Dubuque County, IA ZIP codes
Dubuque County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
ZIP codes partly in Dubuque County
This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Dubuque County.
- 52033 Cascade · mostly in Jones County
Map of Dubuque County ZIP codes
The ZIP codes of Dubuque County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Dubuque County in numbers
About 99,030 people live in Dubuque County, in 40,989 households, the 9th most populous of Iowa's 99 counties. The median household income is $77,630 a year, 3% above the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $237,300 (14% above the Iowa median), and median gross rent is $959 a month. The median age is 39.1; 33.4% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 17 minutes.
| Population | 99,030 |
|---|---|
| Households | 40,989 |
| Median age | 39.1 |
| Median household income | $77,630 |
| Median home value | $237,300 |
| Median gross rent | $959 |
| Bachelor's degree or higher | 33.4% |
| Mean commute | 16.7 min |
| Population density | 163 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Dubuque County
| Town | ZIP codes | Population |
|---|---|---|
| Dubuque | 5 | 59,174 |
| Peosta | 1 | 2,040 |
| Epworth | 1 | 1,894 |
| Farley | 1 | 1,889 |
| Durango | 1 | 1,079 |
| Worthington | 1 | 431 |
| New Vienna | 1 | 372 |
| Holy Cross | 1 | 280 |
| Luxemburg | 1 | 229 |
| Sherrill | 1 | 162 |
| Bernard | 1 | 112 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Dubuque County.
Not sure you are in Dubuque County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Dubuque County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
52001 | Dubuque , IA | Standard | 43,101 | $61,643 | $178,000 |
52002 | Dubuque , IA | Standard | 17,005 | $91,036 | $298,900 |
52003 | Dubuque , IA | Standard | 13,796 | $98,908 | $286,100 |
52004 | Dubuque , IA | No street area | — | — | — |
52032 | Bernard , IA | Standard | 1,305 | $88,500 | $269,000 |
52039 | Durango , IA | Standard | 1,079 | $79,345 | $330,700 |
52045 | Epworth , IA | Standard | 2,777 | $91,667 | $263,500 |
52046 | Farley , IA | Standard | 3,129 | $96,151 | $273,600 |
52053 | Holy Cross , IA | Standard | 1,148 | $83,000 | $251,900 |
52056 | Luxemburg , IA | Standard | 229 | $83,750 | $182,800 |
52065 | New Vienna , IA | Standard | 671 | $99,250 | $218,600 |
52068 | Peosta , IA | Standard | 5,280 | $125,901 | $361,700 |
52073 | Sherrill , IA | Standard | 1,381 | $95,526 | $297,400 |
52078 | Worthington , IA | Standard | 870 | $97,778 | $237,500 |
52099 | Dubuque , IA | No street area | — | — | — |
Cite this page
zipcodes.pro. “Dubuque County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ia/county/dubuque
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