes in Delaware
More DE ZIP codes
Official Data Resources
Frequently Asked Questions
How many ZIP codes are in Delaware?▼
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Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023); USPS ZIP Code Tabulation Areas via the HUD USPS Crosswalk.
Read our methodology to see how this data is sourced, computed, and verified.