County · Oregon

Grant County, Oregon

Grant County, Oregon. Grant County had 7,075 residents in 2025 by the Census Bureau's estimate, down 2.2% since 2020, while Oregon grew 0.9%. It holds 10 places (10 cities, villages and boroughs) and 3 census tracts. GEOID 41023.

Residents, July 2025 estimate

7,075

Census Bureau estimate (no margin published)
2020 Census count: 7,233 · ACS 2020-2024: 7,209

Median household income

$59,450

±$4,846 (90% margin)
Oregon: $83,011

Median home value

$229,700

±$21,475 (90% margin)
Oregon: $477,600

Median gross rent

$789

±$68 (90% margin)
Oregon: $1,525

How many people live in Grant County, and is it growing?

The 2020 Census counted 7,233 residents in Grant County. The Census Bureau estimates 7,075 for July 1, 2025, down 2.2% since 2020, while Oregon grew 0.9%. The 2020-2024 American Community Survey puts the population at 7,209 over 4,528 square miles of land.

  • July 2020→2021 +53 (7,293)
  • 2021→2022 −66 (7,227)
  • 2022→2023 +1 (7,228)
  • 2023→2024 −124 (7,104)
  • 2024→2025 −29 (7,075)
Grant County in Oregon. Boundaries: Census Bureau 2024.
Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
MeasureGrant CountyOregonChange since 2015-2019
Total population7,2094,254,293+20
Households3,444±1101,718,422no clear change
Average household size2.04±0.062.42no clear change
Housing units4,157±301,857,992−250

Grant County's population since 2000

From 7,935 in 2000 to 7,075 in 2025: down 10.8%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

  • 2000 Census 7,935
  • 2005 (estimate) 7,389
  • 2010 Census 7,445
  • 2015 (estimate) 7,209
  • 2020 Census 7,233
  • 2025 (estimate) 7,075

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Grant County?

Grant County holds 10 places: 10 cities, villages and boroughs (incorporated places). The largest is John Day with 1,634 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Grant County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.
John Daycity1,6641,609±260$57,891$212,10012.9%100%
Prairie Citycity841615±174$47,311$205,90017.3%100%
Canyon Citytown660900±228$73,750$200,70010.1%100%
Mount VernonGEOID 4150250city548364±167$63,281$143,0009.9%100%
Long Creekcity173200±60$42,614$100,00033.5%100%
SenecaGEOID 4166200city165109±53$39,821$156,30022.0%100%
Dayvilletown132206±73$54,271$220,3009.2%100%
MonumentGEOID 4149750city115185±79$38,419$2,000,000 or more24.3%100%
GraniteGEOID 4130500city3293±55$16,563not published80.6%100%
GreenhornGEOID 4131050city30±13not publishednot published–0%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Grant County?

The median resident of Grant County is 50.4 years old; 17.2% are under 18 and 32.3% are 65 or older. The largest group is non-Hispanic white residents at 86.9%, then non-Hispanic residents of two or more races at 6.9%. 1.7% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
MeasureGrant CountyOregonChange since 2015-2019
Median age50.4±0.440.4−2.5
Under 18 years17.2%±0.6 pts19.9%–
65 years and over32.3%±0.6 pts19.1%–
Hispanic or Latino (any race)4.2%14.7%+0.4 pts
White alone, not Hispanic86.9%±1.6 pts71.4%−4.6 pts
Black or African American alone, not Hispanic0.1%±0.3 pts1.8%–
Asian alone, not Hispanic0.8%±0.3 pts4.4%no clear change
American Indian and Alaska Native alone, not Hispanic0.5%±0.3 pts0.6%–
Native Hawaiian and Other Pacific Islander alone, not Hispanic0.0%±0.6 pts0.4%–
Two or more races, not Hispanic6.9%±1.5 pts6.1%–
Some other race alone, not Hispanic0.6%±0.7 pts0.6%–
Born outside the United States1.7%±0.6 pts9.8%−1.2 pts
Speak a language other than English at home (age 5+)1.9%±0.8 pts15.2%–
Civilian veterans (age 18+)12.7%±1.8 pts7.2%–
With a disability24.3%±2.4 pts15.5%–
No health insurance coverage7.5%±2.2 pts5.9%no clear change
High school graduate or higher (age 25+)91.6%±1.9 pts91.8%–
Bachelor's degree or higher (age 25+)17.7%±2.7 pts36.8%no clear change
Graduate or professional degree (age 25+)4.9%±1.6 pts14.1%–
Moved from another state in the past year1.7%±0.7 pts3.0%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Grant County earn?

Half of Grant County's 3,444 households earn less than $59,450 a year (±$4,846), against $83,011 in Oregon. In 2015-2019 it was $55,027 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.8% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
MeasureGrant CountyOregonChange since 2015-2019
Median household income$59,450±$4,846$83,011no clear change
Mean household income$74,710±$5,801$111,542–
Per capita income$35,597±$2,745$45,612no clear change
People below the poverty line12.8%±2.6 pts11.9%−5.3 pts
Children under 18 below the poverty line16.5%±6.8 pts13.2%no clear change
Households receiving SNAP15.6%±3.7 pts16.0%–
Households with a broadband subscription81.6%±4.0 pts92.4%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Grant County?

Owners occupy 76.7% of Grant County's occupied homes and renters 23.3%. The median owner-occupied home is valued at $229,700 by its owner (±$21,475). The median renter pays $789 a month including utilities, and 32.8% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
MeasureGrant CountyOregonChange since 2015-2019
Median home value (owner-occupied)$229,700±$21,475$477,600+$51,496
Median gross rent$789±$68$1,525no clear change
Renters paying 35% or more of income on rent32.8%±11.5 pts43.1%no clear change
Median monthly owner costs, with a mortgage$1,402±$123$2,157–
Owner-occupied homes76.7%±4.2 pts63.3%+5.6 pts
Housing units4,157±301,857,992−250
Homeowner vacancy rate1.2%±0.9 pts0.7%–
Rental vacancy rate7.1%±6.3 pts4.2%–
Single-family detached homes73.3%±3.6 pts62.7%–
Mobile homes19.3%±3.6 pts7.1%–
Built 2020 or later1.5%±1.4 pts2.1%–
Built 1939 or earlier16.5%±2.8 pts10.7%–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Grant County building?

Builders took permits for 6 new housing units across Grant County in 2025 (6 single-family), 0.8 per 1,000 residents.

  • 2020 7 units
  • 2021 20 units
  • 2022 11 units
  • 2023 20 units
  • 2024 9 units
  • 2025 6 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Grant County get to work?

71.4% of Grant County's workers drive alone and 12.1% work from home. The average trip to work takes 20.1 minutes. The unemployment rate in 2020-2024 averaged 5.2%.

Work and commuting, ACS 2020-2024 5-year estimates
MeasureGrant CountyOregonChange since 2015-2019
In the labor force (age 16+)50.2%±3.4 pts62.3%–
Unemployment rate5.2%±2.2 pts5.4%no clear change
Drove alone to work71.4%±4.3 pts64.5%–
Carpooled8.6%±2.5 pts8.5%–
Public transportation0.0%±1.4 pts2.2%–
Walked7.0%±2.5 pts3.3%–
Worked from home12.1%±3.2 pts19.0%+4.9 pts
Mean travel time to work20.1 min±5.223.0 minno clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Grant County's census tracts?

Grant County is divided into 3 census tracts. Among those with a reliable estimate, median household income runs from $39,889 (Tract 9601) to $70,022 (Tract 9602.02).

Census tracts of Grant County, ACS 2020-2024 5-year estimates; sort by any column
Tract 960141023960100Prairie City (3%)2,0502,006±213$39,889$263,900$71922.7%
Tract 9602.0141023960201Seneca (4%)1,5611,713±281$59,583$194,300$7659.5%
Tract 9602.0241023960202John Day (21%)3,6223,490±277$70,022$227,800$8338.7%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Grant County compare with Oregon's other counties?

Grant County's rank among Oregon's counties with a reliable estimate (1 = highest)
MeasureRank
Population33rd of 36
Growth 2020-202534th of 36
Residents per square mile33rd of 36
Median household income32nd of 36
Median home value33rd of 36
Median gross rent35th of 36
Poverty rate20th of 36
Bachelor's degree or higher33rd of 36
Median age4th of 36

Every county in Oregon

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Grant County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.