What is the largest city in Umatilla County, OR?

Hermiston is the largest city or town in Umatilla County, with about 19,546 residents.

How many ZIP codes are in Umatilla County?

Umatilla County includes 13 ZIP Code Tabulation Areas, including 97801, 97810, 97813, 97826, 97835.

What is the population of Umatilla County, OR?

About 79,940 people live in Umatilla County, based on American Community Survey 5-year estimates.

What counties border Umatilla County?

Umatilla County borders Benton County, WA, Walla Walla County, WA, Union County, Morrow County, Wallowa County, Grant County, Columbia County, WA.

Umatilla County, OR: Cities, ZIP Codes & Local Data

Population

79,940

Land area

3,215sq mi

People per sq mi

25

ZIP codes

13

Umatilla County at a glance

Umatilla County is 44% less dense than Oregon as a whole.
Households here earn a median of $67,728 a year, 18% less than the Oregon figure of $83,011.
A typical owner-occupied home is valued at $282,600 (41% below Oregon) and median rent is $997 a month.
The biggest population centers are Hermiston (19,546), Pendleton (16,950) and Umatilla (7,508).

Local data for Umatilla County, OR

Counts from official public data

Housing and community stats

Umatilla County, OR, American Community Survey 2020-2024

Full profile

Median household income

$67,728

Poverty rate

11.8%

Median home value

$282,600

Prices +5.3% in a year

Median rent

$997/mo

Homeownership

67.9%

Bachelor's or higher

18.3%

Median age

36.9

Average commute

19.1 min

Largest reported origins and ancestries: Mexican Americans (20,021), German Americans (9,599), Irish Americans (6,381).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.0%

Sep 2026, -1.1 pts in a year

Average annual pay

$59,613

32,978 jobs, 2025

Income per person

$55,991

BEA, 2024

Federal spending

$727M

FY 2026, $9,081 per person

PPP loans

$123M

1,444 loans, 15,320 jobs reported

Campaign donations

$309K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Umatilla County, OR, workers 16 and older. American Community Survey 5-year estimates

Drove alone76.2%
Carpooled12.5%
Public transit0.3%
Walked3.0%
Bicycle0.1%
Taxi, ride-hailing, motorcycle or other0.9%
Worked from home7.1%

Average one-way commute: 19.1 minutes for people who do not work from home.

Environment and hazard risk

Umatilla County, OR, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: wildfire

Storm events since 1996

650

Most often heavy snow

Flood insurance policies

213

0.7% of homes, county

July high / Jan low

91° / 26°F

15.0 inches of rain a year

Hazards, floods and storm history Check a flood zone 40 historic places

Health statistics

Share of adults in Umatilla County, OR, CDC PLACES estimates

All 40 measures

Obesity

37.7%

U.S. 33.3% +4.4 pts

Diabetes

12.5%

U.S. 12.1% about the same

Smoking

14.6%

U.S. 12.8% +1.8 pts

Uninsured (18-64)

13.6%

U.S. 11.1% +2.5 pts

Cities, towns and ZIP codes in Umatilla County

Population shown

Frequently asked questions

What is the largest city in Umatilla County, OR?: Hermiston is the largest city or town in Umatilla County, with about 19,546 residents.
How many ZIP codes are in Umatilla County?: Umatilla County includes 13 ZIP Code Tabulation Areas, including 97801, 97810, 97813, 97826, 97835.
What is the population of Umatilla County, OR?: About 79,940 people live in Umatilla County, based on American Community Survey 5-year estimates.
What counties border Umatilla County?: Umatilla County borders Benton County, WA, Walla Walla County, WA, Union County, Morrow County, Wallowa County, Grant County, Columbia County, WA.