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.
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Statewide data for Oklahoma
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.