Arnold
Missouri
City👥
Population
20,884
🎂
Median Age
39.9 yrs
💰
Median Income
$75,194
🏠
Median Home Price
$209,700
About Arnold
Tucked along the Meramec River in Jefferson County, Arnold, Missouri sits just 20 miles south of St. Louis — close enough to enjoy big-city amenities, far enough to feel like a genuine community. If you've been eyeing the suburbs as your next home base, Arnold deserves a serious look. It's a city that's easy to…
Tucked along the Meramec River in Jefferson County, Arnold, Missouri sits just 20 miles south of St. Louis — close enough to enjoy big-city amenities, far enough to feel like a genuine community. If you’ve been eyeing the suburbs as your next home base, Arnold deserves a serious look. It’s a city that’s easy to underestimate from a distance but reveals real charm and practicality once you start digging into the details.
A City That Fits Multiple Lifestyles
With a population of around 20,884, Arnold strikes a comfortable middle ground — not so small that you’re driving 45 minutes for a grocery run, and not so large that you feel swallowed by suburban sprawl. The community skews toward established families and working professionals, reflected in a median age of just under 40. Neighborhoods like Fox Run and Windsor Estates offer quiet streets with mature trees and a genuinely neighborly feel, while areas closer to Route 141 and Richardson Road keep you within easy reach of shopping, dining, and services. Whether you’re a young family planting roots or a retiree looking for a low-drama community with solid infrastructure, Arnold tends to accommodate both without feeling split in two directions.
Cost of Living and Housing
One of Arnold’s strongest selling points is affordable homeownership. The median home price hovers around $209,700, which is notably lower than the national median and a significant bargain compared to most St. Louis County suburbs. For that price, you’re typically getting a solid ranch or split-level home with a yard — not a shoebox condo. The median household income of approximately $75,194 means most residents are living comfortably relative to local costs, without the financial strain common in pricier metro areas. Renters will also find reasonable options, particularly in apartment communities along Jeffco Boulevard. Property taxes in Jefferson County are generally lower than in St. Louis County, which is another welcome detail for budget-conscious buyers.
Employment and Economy
Arnold doesn’t have a massive corporate headquarters anchoring its economy, but that’s not really a problem. Many residents commute into St. Louis via Highway 55, which connects smoothly to downtown and major employment corridors. Locally, healthcare is a significant employer — Mercy Hospital Jefferson in nearby Crystal City and SSM Health St. Clare Hospital in Fenton both draw Arnold residents. Retail and service industries along the Arnold Marketplace corridor also support local employment. The Jefferson County economy as a whole has been gradually diversifying, and Arnold’s position near major highway infrastructure makes it attractive for logistics and trade-related work as well.
Lifestyle and Recreation
Outdoor enthusiasts will feel right at home. The Meramec River provides a scenic backdrop and genuine recreational access — fishing, kayaking, and riverside walks are legitimate weekend options, not just brochure promises. Longview Farm Park, just north of the area, offers additional green space and trails. Arnold City Park gives families a solid local option for picnics, playgrounds, and community events throughout the year. The restaurant and retail scene along Jeffco Boulevard is functional rather than flashy, offering familiar chains alongside a handful of locally owned spots. For more adventurous dining or evening entertainment, St. Louis is a comfortable 25-minute drive without heavy traffic.
The Bottom Line
Arnold, Missouri is the kind of place that rewards people who prioritize stability, affordability, and community over trendiness. It’s not a flashy destination, and it doesn’t pretend to be. What it offers instead is genuine value — reasonable home prices, a manageable commute to a major metro, solid schools through the Fox C-6 School District, and a community that feels grounded rather than transient. If those things matter to you, Arnold is well worth a weekend visit before you make your final decision.
🏠 Housing & Cost of Living
Median Home Price
$209,700
Median Rent
$1,085
Homeownership Rate
79.6%
💼 Employment & Economy
Unemployment Rate
4.2%
Arnold Resources
Explore Other Missouri Cities
Quick Facts
- Population
- 20,884
- Diversity Index
- 9.1
- Land Area
- 11.5 sq mi
- Population Density
- 1,812/sq mi
Not sure if Arnold is right for you?
Tell Relo Kate about your situation and she'll help you decide.
Ask Relo Kate →National Relocation News
View all articles →