County ProfileMN
Polk County
Population: 31,192 · 16 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
31,192
People
Median age
39.8
Housing
Total households
12,360
Income
Median household income
$73,107
Housing
Total housing units
14,697
Employment
Employment rate
63.7%
Education
Bachelor’s degree or higher
28%
Healthcare
Insured population
94.2%
County details
Local time 01:48:48(CT)| Name | Polk |
|---|---|
| Total ZIP codes | 16total |
| ZIP codes (by type) | 16 Standard |
| Area code | 218 |
| Timezone | Central Time (CT) |
| Coordinates | 47.7742536, -96.4000265 |
| Land area | 1,971 sq miles(5,104.9 km²) |
Map of Polk county, Minnesota with ZIP codes
Cities and Communities in Polk County
Compare the largest cities in Polk 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 |
|---|---|---|---|
| East Grand Forks | 9,176 | $77,549 | 1ZIPs |
| Crookston | 7,482 | $57,315 | 1ZIPs |
| Fosston | 1,434 | $52,500 | 1ZIPs |
| Fertile | 804 | $67,125 | 1ZIPs |
| Mcintosh | 606 | $56,944 | 1ZIPs |
| Fisher | 422 | $93,542 | 1ZIPs |
| Erskine | 403 | $44,844 | 1ZIPs |
| Euclid | 314 | — | 1ZIPs |
| Climax | 243 | $50,500 | 1ZIPs |
| Winger | 174 | $48,229 | 1ZIPs |
| Mentor | 104 | $41,667 | 1ZIPs |
| Lengby | 92 | $50,833 | 1ZIPs |
| Beltrami | 88 | $78,125 | 1ZIPs |
| Nielsville | 78 | $32,500 | 1ZIPs |
| Gully | 59 | $40,735 | 1ZIPs |
| Trail | 40 | $60,000 | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Polk County
Review the most populated postal areas across Polk County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 56721 | East Grand Forks | $82,525 | 10,602 |
| 56716 | Crookston | $59,744 | 8,965 |
| 56542 | Fosston | $59,706 | 2,718 |
| 56540 | Fertile | $83,646 | 1,919 |
| 56535 | Erskine | $65,536 | 1,240 |
| 56556 | Mcintosh | $61,786 | 1,176 |
| 56723 | Fisher | $106,250 | 980 |
| 56736 | Mentor | $95,000 | 859 |
| 56651 | Lengby | $80,750 | 638 |
| 56592 | Winger | $59,167 | 504 |
| 56523 | Climax | $56,685 | 475 |
| 56684 | Trail | $73,750 | 384 |
| 56646 | Gully | $48,750 | 320 |
| 56722 | Euclid | $94,375 | 314 |
| 56517 | Beltrami | $92,500 | 273 |
| 56568 | Nielsville | $40,000 | 118 |
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