Sussex
Source:
Delaware
Sussex is a mid-size county in Delaware with 22 ZIP codes, 206,355 people, and upper-quartile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Sussex, DE sits among US counties with an upper-quartile household income, on a mid-size county population base, across a multi-ZIP patchwork.
- Top 16%
- household income vs 3,210 US counties
- 206,355
- combined ZIP population
- 22
- USPS ZIP codes covered
- $85,481
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Sussex lands in the national county income distribution as upper-quartile household income on mid-size county footing (FIPS 10005, 22 ZIPs, combined population 206,355). Sort the ZIP table by population before treating the county mean as uniform.
High-income counties with wide ZIP mosaics hide sharp internal gradients. The densest ZIP here is 19966 (Millsboro) with 24,601 residents - open it beside a thin rural code from the table before treating the county mean as uniform. HUD Fair Market Rents and FBI county tables attach to FIPS 10005, so scorecards stay county-keyed while household income stays ZIP-keyed.
Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.
22
Total ZIPs
206,355
Total Population
ZIP Codes in Sussex
Side-by-side: Compare 19966 vs 19973 →
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 19966 | Millsboro | 24,601 | 110 |
| 19973 | Seaford | 23,838 | 117 |
| 19958 | Lewes | 19,650 | 155 |
| 19963 | Milford | 19,206 | 70 |
| 19947 | Georgetown | 18,799 | 61 |
| 19956 | Laurel | 15,500 | 59 |
| 19971 | Rehoboth Beach | 12,385 | 289 |
| 19968 | Milton | 9,549 | 59 |
| 19933 | Bridgeville | 8,535 | 52 |
| 19975 | Selbyville | 8,253 | 117 |
| 19950 | Greenwood | 6,951 | 36 |
| 19945 | Frankford | 6,862 | 42 |
| 19960 | Lincoln | 6,295 | 82 |
| 19970 | Ocean View | 6,170 | 246 |
| 19939 | Dagsboro | 5,979 | 89 |
| 19940 | Delmar | 5,574 | 52 |
| 19930 | Bethany Beach | 2,768 | 189 |
| 19941 | Ellendale | 2,522 | 29 |
| 19951 | Harbeson | 1,733 | 66 |
| 19944 | Fenwick Island | 620 | 189 |
| 19967 | Millville | 354 | 94 |
| 19931 | Bethel | 211 | 89 |
Frequently Asked Questions
What is the population of Sussex?
Sussex has a total population of 206,355 across 22 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Sussex?
Sussex includes 22 ZIP codes: 19966, 19973, 19958, 19963, 19947, 19956, 19971, 19968, 19933, 19975, and more.