Umatilla County , Oregon

Umatilla County: County in Oregon, United States

Umatilla County locator map
Location of Umatilla County on Oregon map.


Umatilla County is a county located in the U.S. state of Oregon. As of the 2010 census, the population was 75,889 and a population density of 9 people per km². After 9 years in 2019 county had an estimated population of 77,950 inhabitants. Its county seat is Pendleton. The county was created 159 years ago in 1861.


Umatilla County is located at 45°35'31"N 118°44'13"W (45.5919000, -118.7368300). It has 5 neighbors: Grant County, Union County, Morrow County, Wallowa County and Walla Walla County.

UmatillaCountyCircuitCourt image

The largest city of Umatilla County is Hermiston with a population of 17,782. Other cities include, Pendleton population 16,789, Umatilla population 7,321, Milton-Freewater population 7,074 and Stanfield population 2,112. See all Umatilla County cities & populated places.


Umatilla County forecast: Mostly cloudy, with a low around 64. more

UmatillaCountyCircuitCourt image

Umatilla County map

Umatilla County Quick Facts

Population : 77,950 (2019)
Country : United States of America
State : Oregon (United States)
Area : 8369 km2
Water as percent of area : 0.5%
Land as percent of area : 99.5%
Named for : Umatilla River
Altitude : 3,871 feet / 1180 meters
Capital : Pendleton
Establishment : January 01, 1862
Time Zone : America/Los_Angeles
Local time : 01:02:54 (27th July 2021)
Density : 9 Pop. per km² as of 2019
Population growth : 2.64% (2010-2019)
Weather : 64℉ Mostly Cloudy 7-days weather

Umatilla County has 5 neighbours.

  • Pendleton


The population of Umatilla County increased by 2.64% in 9 years.

Year Population % Change Method
2010 75,889 - census
2011 76,804 1.19% estimation process
2012 77,005 0.26% estimation process
2013 76,875 -0.17% estimation process
2014 76,685 -0.25% estimation process
2015 76,467 -0.29% estimation process
2016 76,686 0.29% estimation process
2017 77,120 0.56% estimation process
2018 77,421 0.39% estimation process
2019 77,950 0.68% estimation process

Comitatul Umatilla, Comte d'Umatilla, Comte dUmatilla, Comté d'Umatilla, Comté dUmatilla, Condado de Umatilla, Condado han Umatilla, Contea di Umatilla, Hrabstwo Umatilla, Jumatila, Jumatilla, Okrug Jumatila, Quan Umatilla, Quận Umatilla, Umatilla, Umatilla Comitatus, Umatilla Kun, Umatilla Kūn, Umatilla konderria, Umatilla megye, Yumatila srjan, mqatʿt awmatyla, shhrstan awmatyla awrgn, umitilla ka'unti, you ma di la xian, yumatira jun, Округ Јуматила, Уматілла, Юматила, Юматилла, Յումատիլա շրջան, شهرستان اوماتیلا، اورگن, مقاطعة أوماتيلا, یومیٹیلا کاؤنٹی، اوریگون, উমিটিল্লা কাউন্টি, ユマティラ郡, 尤馬蒂拉縣

Umatilla County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Umatilla County.

City Name Population Title
Hermiston 17,782 City in Oregon, USA
Pendleton 16,789 City in Oregon, USA
Umatilla 7,321 City in Umatilla County, Oregon, United States
Milton-Freewater 7,074 City in Oregon, USA
Stanfield 2,112 City in Oregon, USA
Pilot Rock 1,509 City in Oregon, USA
Athena 1,144 City in Oregon, USA
Mission 1,037
Echo 710 City in Oregon, USA
Weston 651 City in Oregon, USA
Adams 357 City in Oregon, USA
Ukiah 208 City in Oregon, USA
Helix 184 City in Oregon, USA

Oregon Other Counties (more counties)

County Name Population Title
Oregon 4,217,737 State of the United States of America
Multnomah County 812,855 County in Oregon, United States
Portland 654,741 City in Oregon, USA
Washington County 601,592 County in Oregon, United States
Clackamas County 418,187 County in Oregon, United States
Lane County 382,067 County in Oregon, United States
Marion County 347,818 County in Oregon, United States
Jackson County 220,944 County in Oregon, United States
Deschutes County 197,692 County in Oregon, United States
Salem 174,365 City and capital of Oregon, USA
Eugene 172,622 City in Lane County, Oregon, United States
Linn County 129,749 County in Oregon, United States
Terrebonne 117,664 Census-designated place in Deschutes County, Oregon
Douglas County 110,980 County in Oregon, United States
Gresham 109,381 City in Oregon, USA
Hillsboro 109,128 City in Oregon, USA

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