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  4. /Arnold
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Arnold is a city in Jefferson County, Missouri, with a population of approximately 20,858.

Population20,858
Median Home Value$209,700
Median Income$75,194
Area11.53 sq mi

How Arnold Ranks

#1
Safest Citiesin Jefferson County
9.8 total crimes per 1k
#1
Lowest Property Taxesin Jefferson County
2.32%
#1
Best Fiscal Healthin Jefferson County
38 / 100

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Recent

Apr 14Plan CommissionVideoApr 2City CouncilVideoMar 19City CouncilVideoMar 12City CouncilVideoMar 10Plan CommissionVideoMar 5City CouncilVideoFeb 19City CouncilVideoFeb 10Plan CommissionVideo

Recent News

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NewsAPR 09, 2026

Audit Alleges Arnold Officials Misused TDD Funds, Sidestepped Transparency

Audit Alleges Arnold Officials Misused TDD Funds, Sidestepped Transparency The Missouri Times

The Missouri TimesRead article ↗
NewsAPR 07, 2026

State auditor blasts city of Arnold over TDD

State auditor blasts city of Arnold over TDD FOX 2

FOX 2Read article ↗
NewsMAR 14, 2026

Arnold community still recovering from last year's tornado

Arnold community still recovering from last year's tornado Spectrum News

Spectrum NewsRead article ↗

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