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Derby, CO vs Four Square Mile, CO

115
Derby
Colorado
VS
-10.1%
128
Four Square Mile
Colorado

Derby is moderately more affordable than Four Square Mile, with a 10.1% lower cost of living index. Derby scores 115 compared to 128 for Four Square Mile, where the US average is 100. This difference means residents of Four Square Mile can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Derby is $1,721/month compared to $1,796/month in Four Square Mile — a 4% difference. Home values follow the same pattern: Derby is more affordable at $317,400 median vs $448,200.

Median household income in Derby is $78,696 compared to $73,318 in Four Square Mile (+7.3%). Derby offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Derby spend roughly 26.2% of their income on rent, less than the 29.4% in Four Square Mile.

Income & Cost

Cost of Living Index
Derby
115
10% cheaper
Four Square Mile
128
Median Household Income
Derby
$78,696
7% higher
Four Square Mile
$73,318

Housing

Median Rent
Derby
$1,721
4% cheaper
Four Square Mile
$1,796
Median Home Value
Derby
$317,400
29% cheaper
Four Square Mile
$448,200
Population
Derby
8,692
Four Square Mile
21,788

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Derby $3.11
Four Square Mile $3.11
US $3.07
🥚
Eggs (grade A, large)
Derby $2.54
Four Square Mile $2.54
US $2.50
🥛
Milk (whole)
Derby $4.09
Four Square Mile $4.09
US $4.03
🍞
Bread (white)
Derby $1.88
Four Square Mile $1.88
US $1.85
🍗
Chicken breast
Derby $4.21
Four Square Mile $4.21
US $4.14
Electricity
Derby $0.18
Four Square Mile $0.18
US $0.19