ZIP Codes of Renville County, MN

Population & People
Population & People
Total Population
14,780
Household Income
Household Income
Median Income
$70,204
Housing
Housing
Total Housing Units
6,979
Business & Economy
Business & Economy
Total Businesses
467
Employment
Employment
Employment Rate
61.12%
Education
Education
Bachelor's Degree+
17.68%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 10 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:10 ZIP Codes (10 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:320 / 507 / 924
Timezone:Central (GMT -06:00)
Local Time:2:12:39 PM
Population:14,780 [See All]
FIPS:27129
Land Area:983 sq mi
Water Area:5 sq mi
Coordinates:44.6966, -94.9496
Quick Link:
https://www.zip-codes.com/county/mn-renville.asp
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Minnesota's #56 most populous county
14,780 residents across 10 ZIPs — #56 of 93 Minnesota counties.

Standout ZIPs in this County


Most Populous
Olivia · 2,905 people
19.7% of county total
Highest Income
Bird Island · $87,292 median
1.2× county average
Largest Land Area
Hector · 167.1 sq mi
Spans the most ground
Fastest Growth
Fairfax · 7.3% (10-yr)
1,554 → 1,667 residents
Most Educated
Olivia · 20.8% bachelor's+
428 of 2,055 adults 25+

Things worth knowing about Renville County


14,780 residents live across 10 ZIPs covering 983 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 15,568 to 14,780 from 2014 to 2024 — a -5.1% change. 3 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 55310 (Bird Island, $87,292 median) and poorest ZIP 55333 (Franklin, $54,688) are 13.0 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.8× across this county — from $104,300 in 56270 (Morton) to $184,500 in 56277 (Olivia).

Density varies across the county — from 10 people/sq mi in 56285 (Sacred Heart) to 25 in 56277 (Olivia).

Educational attainment ranges from 10.8% bachelor's+ in 55333 (Franklin) to 21.6% in 55310 (Bird Island) — the breadth of educational profiles across the area.

Within Minnesota, this is the #56 most populous of 93 counties and ranks #65 for median household income .

Weighted by population, the typical household earns about $70,554 across the county — reflecting what a typical resident sees, not a simple ZIP average.

17.7% of adults age 25+ hold a bachelor's degree or higher (1,823 of 10,310 reporting).

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

Stories about Renville 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
983
square miles
Avg density
15.0
people per sq mi
Population
14,780
across 10 ZIPs
Hector
167.1 sq mi
1,973 residents
Renville
137.1 sq mi
2,168 residents
Fairfax
119.9 sq mi
1,667 residents

Population decline

Renville County lost 5.1% of residents between 2014 and 2024. ZIPs that shed the largest share:

Franklin
-27.3%
960 → 698 residents
Buffalo Lake
-16.1%
1,414 → 1,187 residents
Sacred Heart
-14.1%
1,144 → 983 residents

All ZIP Codes in Renville County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
56277OliviaStandard2,905$70,326115.3-6.6%
56284RenvilleStandard2,168$72,500137.1-4.3%
55342HectorStandard1,973$64,861167.11.2%
55332FairfaxStandard1,667$62,361119.97.3%
55310Bird IslandStandard1,344$87,29293.9-4.5%
55314Buffalo LakeStandard1,187$79,50077.0-16.1%
56270MortonStandard1,076$61,94445.312.2%
56285Sacred HeartStandard983$83,98497.7-14.1%
56230DanubeStandard779$64,58365.6-3.2%
55333FranklinStandard698$54,68864.0-27.3%

Adjacent & Nearby Counties