Morrow County is one of the
36 counties in the
U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
of
Oregon
Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...
. As of the
2020 census, the population was 12,186.
The
county seat
A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...
is
Heppner.
The county is named for one of its first settlers,
Jackson L. Morrow, who was a member of the state legislature when the county was created. Half of the
Umatilla Chemical Depot, which includes the Umatilla Chemical Agent Disposal Facility, and the
Naval Weapons Systems Training Facility Boardman are located within the county. Morrow County is part of the
Pendleton-
Hermiston, OR,
Micropolitan Statistical Area. It is located on the south side of the
Columbia River
The Columbia River (Upper Chinook language, Upper Chinook: ' or '; Sahaptin language, Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river headwater ...
and is included in the eight-county definition of
Eastern Oregon.
History
Morrow County was created in 1885 from the western portion of
Umatilla County and a small portion of eastern
Wasco County. It is named for
Jackson L. Morrow, a state representative who advocated for the county's formation.
Heppner was designated the temporary county seat at the time the county was created and narrowly defeated
Lexington in the election held in 1887 to determine the permanent county seat.
Geography

Morrow county is located in the eastern portion of Oregon, bounded by the counties of Grant, Gilliam and Umatilla. The county's northern border is defined by the Columbia River. Most of the county is dry and flat, but the southern county contains a section of the Blue Mountains, making it fairly mountainous. The highest point in the county is
Black Mountain in
Umatilla National Forest
The Umatilla National Forest, in the Blue Mountains (Oregon), Blue Mountains of northeast Oregon and southeast Washington (U.S. state), Washington, covers an area of 1.4 million acres (5,700 km2). In descending order of land area the forest ...
at . Rivers flowing from the mountains into the
Columbia River
The Columbia River (Upper Chinook language, Upper Chinook: ' or '; Sahaptin language, Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river headwater ...
.
According to the
United States Census Bureau
The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...
, the county has a total area of , of which is land and (0.8%) is covered by water.
Adjacent counties
*
Gilliam County - west
*
Wheeler County - southwest
*
Grant County Grant County may refer to:
Places
;Australia
* County of Grant, Victoria
;United States
* Grant County, Arkansas
* Grant County, Indiana
* Grant County, Kansas
*Grant County, Kentucky
Grant County is a county located in the northern pa ...
- south
*
Umatilla County - east
*
Benton County, Washington
Benton County is a County (United States), county in the south-central portion of the U.S. state of Washington (state), Washington. As of the 2020 United States census, 2020 census, its population was 206,873. The county seat is Prosser, Wash ...
- north
*
Klickitat County, Washington - northwest
National protected areas
*
Umatilla National Forest
The Umatilla National Forest, in the Blue Mountains (Oregon), Blue Mountains of northeast Oregon and southeast Washington (U.S. state), Washington, covers an area of 1.4 million acres (5,700 km2). In descending order of land area the forest ...
(part)
*
Umatilla National Wildlife Refuge (part)
Demographics
2010 census
As of the
2010 census, there were 11,173 people, 3,916 households, and 2,953 families living in the county.
The population density was . There were 4,442 housing units at an average density of .
The racial makeup of the county was 77.7% white, 1.2% American Indian, 0.9% Asian, 0.5% black or African American, 0.1% Pacific islander, 16.9% from other races, and 2.6% from two or more races. Those of Hispanic or Latino origin made up 31.3% of the population.
In terms of ancestry, 19.5% were
German
German(s) may refer to:
* Germany, the country of the Germans and German things
**Germania (Roman era)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizenship in Germany, see also Ge ...
, 13.1% were
English, 10.7% were
Irish, and 5.0% were
American.
Of the 3,916 households, 37.7% had children under the age of 18 living with them, 59.7% were married couples living together, 9.6% had a female householder with no husband present, 24.6% were non-families, and 19.1% of all households were made up of individuals. The average household size was 2.85 and the average family size was 3.25. The median age was 36.5 years.
The median income for a household in the county was $43,902 and the median income for a family was $49,868. Males had a median income of $38,045 versus $30,173 for females. The per capita income for the county was $20,201. About 12.4% of families and 15.3% of the population were below the
poverty line
The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...
, including 21.7% of those under age 18 and 3.9% of those age 65 or over.
2000 census
As of the
2000 census, there were 10,995 people, 3,776 households, and 2,718 families living in the county. The
population density
Population density (in agriculture: Standing stock (disambiguation), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geog ...
was . There were 4,296 housing units at an average density of . The racial makeup of the county was 76.27%
White
White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...
, 0.14%
Black
Black is a color that results from the absence or complete absorption of visible light. It is an achromatic color, without chroma, like white and grey. It is often used symbolically or figuratively to represent darkness.Eva Heller, ''P ...
or
African American
African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...
, 1.42%
Native American, 0.45%
Asian, 0.08%
Pacific Islander
Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...
, 19.54% from
other races, and 2.14% from two or more races. 24.43% of the population were
Hispanic
The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...
or
Latino of any race. 13.6% were of
German
German(s) may refer to:
* Germany, the country of the Germans and German things
**Germania (Roman era)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizenship in Germany, see also Ge ...
, 12.8%
American, 8.3%
Irish, and 8.0%
English ancestry. 77.3% spoke
English and 22.3%
Spanish
Spanish might refer to:
* Items from or related to Spain:
**Spaniards are a nation and ethnic group indigenous to Spain
**Spanish language, spoken in Spain and many countries in the Americas
**Spanish cuisine
**Spanish history
**Spanish culture
...
as their first language.
There were 3,776 households, out of which 38.91% had children under the age of 18 living with them, 62.60% were
married couples
Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...
living together, 8.87% had a female householder with no husband present, and 22.70% were non-families. 18.13% of all households were made up of individuals, and 7.40% had someone living alone who was 65 years of age or older. The average household size was 2.90 and the average family size was 3.28.
In the county, the population was spread out, with 30.80% under the age of 18, 8.90% from 18 to 24, 27.30% from 25 to 44, 22.40% from 45 to 64, and 10.60% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 106.50 males. For every 100 females age 18 and over, there were 106.10 males.
The median income for a household in the county was $37,525, and the median income for a family was $40,731. Males had a median income of $32,328 versus $22,887 for females. The
per capita income
Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year.
In many countries, per capita income is determined using regular population surveys, such ...
for the county was $15,843. 14.80% of the population and 11.30% of families were below the
poverty line
The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...
. Out of the total population, 21.60% of those under the age of 18 and 10.1% of those 65 and older were living below the poverty line.
Politics
Like all counties in eastern Oregon, the majority of registered voters who are part of a
political party
A political party is an organization that coordinates candidates to compete in a particular area's elections. It is common for the members of a party to hold similar ideas about politics, and parties may promote specific political ideology, ...
in Morrow County are members of the
Republican Party. No Democratic presidential nominee has won a clear majority in Morrow County since
Lyndon Johnson
Lyndon Baines Johnson (; August 27, 1908January 22, 1973), also known as LBJ, was the 36th president of the United States, serving from 1963 to 1969. He became president after assassination of John F. Kennedy, the assassination of John F. Ken ...
in 1964, though
Jimmy Carter
James Earl Carter Jr. (October 1, 1924December 29, 2024) was an American politician and humanitarian who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party (United States), Democratic Party ...
and
Bill Clinton
William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician and lawyer who was the 42nd president of the United States from 1993 to 2001. A member of the Democratic Party (United States), Democratic Party, ...
both won pluralities here in 1976 and 1996, respectively (and it was just 13 votes shy of voting Democratic in 1992). In the
2008 presidential election 61.94% of Morrow County voters voted for Republican
John McCain
John Sidney McCain III (August 29, 1936 – August 25, 2018) was an American statesman and United States Navy, naval officer who represented the Arizona, state of Arizona in United States Congress, Congress for over 35 years, first as ...
, while 34.62% voted for
Democrat Barack Obama
Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
and 3.44% of voters either voted for a
third-party
Third party may refer to:
Business
* Third-party source, a supplier company not owned by the buyer or seller
* Third-party beneficiary, a person who could sue on a contract, despite not being an active party
* Third-party insurance, such as a veh ...
candidate or
wrote in a candidate. These numbers show a slight shift towards the Democratic candidate when compared to the
2004 presidential election, in which 65.9% of Morrow Country voters voted for
George W. Bush
George Walker Bush (born July 6, 1946) is an American politician and businessman who was the 43rd president of the United States from 2001 to 2009. A member of the Bush family and the Republican Party (United States), Republican Party, he i ...
, while 32.8% voted for
John Kerry
John Forbes Kerry (born December 11, 1943) is an American attorney, politician, and diplomat who served as the 68th United States secretary of state from 2013 to 2017 in the Presidency of Barack Obama#Administration, administration of Barac ...
, and 1.4% of voters either voted for a third-party candidate or wrote in a candidate. However, it shifted back in 2012 and 2016, with
Mitt Romney
Willard Mitt Romney (born March 12, 1947) is an American businessman and retired politician. He served as a United States Senate, United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007 ...
and
Donald Trump
Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
both receiving roughly 65% of the vote.
The county is governed through a statutory
board of commission form of government. Commissioners are elected at-large and represent the entire county rather than a specific district.
As of 2025 the commissioners were:
*David Sykes (elected 2022)
*Jeff Wenholz (elected 2022)
*August Peterson (elected 2024)
Economy
The principal industries in the county today include agriculture, food processing, lumber, livestock, and recreation. The Columbia River also provides Morrow County with a number of related jobs. The
Port of Morrow, situated on the
Columbia River
The Columbia River (Upper Chinook language, Upper Chinook: ' or '; Sahaptin language, Sahaptin: ''Nch’i-Wàna'' or ''Nchi wana''; Sinixt dialect'' '') is the largest river in the Pacific Northwest region of North America. The river headwater ...
near the city of Boardman, was established in 1957.
Early cattlemen found an abundance of
rye
Rye (''Secale cereale'') is a grass grown extensively as a grain, a cover crop and a forage crop. It is grown principally in an area from Eastern and Northern Europe into Russia. It is much more tolerant of cold weather and poor soil than o ...
along the creek bottoms of the region and drove their herds into the area to forage on these natural pastures.
Ranching
A ranch (from /Mexican Spanish) is an area of land, including various structures, given primarily to ranching, the practice of raising grazing livestock such as cattle and sheep. It is a subtype of farm. These terms are most often applied to li ...
was the primary economic force in the county for many years. Increased settlement, the enclosure of the free grazing lands and diminished pastures due to
overgrazing
Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature ...
, resulted in the decline of ranching during the 19th century, and farming became predominant. The completion of rail lines into the county in 1883 increased access to markets and encouraged wheat production in the area. The advent of technology for
center pivot irrigation
Center-pivot irrigation (sometimes called central pivot irrigation), also called water-wheel and circle irrigation, is a method of crop irrigation in which equipment rotates around a pivot and crops are watered with sprinklers. A circular area ...
has been a further stimulus to the local economy.
Two
natural gas
Natural gas (also fossil gas, methane gas, and gas) is a naturally occurring compound of gaseous hydrocarbons, primarily methane (95%), small amounts of higher alkanes, and traces of carbon dioxide and nitrogen, hydrogen sulfide and helium ...
-fired plants are located at the Port of Morrow; Coyote Springs I (255-276 MW), owned and operated by Portland General Electric; and Coyote Springs II (241-280 MW; PGE operator) owned by Avista Corp.
In 2022, it was reported that
Amazon
Amazon most often refers to:
* Amazon River, in South America
* Amazon rainforest, a rainforest covering most of the Amazon basin
* Amazon (company), an American multinational technology company
* Amazons, a tribe of female warriors in Greek myth ...
intends to build at least five commercial
data center
A data center is a building, a dedicated space within a building, or a group of buildings used to house computer systems and associated components, such as telecommunications and storage systems.
Since IT operations are crucial for busines ...
s in Morrow County. The company is reportedly pursuing a package of tax breaks to pursue construction of these centers, a project worth almost $12 billion total.
Transportation
Airports
*
Boardman Airport
*
Lexington Airport
Major roads
*
Interstate 84
*
U.S. Route 30
**
U.S. Route 730
*
Oregon Route 74
*
Oregon Route 206
Oregon Route 206 is an Oregon state highway located in the north-central part of the state. It runs from Interstate 84 at Celilo Village to a junction with Oregon Route 74 and Oregon Route 207 in Heppner. Aside from Interstate 84, Oregon R ...
*
Oregon Route 207
Communities
Cities
*
Boardman
*
Heppner (county seat)
*
Ione
*
Irrigon
*
Lexington
Unincorporated communities
*
Cecil
*
Clarke
*
Eightmile
*
Ella
*
Gooseberry
Gooseberry ( or (American and northern British) or (southern British)) is a common name for many species of ''Ribes'' (which also includes Ribes, currants), as well as a large number of plants of similar appearance, and also several unrela ...
*
Lena
*
Morgan
*
Pine City
*
Ruggs
*
Valby
Valby () is one of the 10 official districts of Copenhagen Municipality, Denmark. It is in the southwestern corner of Copenhagen Municipality, and has a mixture of different types of housing. This includes apartment blocks, terraced housing, area ...
Former communities
*
Castle Rock
*
Hardman
See also
*
National Register of Historic Places listings in Morrow County, Oregon
References
External links
Morrow CountyMorrow County ParksMorrow County Historyfrom the
Oregon State Archives
The Archives Division of the Office of the Secretary of State of Oregon, or the Oregon State Archives, is an agency of the Oregon Secretary of State charged with preserving and providing access to government records. The Oregon State Archives is ...
{{Coord, 45.42, -119.57, display=title, type:adm2nd_region:US-OR_source:UScensus1990
1885 establishments in Oregon
Populated places established in 1885
Pendleton–Hermiston Micropolitan Statistical Area