McClain County, Oklahoma Demographics 2026
McClain County, Oklahoma has a population of 45,273, the 21st most populous county in Oklahoma. The median household income is $84,552 and the median home value is $255,900. The poverty rate is 8.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
McClain County Quick Facts
How McClain County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 43,779 | 45,273 | +3.4% |
| Median household income | $84,778 | $84,552 | -0.3% |
| Median home value | $233,900 | $255,900 | +9.4% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 58 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in McClain County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Newcastle | 13,001 | $93,398 | 3.8% | $271,800 |
| Goldsby | 3,085 | $103,333 | 11.2% | $399,000 |
| Maysville | 1,399 | $60,931 | 19.2% | $152,400 |
| Dibble | 1,045 | $71,471 | 19.5% | $186,100 |
| Washington | 928 | $90,321 | 8.1% | $241,700 |
| Cole | 848 | $90,000 | 11.3% | $235,700 |
| Wayne | 701 | $66,071 | 28.7% | $117,600 |
| Byars | 209 | $41,500 | 45.7% | $90,600 |
| Rosedale | 48 | $48,125 | 41.7% | $106,300 |
Explore Oklahoma Rankings
Population Overview
McClain County is located in Oklahoma with a total population of 45,273. It is the 21st most populous county out of 77 in Oklahoma. The county encompasses 9 Census-designated places.
Age Demographics
The median age in McClain County is 38.6 years. This is 4% higher than the state median of 37.0 years.
Economy, Income & Housing
The median household income in McClain County is $84,552. This is 30% higher than the state median of $65,039. It is also 5% higher than the national median of $80,734. The poverty rate stands at 8.5%. This is 44% lower than the state poverty rate of 15.3%. The unemployment rate is 4.7%. This is 6% lower than the state rate of 5.0%. The median home value is $255,900. Housing costs are 28% higher than the state median of $199,800. The home-value-to-income ratio is 3.0x. 79.3% of occupied housing units are owner-occupied. This homeownership rate is 21% higher than the state average of 65.8%.
Race & Ethnicity
The largest racial or ethnic group in McClain County is White (non-Hispanic), making up 75.4% of the population. Hispanic or Latino residents account for 9.8%. The Black or African American population (1.2%) is well below the state average of 6.8%. The Asian population (0.6%) is well below the state average of 2.4%.
Education
28.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 1% higher than the state rate of 28.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.5%.
Data Sources & Methodology
All figures for McClain County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Oklahoma and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of McClain County, Oklahoma?
McClain County has a population of 45,273, making it the 21st most populous county in Oklahoma.
What is the median income in McClain County?
The median household income in McClain County is $84,552 with a poverty rate of 8.5%.
How many cities are in McClain County, Oklahoma?
McClain County contains 9 Census-designated places.