ZIP Codes of Morrow County, OR

Population & People
Population & People
Total Population
12,230
Household Income
Household Income
Median Income
$74,241
Housing
Housing
Total Housing Units
4,888
Business & Economy
Business & Economy
Total Businesses
211
Employment
Employment
Employment Rate
57.87%
Education
Education
Bachelor's Degree+
9.92%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All]
Area Codes:458 / 541
Timezone:Pacific (GMT -08:00)
Local Time:11:54:48 PM
Population:12,230 [See All]
FIPS:41049
CBSA:Hermiston-Pendleton, OR
Land Area:1,919 sq mi
Water Area:17 sq mi
Coordinates:45.5995, -119.6556
Quick Link:
https://www.zip-codes.com/county/or-morrow.asp
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Oregon's most foreign-born county
18.2% of residents are foreign-born.
Notable income spread
Median income ranges $40,568 to $104,435 across ZIPs — a 2.6× gap.

Standout ZIPs in this County


Most Populous
Boardman · 5,610 people
45.9% of county total
Highest Income
Ione · $104,435 median
1.4× county average
Largest Land Area
Heppner · 1,076.5 sq mi
Spans the most ground
Fastest Growth
Boardman · 34.2% (10-yr)
4,181 → 5,610 residents
Most Educated
Heppner · 13.2% bachelor's+
177 of 1,340 adults 25+

Things worth knowing about Morrow County


12,230 residents live across 5 ZIPs covering 1,919 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 11,076 to 12,230 from 2014 to 2024 — a +10.4% change. 3 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 97843 (Ione, $104,435 median) and poorest ZIP 97839 (Lexington, $40,568) are 9.3 miles apart — a 2.6× income gap across local geography.

Median home values vary 1.3× across this county — from $211,400 in 97839 (Lexington) to $275,700 in 97818 (Boardman).

Density varies 87× across the county — from 1 people/sq mi in 97839 (Lexington) to 76 in 97844 (Irrigon).

Educational attainment ranges from 7.4% bachelor's+ in 97818 (Boardman) to 17.3% in 97843 (Ione) — the breadth of educational profiles across the area.

Within Oregon, this is the #29 most populous of 38 counties and ranks #19 for median household income with the #7 fastest decade growth .

Weighted by population, the typical household earns about $72,979 across the county — reflecting what a typical resident sees, not a simple ZIP average.

9.9% of adults age 25+ hold a bachelor's degree or higher (773 of 7,790 reporting).

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

Stories about Morrow 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
1,919
square miles
Avg density
6.4
people per sq mi
Population
12,230
across 5 ZIPs
Heppner
1,076.5 sq mi
1,998 residents
Ione
430.3 sq mi
805 residents
Boardman
230.8 sq mi
5,610 residents

All ZIP Codes in Morrow County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
97818BoardmanStandard5,610$61,523230.834.2%
97844IrrigonStandard3,701$76,09048.7-0.4%
97836HeppnerStandard1,998$88,5911,076.51.3%
97843IoneStandard805$104,435430.322.0%
97839LexingtonStandard116$40,568132.6-78.8%

Adjacent & Nearby Counties