County ProfileIA
Dubuque County
Population: 99,266 · 18 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
99,266
People
Median age
39.1
Housing
Total households
40,989
Income
Median household income
$77,630
Housing
Total housing units
43,288
Employment
Employment rate
64.3%
Education
Bachelor’s degree or higher
33.4%
Healthcare
Insured population
96.5%
County details
Local time 00:50:49(CT)| Name | Dubuque |
|---|---|
| Total ZIP codes | 18total |
| ZIP codes (by type) | 15 Standard2 PO Box1 Unique |
| Area code | 563 |
| Timezone | Central Time (CT) |
| Coordinates | 42.4634808, -90.8787708 |
| Land area | 608.3 sq miles(1,575.5 km²) |
Map of Dubuque county, Iowa with ZIP codes
Cities and Communities in Dubuque County
Compare the largest cities in Dubuque County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Dubuque | 59,667 | $65,845 | 5ZIPs |
| Dyersville | 4,477 | $83,559 | 1ZIPs |
| Cascade | 2,386 | $69,688 | 1ZIPs |
| Epworth | 2,023 | $84,271 | 1ZIPs |
| Peosta | 1,908 | $120,833 | 1ZIPs |
| Farley | 1,766 | $97,143 | 1ZIPs |
| New Vienna | 382 | $93,250 | 1ZIPs |
| Worthington | 382 | $97,500 | 1ZIPs |
| Holy Cross | 356 | $64,375 | 1ZIPs |
| Luxemburg | 245 | $83,750 | 1ZIPs |
| Sherrill | 189 | $84,167 | 1ZIPs |
| Bernard | 114 | $71,250 | 1ZIPs |
| Zwingle | 84 | $78,750 | 1ZIPs |
| Durango | 20 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Dubuque County
Review the most populated postal areas across Dubuque County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 52001 | Dubuque | $61,643 | 43,572 |
| 52002 | Dubuque | $91,036 | 17,177 |
| 52003 | Dubuque | $98,908 | 14,060 |
| 52040 | Dyersville | $84,761 | 5,911 |
| 52068 | Peosta | $125,901 | 4,835 |
| 52033 | Cascade | $69,023 | 3,478 |
| 52045 | Epworth | $91,667 | 2,739 |
| 52046 | Farley | $96,151 | 2,391 |
| 52073 | Sherrill | $95,526 | 1,590 |
| 52032 | Bernard | $88,500 | 1,424 |
| 52039 | Durango | $79,345 | 1,195 |
| 52053 | Holy Cross | $83,000 | 1,120 |
| 52078 | Worthington | $97,778 | 847 |
| 52065 | New Vienna | $99,250 | 802 |
| 52079 | Zwingle | $101,120 | 753 |
| 52056 | Luxemburg | $83,750 | 245 |
| 52004 | Dubuque | — | — |
| 52099 | Dubuque | — | — |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS