ZIP Codes of Lac Qui Parle County, MN

Population & People
Population & People
Total Population
377
Household Income
Household Income
Median Income
$75,417
Housing
Housing
Total Housing Units
209
Business & Economy
Business & Economy
Total Businesses
276
Employment
Employment
Employment Rate
45.16%
Education
Education
Bachelor's Degree+
13.90%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 1 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:605
Timezone:Central (GMT -06:00)
Local Time:2:12:37 PM
Population:377 [See All]
FIPS:46051
Land Area:639 sq mi
Water Area:12 sq mi
Coordinates:44.9867, -96.4065
Quick Link:
https://www.zip-codes.com/county/mn-lac-qui-parle.asp
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Notable population decline
Lost 24.1% of residents since 2014.
Among Minnesota's 5 oldest counties
Median age 54.2.

Standout ZIPs in this County


Most Populous
Madison · 2,446 people
40.0% of county total
Highest Income
Bellingham · $81,250 median
1.1× county average
Largest Land Area
Madison · 226.8 sq mi
Spans the most ground
Fastest Growth
Madison · -3.4% (10-yr)
2,532 → 2,446 residents
Most Educated
Dawson · 26.1% bachelor's+
425 of 1,631 adults 25+

Things worth knowing about Lac Qui Parle County


6,112 residents live across 5 ZIPs covering 639 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 6,518 to 6,112 from 2014 to 2024 — a -6.2% change. 0 ZIPs gained residents, 5 lost.

The county's wealthiest ZIP 56212 (Bellingham, $81,250 median) and poorest ZIP 56256 (Madison, $65,521) are 8.6 miles apart — a 1.2× income gap across local geography.

Median home values vary 2.3× across this county — from $73,800 in 56257 (Marietta) to $172,300 in 56232 (Dawson).

Density varies across the county — from 4 people/sq mi in 56257 (Marietta) to 16 in 56232 (Dawson).

Educational attainment ranges from 13.9% bachelor's+ in 56257 (Marietta) to 28.0% in 56218 (Boyd) — the breadth of educational profiles across the area.

Within Minnesota, this is the #93 most populous of 93 counties and ranks #48 for median household income .

Weighted by population, the typical household earns about $72,056 across the county — reflecting what a typical resident sees, not a simple ZIP average.

23.2% of adults age 25+ hold a bachelor's degree or higher (1,026 of 4,417 reporting).

5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Lac Qui Parle County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
639
square miles
Avg density
9.6
people per sq mi
Population
6,112
across 5 ZIPs
Madison
226.8 sq mi
2,446 residents
Dawson
149.0 sq mi
2,379 residents
Boyd
97.5 sq mi
435 residents

Population decline

Lac Qui Parle County lost 24.1% of residents between 2014 and 2024. ZIPs that shed the largest share:

Boyd
-18.4%
533 → 435 residents

All ZIP Codes in Lac Qui Parle County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
56256MadisonStandard2,446$65,521226.8-3.4%
56232DawsonStandard2,379$75,069149.0-3.5%
56212BellinghamStandard475$81,25079.6-3.1%
56218BoydStandard435$79,37597.5-18.4%
56257MariettaStandard377$75,41785.8-24.1%

Adjacent & Nearby Counties