Arnold, MO
Population 20,884 · Missouri
About Arnold, MO
Arnold is a mid-sized city located in Missouri with a population of 20,884 residents according to the latest US Census Bureau American Community Survey data. The median household income is $75,194 per year, which is 0% above the national median of $75,149. The median age of 39.9 years is close to the US median age of 38.9 years.
Housing Market Overview
The housing market in Arnold features a median home value of $209,700, which is 14% below the national median of $244,900. This positions Arnold in a moderately priced market relative to the rest of the country. Median monthly rent is $1,085, 7% below the national average of $1,163/month. Of the 9,202 total housing units, 80% are owner-occupied (6,794 units) and 20% are renter-occupied (1,739 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in Arnold shows an unemployment rate of 4.2%, which is near the national rate of 3.7%. The poverty rate stands at 7.7%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in Arnold have an average one-way commute time of 27.5 minutes.
Education & Demographics
24.0% of Arnold residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This is in line with national trends in educational attainment. The community's demographic composition includes 0.7% White, 0.2% Hispanic or Latino, 0.0% Black or African American, and 1.5% Asian residents, with 5.6% of the population being foreign-born.
How Arnold Ranks in Missouri
Cost of Living in Arnold, MO
Compared to national averages, Arnold has a median household income of $75,194 (0% above the national median of $75,149). Home values average $209,700, which is 14% below the national median. Monthly rent at $1,085 is 7% below the US average of $1,163. Within Missouri, Arnold's income is 23% above the state average of $61,047, and home values are 39% above the state median of $150,786.
Why Live in Arnold, MO?
Arnold offers a strong local economy with a median household income of $75,194, well above the national average, and affordable housing with a median home value of $209,700, below the US average of $244,900, and rent that’s lower than the national average at $1,085/month. Additionally, the city features a low poverty rate of 7.7%, better than the national average.
Arnold has a population of 20,884 with a median age of 39.9 years. Compare Arnold with other cities to see how it stacks up, or explore all cities in Missouri.
Similar Cities Near Arnold
Cities in Missouri with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Old Jamestown | 21,121 | $107,250 | $230,100 | Compare |
| Rolla | 20,144 | $42,518 | $177,400 | Compare |
| Affton | 20,035 | $77,337 | $200,300 | Compare |
| Sedalia | 21,869 | $50,668 | $136,500 | Compare |
| Ozark | 21,953 | $69,372 | $230,600 | Compare |
| Warrensburg | 19,437 | $57,232 | $216,900 | Compare |
| Republic | 19,233 | $64,364 | $190,300 | Compare |
| Creve Coeur | 18,643 | $119,454 | $566,100 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Missouri
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare Arnold With Other Cities
Frequently Asked Questions about Arnold
What is the population of Arnold, MO?
The population of Arnold, MO is 20,884 according to the latest US Census Bureau American Community Survey estimates. This makes it a mid-sized city in Missouri.
What is the median household income in Arnold?
The median household income in Arnold, MO is $75,194 per year, which is 0% above the national median of $75,149.
What is the median home value in Arnold?
The median home value in Arnold, MO is $209,700, which is 14% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in Arnold?
The median monthly rent in Arnold, MO is $1,085, which is 7% below the national average of $1,163/month.
What is the unemployment rate in Arnold?
The unemployment rate in Arnold, MO is 4.2%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is Arnold, MO a good place to live?
Arnold offers above-average incomes, affordable housing, and growing employment opportunities. With a population of 20,884 and a median age of 39.9, the city appeals to a broad range of residents.
How educated is Arnold, MO?
24.0% of residents in Arnold aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The educational profile reflects the area's industry mix and employment landscape.
What is the cost of living in Arnold?
Key cost-of-living indicators for Arnold, MO: median home value is $209,700 (14% below national), median rent is $1,085/month, and median household income is $75,194. The home-value-to-income ratio is 2.8x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in Arnold?
The poverty rate in Arnold, MO is 7.7%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is Arnold, MO?
Arnold's population is 0.7% White, 0.2% Hispanic or Latino, 0.0% Black or African American, 1.5% Asian, and 0.2% two or more races. 5.6% of residents are foreign-born.