County ZIP codes · Minnesota · FIPS 27031

Cook County, MN ZIP Codes

Cook County, Minnesota has 6 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential.

ACS2020-24
Census2020

Where are the ZIP codes of Cook County?

The residential ZIP codes of Cook County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024).<$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 6 residential ZIP codes in Cook County

Residential ZIP codes mainly in Cook County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
55604	Grand Marais	3,719	5	$73k	$353k	100%
55605	Grand Portage	572	8	$56k	$140k	100%
55612	Lutsen	535	3	$81k	$415k	100%
55615	Tofte	379	2	$61k	$276k	100%
55613	Schroeder	232	4	$59k	$406k	100%
55606	Hovland	198	1	$85k	$318k	100%

Download the 6 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which first three digits do Cook County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Cook County starts with 556.

Three-digit prefixes of Cook County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Cook County's
Prefix	Sectional center	Here	All codes
556	Duluth, MN (SCF 556)	6	13

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.