Arnold
A city in Jefferson County, Missouri — population 21,145 as of 2020.
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Tonight
67°F
Chance Rain Showers then Patchy Fog29% precip
Saturday
92°F
Patchy Fog then Sunny8% precip
Saturday Night
68°F
Partly Cloudy11% precip
Sunday
91°F
Mostly Sunny then Slight Chance Showers And Thunderstorms20% precip
In and around Arnold
See & do
- 24 Hour Fitness
- Arnold Athletic Association
- Arnold City Park
- Arnold Historical Society
- Arnold Library At Astra Way
Eat, drink & stay
+130 more on the mapShops & services
+265 more on the mapMusicians & bands near Arnold →
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Arnold by the numbers
Population
21,145Population figure, 2020
Households & income
- Area
- 11.52 sq mi (29.85 km²), 0 sq mi water
- Median age
- 39.7
- Households
- 8,394
- Persons per household
- 2.5
- Median household income
- $78,370
- Median house value
- $220,000
Municipal office
- Office
- FINANCE DIRECTOR
- Address
- 2101 JEFFCO BLVD, ARNOLD, MO 63010