Arnold
A city in Jefferson County, Missouri — population 21,145 as of 2020.
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This Afternoon
87°F
Sunny10% precip
Tonight
64°F
Mostly Clear
Sunday
84°F
Sunny
Sunday Night
63°F
Partly Cloudy
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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