Arnold, MO vs St. Peters, MO

Arnold is moderately more affordable than St. Peters, with a 10.5% lower cost of living index. Arnold scores 83 compared to 93 for St. Peters, where the US average is 100. This difference means residents of St. Peters can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Arnold is $1,085/month compared to $1,291/month in St. Peters — a 16% difference. Home values follow the same pattern: Arnold is more affordable at $209,700 median vs $252,800.

Median household income in Arnold is $75,194 compared to $89,827 in St. Peters (-16.3%). While St. Peters is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Arnold spend roughly 17.3% of their income on rent, more than the 17.2% in St. Peters.