Dewey County, Oklahoma Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 71st-largest in Oklahoma
The population of Dewey County, Oklahoma is 4,433 as of the 2023 American Community Survey, making it the 71st-largest county in Oklahoma. The median household income is $60,550, the median home value is $118,200, and the median age is 38.0.
The population of Dewey County has declined 11.2% since 2010 (4,809 → 4,268), a -0.85% annualized rate.
4,433
Population
-0.85%
Annual growth
4
People / sq mi
$60,550
Median Income
$118,200
Median Home Value
Dewey County covers 1,000 sq mi of land at 4.4 people per square mile.
About Dewey County, OK
Dewey County stands apart on settlement density — it is among the most sparsely settled of US counties, at roughly 4 people per square mile. With 4,433 residents, Dewey County is a county in Oklahoma.
Household earnings are middling, with a median of $60,550 — below the US median of $78,538. The poverty rate is 10.2%, below the national 12.4%. Housing is relatively affordable, with a median home value of $118,200, with typical rent around $900.
19.8% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Just 5.2% of workers are home-based, below the national 14.0%, and the average commute runs about 19 minutes each way.
Dewey County Population History (2010-2024)
The county of Dewey County had a population of 4,809 in 2010 and 4,268 in 2024, a -11.2% growth over 14 years. The peak was 4,986 in 2015. Average annual growth rate: -0.82%.
4,268
Population (2024)
4,809
Population (2010)
4,986
Peak (2015)
-0.82%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 4,809 |
| 2011 | 4,785 |
| 2012 | 4,815 |
| 2013 | 4,855 |
| 2014 | 4,965 |
| 2015 | 4,986 |
| 2016 | 4,895 |
| 2017 | 4,891 |
| 2018 | 4,930 |
| 2019 | 4,896 |
| 2020 | 4,473 |
| 2021 | 4,418 |
| 2022 | 4,387 |
| 2023 | 4,253 |
| 2024 | 4,268 |
Race & Ethnicity
| White | 83.4% |
| Black or African American | 0.0% |
| Asian | 0.2% |
| Hispanic or Latino (any race) | 11.1% |
| Two or More Races | 0.0% |
Age & Sex
38.0
Median Age
50.3%
Female
49.7%
Male
19.0%
Age 65+
Age Distribution
Children (under 15): 23.1% · Seniors (65+): 19.0%
Income & Poverty
| Median household income | $60,550$-3,053 vs state |
| Mean household income | $76,946 |
| Per-capita income | $30,044 |
| Poverty rate | 10.2%-0.9% vs state |
| Unemployment rate | 2.6% |
| Employment-to-population | 54.9% |
Top Industries by Employment
The largest employment sector in Dewey County is agriculture, accounting for 19.0% of workers.
How residents commute
0.0%
Drive alone
5.8%
Carpool
78.7%
Public transit
5.2%
Work from home
19.1 min
Avg commute
Housing
$118,200$-67,700 vs state
Median home value
$900
Median rent
74.7%
Homeownership rate
2,195
Total housing units
72.7%
Occupied
27.3%
Vacant
25.3%
Renter-occupied
Social & access
86.5%
With health insurance
92.4%
With broadband internet
23.9%
Foreign-born
5.4%
Veterans (18+)
18.6%
With a disability
96.7%
Speak language other than English at home
Education
92.6%
High School+
19.8%
Bachelor's+
Largest cities in Oklahoma
Other counties in Oklahoma
Part of Oklahoma
Metro areas in Oklahoma
County rankings
Frequently Asked Questions
Dewey County, Oklahoma has a population of 4,433 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 71st-largest county in Oklahoma. Population density is 4 people per square mile.
The population of Dewey County has declined 11.2% since 2010 (4,809 → 4,268), a -0.85% annualized rate.
The median household income in Dewey County, Oklahoma is $60,550, with mean (average) household income of $76,946 and per-capita income of $30,044. 10.2% of residents live below the federal poverty level.
In Dewey County, the largest racial and ethnic groups are White (83.4%), Hispanic or Latino (11.1%), Asian (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Dewey County, Oklahoma is 38.0 years. Residents are 50.3% female and 49.7% male.
The median home value in Dewey County is $118,200 and median monthly rent is $900. 74.7% of occupied housing units are owner-occupied. The county has 2,195 total housing units, 27.3% of which are vacant.
The largest employment sector in Dewey County, Oklahoma is agriculture, forestry, fishing, and mining, employing 19.0% of workers. The unemployment rate is 2.6%.
Oklahoma City is among the largest cities associated with Dewey County, Oklahoma, with a population of 688,693.
Dewey County, OK Climate
Dewey County, OK has an average annual temperature of 14.8°C (59°F) and receives about 664 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
14.8°C
Avg Temp
664
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 1° / 35° | 17 mm |
| February | 5° / 40° | 27 mm |
| March | 9° / 49° | 47 mm |
| April | 14° / 58° | 59 mm |
| May | 20° / 67° | 116 mm |
| June | 25° / 76° | 92 mm |
| July | 28° / 82° | 54 mm |
| August | 27° / 80° | 65 mm |
| September | 22° / 72° | 74 mm |
| October | 16° / 60° | 52 mm |
| November | 8° / 47° | 43 mm |
| December | 3° / 37° | 18 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Dewey County, OK
The most comfortable months to visit Dewey County, OK are typically September, May and October, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 35°C high). The coldest is January (near -5°C low). May is usually the wettest month.
Where to stay near Dewey County
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Population, race, income, age, and trends across Oklahoma
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.