Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/OR/COUNTY/UNION

Union County, OR ZIP codes

There are 7 ZIP codes in Union County, OR, in 7 towns, from 97824 to 97883. The largest are 97850 (La Grande), 97883 (Union) and 97827 (Elgin).

The county seat is La Grande.

ZIP codes
7
Towns
7
County seat
La Grande
County FIPS
41061
State
Oregon
Population
26,144
Median household income
$65,661
Land area
2,037 sq mi
Metro area
La Grande

Union County ZIP codes by town

La Grande (county seat)
97850

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Union County ZIP codes

97824978279784197850978679787697883

The ZIP codes of Union County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Union County in numbers

About 26,144 people live in Union County, in 10,900 households, the 24th most populous of Oregon's 36 counties. The median household income is $65,661 a year, 21% below the Oregon median of $83,011 (US: $80,734). The median owner-occupied home is valued at $294,600 (38% below the Oregon median), and median gross rent is $982 a month. The median age is 40.0; 26.1% of adults 25 and over hold a bachelor's degree or higher (36.8% across Oregon); the average commute takes 16 minutes.

Population26,144Union26,144
Households10,900Union10,900
Median age40.0Union40.0Oregon40.4US 38.9
Median household income$65,661Union$65,661Oregon$83,011US $80,734
Median home value$294,600Union$294,600Oregon$477,600US $332,700
Median gross rent$982Union$982Oregon$1,525US $1,413
Bachelor's degree or higher26.1%Union26.1%Oregon36.8%US 35.7%
Mean commute16.3 minUnion16.3 minOregon23.0 minUS 26.4 min
Population density13 / sq miUnion13 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Union County

Largest towns in Union County
TownZIP codesPopulation
La Grande 1 13,058
Union 1 2,290
Elgin 1 1,549
Cove 1 651
North Powder 1 563
Imbler 1 189
Summerville 1 106

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Union County.

Not sure you are in Union County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Union County, with figures

ZIP codes in Union County
ZIP City Type Population Median income Median home
97824 Cove , OR Standard 2,117 $80,263 $413,700
97827 Elgin , OR Standard 2,384 $60,766 $262,500
97841 Imbler , OR Standard 370 $73,750 $267,900
97850 La Grande , OR Standard 16,903 $63,421 $298,100
97867 North Powder , OR Standard 947 $83,846 $152,000
97876 Summerville , OR Standard 995 $119,531 $435,600
97883 Union , OR Standard 2,489 $65,172 $239,100

Cite this page

zipcodes.pro. “Union County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/or/county/union

Underlying data is public domain or openly licensed — sources, vintages and licences.